{"id":54733,"date":"2025-11-14T09:44:21","date_gmt":"2025-11-14T01:44:21","guid":{"rendered":"https:\/\/www.fst.um.edu.mo\/personal\/?page_id=54733"},"modified":"2026-05-08T18:39:41","modified_gmt":"2026-05-08T10:39:41","slug":"ryanlhu","status":"publish","type":"page","link":"https:\/\/www.fst.um.edu.mo\/personal\/ryanlhu\/","title":{"rendered":"Leong Hou U"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"54733\" class=\"elementor elementor-54733\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-58dabf7f elementor-section-full_width elementor-section-height-default elementor-section-height-default\" data-id=\"58dabf7f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-378299c1\" data-id=\"378299c1\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-47121fa6 nav-align-right elementor-widget elementor-widget-eael-one-page-nav\" data-id=\"47121fa6\" data-element_type=\"widget\" data-settings=\"{&quot;heading_alignment&quot;:&quot;right&quot;}\" data-widget_type=\"eael-one-page-nav.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t        <div class=\"eael-one-page-nav-container\">\n            <ul class=\"eael-one-page-nav\" id=\"eael-one-page-nav-47121fa6\" data-section-id=\"eael-one-page-nav-47121fa6\" data-top-offset=\"0\" data-scroll-speed=\"700\" data-scroll-wheel=\"\" data-scroll-touch=\"\" data-scroll-keys=\"\" data-section-ids=\"[&quot;0001&quot;,&quot;0002&quot;,&quot;0003&quot;,&quot;0004&quot;,&quot;0005&quot;]\">\n                <li class=\"eael-one-page-nav-item\"><a href=\"#\" aria-label=\"Basic information\" data-row-id=\"0001\"><span class=\"eael-nav-dot-wrap\"><i class=\"eael-nav-dot fas fa-circle\"><\/i><\/span><\/a><\/li><li class=\"eael-one-page-nav-item\"><a href=\"#\" aria-label=\"Selected Publications\" data-row-id=\"0002\"><span class=\"eael-nav-dot-wrap\"><i class=\"eael-nav-dot fas fa-circle\"><\/i><\/span><\/a><\/li><li class=\"eael-one-page-nav-item\"><a href=\"#\" aria-label=\"Teaching\" data-row-id=\"0003\"><span class=\"eael-nav-dot-wrap\"><i class=\"eael-nav-dot fas fa-circle\"><\/i><\/span><\/a><\/li><li class=\"eael-one-page-nav-item\"><a href=\"#\" aria-label=\"Technical Activities\" data-row-id=\"0004\"><span class=\"eael-nav-dot-wrap\"><i class=\"eael-nav-dot fas fa-circle\"><\/i><\/span><\/a><\/li><li class=\"eael-one-page-nav-item\"><a href=\"#\" aria-label=\"Supervisions\" data-row-id=\"0005\"><span class=\"eael-nav-dot-wrap\"><i class=\"eael-nav-dot fas fa-circle\"><\/i><\/span><\/a><\/li>            <\/ul>\n        <\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f87b9c6 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"7f87b9c6\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-6c5880f7 elementor-section-height-min-height elementor-section-stretched elementor-section-items-top elementor-section-boxed elementor-section-height-default\" data-id=\"6c5880f7\" data-element_type=\"section\" id=\"0001\" data-settings=\"{&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-2c9aa890\" data-id=\"2c9aa890\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-76cfd93a elementor-widget elementor-widget-spacer\" data-id=\"76cfd93a\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33a44eb0 premium-atext__paused-yes premium-atext__switch elementor-invisible elementor-widget elementor-widget-premium-addon-fancy-text\" data-id=\"33a44eb0\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;fadeInRight&quot;,&quot;_animation_delay&quot;:&quot;100&quot;}\" data-widget_type=\"premium-addon-fancy-text.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"premium-atext__wrapper premium-atext__slide pause\" data-start-effect=\"page_load\" data-settings=\"{&quot;effect&quot;:&quot;slide&quot;,&quot;speed&quot;:200,&quot;showItems&quot;:1,&quot;pause&quot;:3000,&quot;mousePause&quot;:true,&quot;loading&quot;:false,&quot;style&quot;:&quot;switch&quot;}\">\n\n\t\t\t<h3 class=\"premium-atext__headline\">\n\t\t\t\t\t\t\t<span class=\"premium-prefix-text\">\n\t\t\t\t\t<span class=\"premium-atext__span-align\">This is   <\/span>\n\t\t\t\t<\/span>\n\t\t\t\n\t\t\t\t\t\t<div class=\"premium-atext__text\" style='display: inline-block; text-align: center'>\n\t\t\t\t<ul class=\"premium-atext__items-wrapper\">\n\t\t\t\t\t\t\t\t\t<li class=\"premium-fancy-list-items premium-fancy-item-visible\">\n\t\t\t\t\t\t\tLeong Hou U\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li class=\"premium-fancy-list-items premium-fancy-item-visible\">\n\t\t\t\t\t\t\t    \u4f59\u4eae\u8c6a    \t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t\t<li class=\"premium-fancy-list-items premium-fancy-item-visible\">\n\t\t\t\t\t\t\t    Ryan    \t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t<\/ul>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t\t<span class=\"premium-suffix-text\">\n\t\t\t\t\t<span class=\"premium-atext__span-align\">from UM<\/span>\n\t\t\t\t<\/span>\n\t\t\t\n\t\t\t\n\t\t\t<\/h3>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-inner-section elementor-element elementor-element-4d7b7e7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4d7b7e7\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-11aa50a5\" data-id=\"11aa50a5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1e2a1a6e elementor-widget-divider--view-line_text elementor-widget-divider--element-align-right elementor-widget elementor-widget-divider\" data-id=\"1e2a1a6e\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;300&quot;}\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t\t<span class=\"elementor-divider__text elementor-divider__element\">\n\t\t\t\tAssociate Professor\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-365f54ea elementor-widget-divider--view-line_text elementor-widget-divider--element-align-right elementor-widget elementor-widget-divider\" data-id=\"365f54ea\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;300&quot;}\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t\t<span class=\"elementor-divider__text elementor-divider__element\">\n\t\t\t\tState Key Laboratory of Internet of Things for Smart City\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-15887542 elementor-widget-divider--view-line_text elementor-widget-divider--element-align-right elementor-widget elementor-widget-divider\" data-id=\"15887542\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;300&quot;}\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t\t<span class=\"elementor-divider__text elementor-divider__element\">\n\t\t\t\tDepartment of Computer and Information Science\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d55911e elementor-widget-divider--view-line_text elementor-widget-divider--element-align-right elementor-widget elementor-widget-divider\" data-id=\"6d55911e\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;300&quot;}\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t\t<span class=\"elementor-divider__text elementor-divider__element\">\n\t\t\t\tFaculty of Science and Technology\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-549aea6a elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"549aea6a\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7367b77c elementor-widget elementor-widget-heading\" data-id=\"7367b77c\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\"><span>Other Positions and Services<\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-41415bda elementor-widget elementor-widget-text-editor\" data-id=\"41415bda\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><span style=\"font-size: 10pt;font-family: verdana, geneva, sans-serif\">Head of <a href=\"https:\/\/cds.ici.um.edu.mo\/\">Centre for Data Science<\/a>, <a href=\"http:\/\/ici.um.edu.mo\/\">Institute of Collaborative Innovation<\/a><\/span><\/li><li><span style=\"font-size: 10pt;font-family: verdana, geneva, sans-serif\">Final Year Project coordinator, Department of Computer and Information Science<\/span><\/li><li><span style=\"font-family: verdana, geneva, sans-serif\"><span style=\"font-size: 13.3333px\">Director, Asia Hong Kong and Macao Site Regional Site, ICPC International Collegiate Programming Contest<\/span><\/span><\/li><li><span style=\"font-family: verdana, geneva, sans-serif\"><span style=\"font-size: 13.3333px\">Member, \u6fb3\u9580\u516c\u5171\u884c\u653f\u6539\u9769\u8aee\u8a62\u59d4\u54e1\u6703<\/span><\/span><\/li><li><span style=\"font-family: verdana, geneva, sans-serif;font-size: 10pt\">Member 2020-2026, <\/span><a style=\"font-family: verdana, geneva, sans-serif;font-size: 10pt;background-color: #ffffff\" href=\"https:\/\/www.cpu.gov.mo\/zh-hant\/\">\u6fb3\u9580\u57ce\u5e02\u898f\u5283\u59d4\u54e1\u6703<\/a><\/li><li><span style=\"font-size: 10pt;font-family: verdana, geneva, sans-serif\">Member, \u6fb3\u9580\u4fdd\u5b89\u90e8\u968a\u9ad8\u7b49\u5b78\u6821\u53ec\u958b\u5b78\u8853\u53ca\u6559\u5b78\u59d4\u54e1\u6703<\/span><\/li><\/ul><div><p><span style=\"font-family: verdana, geneva, sans-serif\"><span style=\"font-size: 13.3333px\">I am actively seeking individuals with a strong passion for Large Scale Data Processing, Graph Learning, and Reinforcement Learning to join my research team. If you are a research assistant, PhD student, or postdoc who is enthusiastic about these fields and eager to contribute to cutting-edge research, I encourage you to reach out. We offer an exciting research environment in our State Key Laboratory and Super Intelligent Computing Center.<\/span><\/span><\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-679a4fd elementor-widget elementor-widget-heading\" data-id=\"679a4fd\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">News<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-907a84c elementor-widget elementor-widget-text-editor\" data-id=\"907a84c\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li><span style=\"font-size: 13.3333px;font-family: verdana, geneva, sans-serif\">(May 2026) 2 papers accepted by ICML26, 1 paper accepted by TITS<\/span><\/li><li><span style=\"font-family: verdana, geneva, sans-serif\"><span style=\"font-size: 13.3333px\">(Jan 2026) 2 papers accepted by ICDE26<\/span><\/span><\/li><li><span style=\"font-family: verdana, geneva, sans-serif\"><span style=\"font-size: 13.3333px\">(Nov 2025) 6 papers (4 orals, 2 posters) accepted by AAAI26<\/span><\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-64657caa elementor-widget elementor-widget-heading\" data-id=\"64657caa\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">Academic Qualification<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-57206b70 elementor-widget elementor-widget-text-editor\" data-id=\"57206b70\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-size: 10pt;font-family: verdana, geneva, sans-serif\">\u221e Ph.D. in Computer Science,\u00a0The University of Hong Kong, Hong Kong (2010)<br \/><\/span><span style=\"font-family: verdana, geneva, sans-serif;font-size: 10pt\">\u221e M.Sc. in E-Commerce Technology, <\/span><span style=\"font-family: verdana, geneva, sans-serif;font-size: 10pt\">University of Macau, Macau (2005)<br \/><\/span><span style=\"font-family: verdana, geneva, sans-serif;font-size: 10pt\">\u221e B.Sc. in Computer Science and Information Engineering,\u00a0<\/span><span style=\"font-family: verdana, geneva, sans-serif;font-size: 10pt\">National Chi Nan University, Taiwan (2003)<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-78e9a000\" data-id=\"78e9a000\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f697767 elementor-widget elementor-widget-image\" data-id=\"f697767\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"640\" height=\"960\" src=\"https:\/\/www.fst.um.edu.mo\/personal\/wp-content\/uploads\/2025\/11\/ChatGPT-Image-Mar-31-2025-07_29_41-PM-683x1024.png\" class=\"attachment-large size-large wp-image-54742\" alt=\"\" srcset=\"https:\/\/www.fst.um.edu.mo\/personal\/wp-content\/uploads\/2025\/11\/ChatGPT-Image-Mar-31-2025-07_29_41-PM-683x1024.png 683w, https:\/\/www.fst.um.edu.mo\/personal\/wp-content\/uploads\/2025\/11\/ChatGPT-Image-Mar-31-2025-07_29_41-PM-200x300.png 200w, https:\/\/www.fst.um.edu.mo\/personal\/wp-content\/uploads\/2025\/11\/ChatGPT-Image-Mar-31-2025-07_29_41-PM-768x1152.png 768w, https:\/\/www.fst.um.edu.mo\/personal\/wp-content\/uploads\/2025\/11\/ChatGPT-Image-Mar-31-2025-07_29_41-PM.png 1024w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1903bea4 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"1903bea4\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1de18a0d elementor-widget elementor-widget-heading\" data-id=\"1de18a0d\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">Research Interests<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-19635d33 elementor-widget elementor-widget-text-editor\" data-id=\"19635d33\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-size: 10pt;font-family: verdana, geneva, sans-serif\">Large-Scale Spatial and Spatio-Temporal Data | Large-Scale Graph Data Processing | Large-Scale Graph Neural Networks | Large-Scale Data Visualization Techniques | Crowdsourcing |\u00a0 Reinforcement Learning | Information Retrieval | Optimization Problems<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-29da28be elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"29da28be\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-30dd895f elementor-widget elementor-widget-heading\" data-id=\"30dd895f\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-large\">Contact Detail<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bcdd91b elementor-widget elementor-widget-text-editor\" data-id=\"bcdd91b\" data-element_type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;none&quot;,&quot;_animation_delay&quot;:&quot;500&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-size: 10pt;font-family: verdana, geneva, sans-serif\">E11-4021<br \/>Faculty of Science and Technology<\/span><br \/><span style=\"font-size: 10pt;font-family: verdana, geneva, sans-serif\">University of Macau<\/span><br \/><span style=\"font-size: 10pt;font-family: verdana, geneva, sans-serif\">Telephone: (853) 8822-4493<\/span><br \/><span style=\"font-size: 10pt;font-family: verdana, geneva, sans-serif\">Email: ryanlhu [at] um [dot] edu [dot] mo<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-622128e8 elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"622128e8\" data-element_type=\"section\" id=\"0002\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3bb1d913\" data-id=\"3bb1d913\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7143d6e4 elementor-widget elementor-widget-spacer\" data-id=\"7143d6e4\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ce21c4b elementor-widget elementor-widget-heading\" data-id=\"ce21c4b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Selected Publications<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46d69a8c elementor-widget elementor-widget-text-editor\" data-id=\"46d69a8c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4>Journal Articles<\/h4>\n<ol>\n<li>Shunran Zhang, Huiyun Li, Zhengmin JIANG, Ming Sang, ,Jindai Liu, Leong Hou U: AutoLegal: Towards Universal Traffic Compliance for Autonomous Vehicles Through Knowledge-Enhanced Language Models and Signal Temporal Logic. IEEE Transactions on Intelligent Transportation Systems (accepted)<\/li>\n<li>Yuanyuan Yao, Yuhan Shi, Lu Chen, Ziquan Fang, Yunjun Gao, Leong Hou U, Yushuai Li, Tianyi Li: Moon: A Modality Conversion-based Efficient Multivariate Time Series Anomaly Detection. TKDE 2025 (accepted)<\/li>\n<li>Wentao Zhang, Jingyuan Wang, Yifan Yang, Leong Hou U: VecCity: A Taxonomy-guided Library for Map Entity Representation Learning [Experiment, Analysis &amp; Benchmark]. Proc. VLDB Endow. 18(8): 2575-2588 (2025)<\/li>\n<li>Shunran Zhang, Zhengmin Jiang, Ming Sang, Yunjie Han, Huiyun Li, Leong Hou U: A Comprehensive Survey on Driving Compliance Assessment Methodologies for Autonomous Vehicles. IEEE Intell. Transp. Syst. Mag. 17(4): 56-82 (2025)<\/li>\n<li>Xin Wang, Zirui Chen, Haofen Wang, Leong Hou U, Zhao Li, Wenbin Guo: Large Language Model Enhanced Knowledge Representation Learning: A Survey. Data Sci. Eng. 10(3): 315-338 (2025)<\/li>\n<li>Jiawei Lin, Xuekai Wei, Weizhi Xian, Jielu Yan, Leong Hou U, Yong Feng, Zhaowei Shang, Mingliang Zhou: Continuous reinforcement learning via advantage value difference reward shaping: A proximal policy optimization perspective. Eng. Appl. Artif. Intell. 151: 110676 (2025)<\/li>\n<li>Zhang, Liqing and U, Leong Hou and Ni, Shaoquan and Chen, Dingjun and Li, Zhenning and Wang, Wenxian and Xian, Weizhi: City Metro Network Expansion Based on Multi-Objective Reinforcement Learning. Transportation Research Part C: Emerging Technologies (accepted)<\/li>\n<li>Tsz Nam Chan, Rui Zang, Bojian Zhu, Leong Hou U, Dingming Wu, Jianliang Xu: LION: Fast and High-Resolution Network Kernel Density Visualization. Proc. VLDB Endow. 17(6): 1255-1268 (2024)<\/li>\n<li>Wei Liu, Leong Hou U, Shangsong Liang, Huaijie Zhu, Jianxing Yu, Yubao liu, Jian YinAuthors Info &amp; Claims: VAE*: A Novel Variational Autoencoder via Revisiting Positive and Negative Samples for Top-N Recommendation.&nbsp;ACM Transactions on Knowledge Discovery from Data 2024<\/li>\n<li>Ming Yang, Kaiyan Zhao, Yiming Wang, Renzhi Dong, Yali Du, Furui Liu, Mingliang Zhou, Leong Hou U: Team-wise effective communication in multi-agent reinforcement learning. Auton. Agents Multi Agent Syst. 38(2): 36 (2024)<\/li>\n<li>Liqing Zhang, Leong Hou U, Mingliang Zhou, Feiyu Yang: Elastic Tracking Operation Method for High-Speed Railway Using Deep Reinforcement Learning. IEEE Trans. Consumer Electron. 70(1): 3384-3391 (2024)<\/li>\n<li>Jian Zeng, Leong Hou U, Xiao Yan, Yan Li, Mingji Han, Bo Tang: Extracting Top- Frequent and Diversified Patterns in Knowledge Graphs. IEEE Trans. Knowl. Data Eng. 36(2): 608-626 (2024)<\/li>\n<li>Siyuan Wu, Leong Hou U, Panagiotis Karras: k-Best Egalitarian Stable Marriages for Task Assignment. Proc. VLDB Endow. 16(11): 3240-3252 (2023)<\/li>\n<li>Ming Yang, Yiming Wang, Yang Yu, Mingliang Zhou, Leong Hou U: MixLight: Mixed-Agent Cooperative Reinforcement Learning for Traffic Light Control. IEEE Trans. Ind. Informatics 20(2): 2653-2661 (2024)<\/li>\n<li>Hanlin Li, Xiaowei Wu, Leong Hou U, Kun Pang Kou: Near-Optimal Scheduling for Crowdsourced Transit System With Skip-Stop Tactic. IEEE Trans. Knowl. Data Eng. 35(11): 11668-11680 (2023)<\/li>\n<li>Tsz Nam Chan, Leong Hou U, Reynold Cheng, Man Lung Yiu, Shivansh Mittal: Efficient Algorithms for Kernel Aggregation Queries. IEEE Trans. Knowl. Data Eng. 34(6): 2726-2739 (2022)<\/li>\n<li>Liqing Zhang, Leong Hou U, Mingliang Zhou, Zhenning Li: An Intelligent Train Operation Method Based on Event-Driven Deep Reinforcement Learning. IEEE Trans. Ind. Informatics 18(10): 6973-6980 (2022)<\/li>\n<li>Tsz Nam Chan, Leong Hou U, Yun Peng, Byron Choi, Jianliang Xu: Fast Network K-function-based Spatial Analysis. Proc. VLDB Endow. 15(11): 2853-2866 (2022)<\/li>\n<li>Tsz Nam Chan, Pak Lon Ip, Kaiyan Zhao, Leong Hou U, Byron Choi, Jianliang Xu: LIBKDV: A Versatile Kernel Density Visualization Library for Geospatial Analytics. Proc. VLDB Endow. 15(12): 3606-3609 (2022)<\/li>\n<li>Binbin Zhang, Hao Wang, Leong Hou U: Dynamic top-k influence maximization in social networks. GeoInformatica 26(2): 323-346 (2022)<\/li>\n<li><span style=\"letter-spacing: 0.2px\">Tsz Nam Chan, Pak Lon Ip, Leong Hou U, Byron Choi, Jianliang Xu. SWS: A Complexity-Optimized Solution for Spatial-Temporal Kernel Density Visualization. Proceedings of the VLDB Endowment (PVLDB), 2022.&nbsp;<\/span>(<span style=\"letter-spacing: 0.2px\"><a href=\"https:\/\/github.com\/libkdv\/libkdv\" target=\"_blank\" rel=\"noopener\">project page<\/a>)<\/span><\/li>\n<li>Tsz Nam Chan, Pak Lon Ip, Leong Hou U, Byron Choi, Jianliang Xu. SAFE: A Share-and-Aggregate Bandwidth Exploration Framework for Kernel Density Visualization. Proceedings of the VLDB Endowment (PVLDB), 2022. (<span style=\"letter-spacing: 0.2px\"><a href=\"https:\/\/github.com\/libkdv\/libkdv\" target=\"_blank\" rel=\"noopener\">project page<\/a>)<\/span><\/li>\n<li>Tsz Nam Chan, Pak Lon Ip, Leong Hou U, Weng Hou Tong, Shivansh Mittal, Ye Li, Reynold Cheng: KDV-Explorer: A Near Real-Time Kernel Density Visualization System for Spatial Analysis. Proc. VLDB Endow. 14(12): 2655-2658 (2021) (<a href=\"https:\/\/www.comp.hkbu.edu.hk\/~edisonchan\/system\/KDV-Explorer.html\">project page<\/a>)<\/li>\n<li>Tsz Nam Chan, Zhe Li, Leong Hou U, Jianliang Xu, Reynold Cheng: Fast Augmentation Algorithms for Network Kernel Density Visualization. Proc. VLDB Endow. 14(9): 1503-1516 (2021)<\/li>\n<li>Tsz Nam Chan, Man Lung Yiu, Leong Hou U: The Power of Bounds: Answering Approximate Earth Mover&#8217;s Distance with Parametric Bounds. IEEE Trans. Knowl. Data Eng. 33(2): 768-781 (2021)<\/li>\n<li>Yan Li, Hao Wang, Ngai Meng Kou, Leong Hou U &amp; Zhiguo Gong: Crowdsourced top-k queries by pairwise preference judgments with confidence and budget control. The VLDB Journal (2021)<\/li>\n<li>Yiyang Yang, Sucheng Deng, Juan Lu, Yuhong Li, Zhiguo Gong, Leong Hou U, Zhifeng Hao: GraphLSHC: Towards large scale spectral hypergraph clustering. Inf. Sci. 544: 117-134 (2021)<\/li>\n<li>Huaizhong Lin, Shanshan Wu, Leong Hou U, Ngai Meng Kou, Yunjun Gao, Dongming Lu: Finding the hottest item in data streams. Inf. Sci. 430: 314-330 (2018)<\/li>\n<li>Leong Hou U, Junjie Zhang, Kyriakos Mouratidis, Ye Li: Continuous Top-k Monitoring on Document Streams. IEEE Trans. Knowl. Data Eng. 29(5): 991-1003 (2017) [<a href=\"http:\/\/ieeexplore.ieee.org\/document\/7831369\/\" target=\"_blank\" rel=\"noopener noreferrer\">link<\/a>]<\/li>\n<li>Yuhong Li, Leong Hou U, Man Lung Yiu, Zhiguo Gong: Efficient discovery of longest-lasting correlation in sequence databases. VLDB J. 25(6): 767-790 (2016) [<a href=\"https:\/\/link.springer.com\/article\/10.1007\/s00778-016-0432-7\" target=\"_blank\" rel=\"noopener noreferrer\">link<\/a>]<\/li>\n<li>Bailong Liao, Leong Hou U, Man Lung Yiu, Zhiguo Gong: Beyond Millisecond Latency kNN Search on Commodity Machine. IEEE Trans. Knowl. Data Eng. 27(10): 2618-2631 (2015) [<a href=\"https:\/\/doi.org\/10.1109\/TKDE.2015.2426702\" target=\"_blank\" rel=\"noopener noreferrer\">link<\/a>]<\/li>\n<li>Ngai Meng Kou, Leong Hou U, Yiyang Yang, and Zhiguo Gong: Travel Topic Analysis: A Mutually Reinforcing Method for Geo-tagged Photos, Geoinformatica, to appear. [<a href=\"http:\/\/degroup.cis.umac.mo\/~ryan\/publications\/traveltopic_geoinfromatica.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">pdf<\/a>]<\/li>\n<li>Shen Ge, Leong Hou U, Nikos Mamoulis, David W. Cheung: Dominance relationship analysis with budget constraints. Knowl. Inf. Syst. (KAIS) 42(2):409-440 (2015)<\/li>\n<li>Yiyang Yang, Zhiguo Gong, Leong Hou U: Identifying Points of Interest using heterogenous Features. ACM TIST (TIST) 5(4):68 (2014). [<a href=\"http:\/\/tist.acm.org\/papers\/TIST-2013-05-0057.R3.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">pdf<\/a>]<\/li>\n<li>Leong Hou U, Hong Jun Zhao, Man Lung Yiu, Yuhong Li, Zhiguo Gong: Towards Online Shortest Path Computation. IEEE Trans. Knowl. Data Eng. (TKDE) 26(4):1012-1025 (2014) [<a href=\"http:\/\/degroup.cis.umac.mo\/~ryan\/publications\/shortestpath_tkde13.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">pdf<\/a>]<\/li>\n<li>Shen Ge, Leong Hou U, Nikos Mamoulis, David W. Cheung: Efficient All Top-k Computation \u2013 A Unified Solution for All Top-k, Reverse Top-k and Top-m Influential Queries. IEEE Trans. Knowl. Data Eng. 25(5): 1015-1027 (2013)<\/li>\n<li>Leong Hou U, Kyriakos Mouratidis, Man Lung Yiu, and Nikos Mamoulis. Optimal Matching between Spatial Datasets under Capacity Constraints. ACM Transactions on Database Systems, 35(2):44 pages, April 2010.<\/li>\n<li>Leong Hou U, Kyriakos Mouratidis, and Nikos Mamoulis. Continuous Spatial Assignment of Moving Users. VLDB Journal, 19(2):141-160, 2010.<\/li>\n<li>Leong Hou U, Nikos Mamoulis, and Man Lung Yiu. Computation and Monitoring of Exclusive Closest Pairs. IEEE Trans. Knowl. Data Eng., 20(12):1641-1654, 2008.<\/li>\n<\/ol>\n<h4>Book Chapters<\/h4>\n<ol>\n<li>Leong Hou U, Optimal Matching Between Spatial Datasets. Encyclopedia of GIS 2017: 1505-1511<\/li>\n<\/ol>\n<div>\n<h4>Refereed Conference Proceedings<\/h4>\n<\/div>\n<ol>\n<li><span style=\"letter-spacing: 0.2px\">Yiming Wang, Yiheng Zhang, Kaiyan Zhao, Xingjie Zuo, Xingyu Liu, Xuetao Li, Furui Liu, Bo An, Leong Hou U:&nbsp;Covariance Volume Maximization for Embodied Latent Exploration in Deep Reinforcement Learning. ICML 2026.<\/span><\/li>\n<li>Jingtian Ma, Jingyuan Wang, Leong Hou U: Seeking Commonality, Preserving Specificity: A Spectral-Aware Hierarchical Framework for Cross-City Road Representation Learning. ICML 2026.<\/li>\n<li>Tsz Nam Chan, Bojian Zhu, Leong Hou U, Dingming Wu, Wei Tu, Jianliang Xu: A Fast, Versatile, and User-friendly Plugin for Kernel Density Analysis. ICDE 2026.<\/li><li>Tsz Nam Chan , Hongwei Ye , Bojian Zhu, Leong Hou U, Dingming Wu, Ruisheng Wang, Joshua Zhexue Huang: PLAN: Fast and Approximate Gaussian Kernel Density Visualization in Road Networks. ICDE 2026.<\/li>\n<li style=\"letter-spacing: 0.2px\">Yiming Wang, Kaiyan Zhao, Borong Zhang, Yan Li, Leong Hou U: Latent State-Predictive Exploration for Deep Reinforcement Learning. AAAI 2026.&nbsp;<\/li>\n<li style=\"letter-spacing: 0.2px\">Yiming Wang, Kaiyan Zhao, Xu Li, Yan Li, Jiayu Chen, Steven Morad, Leong Hou U: Explore to Learn: Latent Exploration through Disentangled Synergy Patterns for Reinforcement Learning in Overactuated Control. AAAI 2026. (Oral)<\/li>\n<li style=\"letter-spacing: 0.2px\">Yiming Wang, Kaiyan Zhao, Ming Yang, Yan Li, Furui Liu, Jiayu Chen, Leong Hou U: DSAP: Enhancing Generalization in Goal-Conditioned Reinforcement Learning. AAAI 2026.&nbsp;<\/li>\n<li style=\"letter-spacing: 0.2px\">Rongqin Chen, Fan Mo, Pak Lon Ip, Shenghui Zhang, Dan Wu, Ye Li, Leong Hou U: Connectivity-Guided Sparsification of 2-FWL GNNs: Preserving Full Expressivity with Improved Efficiency. AAAI 2026.&nbsp;<span style=\"letter-spacing: 0.2px\">(Oral)<\/span><\/li>\n<li style=\"letter-spacing: 0.2px\">Jingtian Ma, Jingyuan Wang, Leong Hou U: Hierarchical Frequency-Decomposition Graph Neural Networks for Road Network Representation Learning. AAAI 2026.&nbsp;<span style=\"letter-spacing: 0.2px\">(Oral)<\/span><\/li>\n<li style=\"letter-spacing: 0.2px\">Jiayang Wu, Jiale Zhou, Xingyi Zhang, Xun Lin, Tianxu Lv, Leong Hou U, Rubo Wang, Yefeng Zheng: Multimodal Mixture-of-Experts with Retrieval Augmentation for Protein Active Site Identification. AAAI 2026.&nbsp;<span style=\"letter-spacing: 0.2px\">(Oral)<\/span><\/li>\n<li style=\"letter-spacing: 0.2px\">Rongqin Chen, Yan Li, Dan Wu, MO FAN, Shenghui Zhang, Pak Lon Ip, Hoi Cheong Iam, Ye Li, Leong Hou U: Enhanced Subgraph Learning in 2-FWL GNNs via Local Connectivity, Spectral, and Distance Encodings. KDD 2025.&nbsp;<\/li>\n<li style=\"letter-spacing: 0.2px\">Yue Zhong, Tsz Nam Chan, Leong Hou U, Dingming Wu, Wei Tu, Ruisheng Wang, Joshua Zhexue Huang: A Fast and Accurate Block Compression Solution for Spatiotemporal Kernel Density Visualization. KDD 2025.&nbsp;<\/li>\n<li style=\"letter-spacing: 0.2px\">Yiming Wang, Kaiyan Zhao, Yan Li, Leong Hou U: BILE: An Effective Behavior-based Latent Exploration Scheme for Deep Reinforcement Learning. IJCAI 2025.&nbsp;<\/li>\n<li style=\"letter-spacing: 0.2px\">Kaiyan Zhao, Yiming Wang, Yuyang Chen, Yan Li, Leong Hou U, Xiaoguang Liu: Efficient Diversity-based Experience Replay for Deep Reinforcement Learning. IJCAI 2025.<\/li>\n<li style=\"letter-spacing: 0.2px\">Ke Li, Shuo Shang, Leong Hou U: App2Exa: Accelerating Exact kNN Search via Dynamic Cache-Guided Approximation. IJCAI 2025.<\/li>\n<li style=\"letter-spacing: 0.2px\"><span style=\"letter-spacing: 0.2px\">Tsz Nam Chan, Bojian Zhu, Dingming Wu, Yun Peng, Leong Hou U, Wei Tu, Ruisheng Wang: A Fast Line Density Visualization Plugin for Geographic Information Systems. SIGMOD 2025 Demo.<\/span><\/li>\n<li style=\"letter-spacing: 0.2px\">Siyuan Wu, Leong Hou U, Panagiotis Karras: Balancing Bias in Two-sided Markets for Fair Stable Matchings. ICLR 2025.<\/li>\n<li style=\"letter-spacing: 0.2px\">Zijie Zhou, Zhaoqi Lu, Xuekai WEI, Rongqin Chen, Shenghui Zhang, Pak Lon Ip, Leong Hou U: Tokenphormer: Structure-aware Multi-token Graph Transformer for Node Classification. AAAI 2025.<\/li>\n<li style=\"letter-spacing: 0.2px\">Tsz Nam Chan, Pak Lon Ip, Bojian Zhu, Leong Hou U, Dingming Wu, Jianliang Xu, Christian S. Jensen: Large-scale Spatiotemporal Kernel Density Visualization. ICDE 2025.<\/li>\n<li style=\"letter-spacing: 0.2px\">Yiming Wang, Kaiyan Zhao, Furui Liu, Leong Hou U: Rethinking Exploration in Reinforcement Learning with Effective Metric-Based Exploration Bonus. NeurIPS 2024 (Accepted as Spotlight) <a style=\"letter-spacing: 0.2px\" href=\"https:\/\/sites.google.com\/view\/effective-metric-exploration\">Project Site<\/a><\/li>\n<li>Pak Lon Ip, Sheng Hui Zhang, Xue Kai Wei, Tsz Nam Chan, and Leong Hou U: HFGNN: Efficient Graph Neural Networks using Hub-Fringe Structures. International Conference on Data Mining 2024.&nbsp;<\/li>\n<li>Shenghui Zhang, Xuekai Wei, Rongqin Chen, Shunran Zhang, Pak Lon Ip, Zijie Zhou, Zhaoqi Lu, Leong Hou U: MIGNN: Exploiting Metric Isomorphism for Graph Neural Networks. The International Conference on Neural Information Processing (ICONIP) 2024.<\/li>\n<li>Shunran Zhang, Xiubo Zhang, Tsz Nam Chan, Shenghui Zhang, Leong Hou U: A Computation-Aware Shape Loss Function for Point Cloud Completion. AAAI 2024: 7287-7295<\/li>\n<li>Tsz Nam Chan, Zhe Li, Leong Hou U, Reynold Cheng: PLAME: Piecewise-Linear Approximate Measure for Additive Kernel SVM (Extended abstract). ICDE 2024: 5685-5686<\/li>\n<li>Yiming Wang, Ming Yang, Renzhi Dong, Binbin Sun, Leong Hou U, Furui Liu: Efficient Potential-based Exploration in Reinforcement Learning using Inverse Dynamic Bisimulation Metric. Advances in Neural Information Processing Systems 36: Annual Conference on Neural Information Processing Systems 2023 (NeurIPS 2023).<\/li>\n<li>Danni Ren, Leong Hou U and Wei Liu: Dual-view Contrastive Learning for Auction Recommendation. CIKM 2023 (accepted)<\/li>\n<li>Tsz Nam Chan, Leong Hou U, Byron Choi, Jianliang Xu, Reynold Cheng: Large-scale Geospatial Analytics: Problems, Challenges, and Opportunities. SIGMOD Conference Companion 2023: 21-29<\/li>\n<li>Tsz Nam Chan, Rui Zang, Pak Lon Ip, Leong Hou U, Jianliang Xu: PyNKDV: An Efficient Network Kernel Density Visualization Library for Geospatial Analytic Systems. SIGMOD Conference Companion 2023: 99-102<\/li>\n<li>Ming Yang, Renzhi Dong, Yiming Wang, Furui Liu, Yali Du, Mingliang Zhou, Leong Hou U: TieComm: Learning a Hierarchical Communication Topology Based on Tie Theory. DASFAA (1) 2023: 604-613<\/li>\n<li>Wei Liu, Leong Hou U, Shangsong Liang, Huaijie Zhu, Jianxing Yu, Yubao Liu, Jian Yin: Revisiting Positive and Negative Samples in Variational Autoencoders for Top-N Recommendation. DASFAA (2) 2023: 563-573<\/li>\n<li>Rongqin Chen, Shenghui Zhang, Leong Hou U, Ye Li. Redundancy-Free Message Passing for Graph Neural Networks. Advances in Neural Information Processing Systems 35: Annual Conference on Neural Information Processing Systems 2022 (NeurIPS 2022).<\/li>\n<li>Bo Tang, Jian Zeng, Qiandong Tang, Chuan Yang, Qiaomu Shen, Leong Hou U, Xiao Yan, Dan Zeng: CheetahKG: A Demonstration for Core-based Top-$k$ Frequent Pattern Discovery on Knowledge Graphs. ICDE 2022: 3134-3137<\/li>\n<li>Tsz Nam Chan, Leong Hou U, Byron Choi, Jianliang Xu. SLAM: Efficient Sweep Line Algorithms for Kernel Density Visualization. Proceedings of ACM Conference on Management of Data (SIGMOD), 2022. (<span style=\"letter-spacing: 0.2px\"><a href=\"https:\/\/github.com\/libkdv\/libkdv\" target=\"_blank\" rel=\"noopener\">project page<\/a>)<\/span><\/li>\n<li>Siyuan Wu and Leong Hou U, Tracking the Evolution: Discovering and Visualizing the Evolution of Literature, DASFAA 2022.<\/li>\n<li>Jian Zeng, Leong Hou U, Xiao Yan, Mingji Han, Bo Tang: Fast Core-based Top-k Frequent Pattern Discovery in Knowledge Graphs. ICDE 2021: 936-947<\/li>\n<li>Hanlin Li, Xiaowei Wu, Leong Hou U, Kun Pang Kou: Near-Optimal Fixed-Route Scheduling for Crowdsourced Transit System. ICDE 2021: 2273-2278<\/li>\n<li>Yinong Zhu, Yong Feng, Mingliang Zhou, Baohua Qiang, Leong Hou U, Jiajie Zhu: Distribution-Aware Hierarchical Weighting Method for Deep Metric Learning. ICASSP 2021: 1770-1774<\/li>\n<li>Yu Zhou, Yong Feng, Mingliang Zhou, Baohua Qiang, Leong Hou U, Jiajie Zhu: Deep Adversarial Quantization Network for Cross-Modal Retrieval. ICASSP 2021: 4325-4329<\/li>\n<li>Caihua Shan, Leong Hou U, Nikos Mamoulis, Reynold Cheng: A Toolkit for Managing Multiple Crowdsourced Top-K Queries. CIKM 2020: 3453-3456<\/li>\n<li>Caihua Shan, Leong Hou U, Nikos Mamoulis, Reynold Cheng, Xiang Li: A General Early-Stopping Module for Crowdsourced Ranking. DASFAA (2) 2020: 314-330<\/li>\n<li>Tsz Nam Chan, Man Lung Yiu, Leong Hou U: The Power of Bounds: Answering Approximate Earth Mover&#8217;s Distance with Parametric Bounds (Extended abstract). ICDE 2020: 2022-2023<\/li>\n<li>Tsz Nam Chan, Man Lung Yiu, Leong Hou U: KARL: Fast Kernel Aggregation Queries. ICDE 2019: 542-553 [<a href=\"http:\/\/www4.comp.polyu.edu.hk\/~csmlyiu\/conf\/ICDE19_KARL.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">pdf<\/a>]<\/li>\n<li>Siyuan Wu, Leong Hou U, Sourav S. Bhowmick, Wolfgang Gatterbauer: PISTIS: A Conflict of Interest Declaration and Detection System for Peer Review Management. SIGMOD Conference 2018: 1713-1716. [<a href=\"http:\/\/degroup.cis.um.edu.mo\/coi\/\">project page<\/a>]<\/li>\n<li>Yan Li, Ngai Meng Kou, Hao Wang, Leong Hou U, Zhiguo Gong: A Confidence-Aware Top-k Query Processing Toolkit on Crowdsourcing. PVLDB 10(12): 1909-1912 (2017). [<a href=\"http:\/\/degroup.cis.umac.mo\/topkdemo\/index.html\">project page<\/a>]<\/li>\n<li>Ye Li, Leong Hou U, Man Lung Yiu, Ngai Meng Kou: An Experimental Study on Hub Labeling based Shortest Path Algorithms. PVLDB 11(4): 445-457 (2017) [<a href=\"http:\/\/degroup.cis.umac.mo\/sspexp\">project page<\/a>]<\/li>\n<li>Yiyang Yang, Zhiguo Gong, Qing Li, Leong Hou U, Ruichu Cai, Zhifeng Hao: A Robust Noise Resistant Algorithm for POI Identification from Flickr Data. IJCAI 2017: 3294-3300.<\/li>\n<li>Ngai Meng Kou, Yan Li, Hao Wang, Leong Hou U, Zhiguo Gong: Crowdsourced Top-k Queries by Confidence-Aware Pairwise Judgments. SIGMOD Conference 2017: 1415-1430. [<a href=\"http:\/\/degroup.cis.umac.mo\/topkdemo\/index.html\">project page<\/a>]<\/li>\n<li>Yuhong Li, Bo Tang, Leong Hou U, Man Lung Yiu, Zhiguo Gong: Fast Subsequence Search on Time Series Data. EDBT 2017: 514-517.<\/li>\n<li>Shanshan Wu, Huaizhong Lin, Leong Hou U, Yunjun Gao, Dongming Lu: Finding Frequent Items in Time Decayed Data Streams. APWeb (2) 2016: 17-29.<\/li>\n<li>Bo Tang, Man Lung Yiu, Yuhong Li, Leong Hou U: Exploit Every Cycle: Vectorized Time Series Algorithms on Modern Commodity CPUs. ADMS\/IMDM@VLDB 2016: 18-39.<\/li>\n<li>Ngai Meng Kou, Leong Hou U, Nikos Mamoulis, Yuhong Li, Ye Li, and Zhiguo Gong: A Topicbased Reviewer Assignment System. In Proceedings of VLDB2015 (demo paper).<\/li>\n<li>Ngai Meng Kou, Leong Hou U, Nikos Mamoulis, and Zhiguo Gong: Weighted Coverage based Reviewer Assignment. In Proceedings of SIGMOD2015. [<a href=\"http:\/\/degroup.cis.umac.mo\/reviewerassignment\/\" target=\"_blank\" rel=\"noopener noreferrer\">project page<\/a>]<\/li>\n<li>Yuhong Li, Leong Hou U, Man Lung Yiu, and Zhiguo Gong: Quick-Motif: An Efficient and Scalable Framework for Exact Motif Discovery. In Proceedings of ICDE2015. [<a href=\"http:\/\/degroup.cis.umac.mo\/quickmotifs\/\" target=\"_blank\" rel=\"noopener noreferrer\">project page<\/a>]<\/li>\n<li>Yuhong Li, Leong Hou U, Man Lung Yiu, Zhiguo Gong: Discovering Longest-lasting Correlation in Sequence Databases. PVLDB 6(14):1666-1677 (2013) [<a href=\"http:\/\/degroup.cis.umac.mo\/~ryan\/publications\/longestlasting_vldb13.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">pdf<\/a>]<\/li>\n<li>Yu Tang, Leong Hou U, Yilun Cai, Nikos Mamoulis, Reynold Cheng: Earth Mover\u2019s Distance based Similarity Search at Scale. PVLDB 7(4):313-324 (2013) [<a href=\"http:\/\/degroup.cis.umac.mo\/~ryan\/publications\/emd_vldb14.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">pdf<\/a>]<\/li>\n<li>Yiyang Yang, Zhiguo Gong, and Leong Hou U. Identifying points of interest by self-tuning clustering. In SIGIR, 2011.<\/li>\n<li>Man Lung Yiu, Leong Hou U, Simonas Saltenis, and Kostas Tzoumas. Efficient proximity detection among mobile users via self-tuning policies. PVLDB, 3(1):985\u2013996, 2010.<\/li>\n<li>Leong Hou U, Nikos Mamoulis, Klaus Berberich, and Srikanta J. Bedathur. Durable top-k search in document archives. In SIGMOD Conference, pages 555\u2013566, 2010.<\/li>\n<li>Leong Hou U, Nikos Mamoulis, and Kyriakos Mouratidis. A fair assignment algorithm for multiple preference queries. VLDB, 2(1):1054-1065, 2009.<\/li>\n<li>Leong Hou U, Nikos Mamoulis, and Kyriakos Mouratidis. Efficient evaluation of multiple preference queries. In ICDE, pages 1251-1254, 2009.<\/li>\n<li>Leong Hou U, Man Lung Yiu, Kyriakos Mouratidis, and Nikos Mamoulis. Capacity constrained assignment in spatial databases. In SIGMOD Conference, pages 15-28, 2008.<\/li>\n<\/ol>\n<p>Check&nbsp;<strong><a href=\"https:\/\/dblp.org\/pid\/38\/4996.html\" target=\"_blank\" rel=\"noopener noreferrer\">here<\/a><\/strong>&nbsp;for my DBLP record and <a href=\"https:\/\/orcid.org\/0000-0002-5135-5165\">here<\/a> for my ORCID record.<\/p>\n<p>I am looking for research assistants, PhD students, and postdocs who intend to study on premier research and methodologies (cf.&nbsp;<a href=\"https:\/\/www.aminer.cn\/ranks\/conf\" target=\"_blank\" rel=\"noopener\">Aminer<\/a>,&nbsp;<a href=\"https:\/\/www.ccf.org.cn\/Academic_Evaluation\/By_category\/\" target=\"_blank\" rel=\"noopener\">CCF<\/a>, or&nbsp;<a href=\"http:\/\/portal.core.edu.au\/conf-ranks\/?search=&amp;by=all&amp;source=CORE2021&amp;sort=arank&amp;page=1\" target=\"_blank\" rel=\"noopener\">Core<\/a>) in Data Engineering and Artificial Intelligence.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c5b7a7f elementor-widget elementor-widget-spacer\" data-id=\"3c5b7a7f\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-ac20b35 elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ac20b35\" data-element_type=\"section\" id=\"0003\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-21d5ed53\" data-id=\"21d5ed53\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-44566975 elementor-widget elementor-widget-spacer\" data-id=\"44566975\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-256b6c60 elementor-widget elementor-widget-heading\" data-id=\"256b6c60\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Teaching<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a0e72f3 elementor-widget elementor-widget-text-editor\" data-id=\"2a0e72f3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4>M.Sc. Courses<\/h4>\n<ul>\n<li><span style=\"font-size: 12pt\">CISC7201 Introduction to Data Science Programming (Fall 2019, Fall 2020, Fall 2021, Fall 2022, Fall 2023, Fall 2024)<\/span><\/li>\n<li><span style=\"font-size: 12pt\">COIS724. Big Data Processing and Analysis (Fall 2015, Fall 2016, Fall 2017, Spring 2019, Spring 2020, Spring 2021, Spring 2022, Spring 2023, Spring 2024, Spring 2025)<\/span><\/li>\n<li><span style=\"font-size: 12pt\">CISC7015. Advanced Topics in Computer Science I \u2013 Blockchain Technology and Applications (Spring 2019)<\/span><\/li>\n<li><span style=\"letter-spacing: 0.2px;font-size: 12pt\">COIS704. Current Development in Database (Fall 2014)<\/span><\/li>\n<li><span style=\"font-size: 12pt\">ECOM703. Distributed Database Management (Fall 2014)<\/span><\/li>\n<li><span style=\"font-size: 12pt\">ECOM706. Data Warehousing (Spring 2011, Spring 2012, Spring 2013)<\/span><\/li>\n<\/ul>\n<h4>B.Sc. Courses<\/h4>\n<ul>\n<li><span style=\"font-size: 12pt\">The ACM-ICPC International Collegiate Programming Contest (ACM ICPC) Training (Coordinator and Coach, 2016-present)<\/span><\/li>\n<li><span style=\"font-size: 12pt\">CISB410. Final Year Project (Coordinator, 2010-present)<\/span><\/li>\n<li><span style=\"font-size: 12pt\">CISC7201. Introduction to Data Science Programming (Fall 2018)<\/span><\/li>\n<li><span style=\"font-size: 12pt\">CISB363. Information Retrieval and Web Mining (Spring 2014, Spring 2015, Spring 2016, Spring 2017, Spring 2018)<\/span><\/li>\n<li><span style=\"font-size: 12pt\">CISB359. Information Systems Analysis and Design (Fall 2011, Fall 2012, Fall 2013)<\/span><\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6dbddbcb elementor-widget elementor-widget-spacer\" data-id=\"6dbddbcb\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-4e39d6d6 elementor-section-content-middle elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4e39d6d6\" data-element_type=\"section\" id=\"0004\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-55debd4f\" data-id=\"55debd4f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5ce4d443 elementor-widget__width-auto elementor-widget elementor-widget-spacer\" data-id=\"5ce4d443\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-17bc723f elementor-widget elementor-widget-heading\" data-id=\"17bc723f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><br>Technical Activities<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-inner-section elementor-element elementor-element-61bce695 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"61bce695\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-5ce5d322\" data-id=\"5ce5d322\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-35893a34 elementor-widget elementor-widget-text-editor\" data-id=\"35893a34\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4 class=\"H4\">Reviewer for journals<\/h4><ul><li>IEEE Transactions on Knowledge and Data Engineering (IEEE TKDE)<\/li><li>Very Large Data Base Journal (VLDBJ)<\/li><li>ACM Transactions on Spatial Algorithms and Systems (ACM TSAS)<\/li><li>IEEE Transactions on Mobile Computing<\/li><li>IEEE Transactions on Intelligent Transportation<\/li><li>Information Systems (Inf. Syst.)<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-426358a3 elementor-widget elementor-widget-text-editor\" data-id=\"426358a3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4>International Conference Technical Program\/Review Committee and Session Chair<\/h4>\n<ul>\n<li>2026: SIGMOD, VLDB, ICDE<\/li><li>2025: VLDB, ICDE, NeurIPS, ICML, ICLR, WWW, IJCAI, DASFAA<\/li>\n<li>2024: VLDB, ICDE, KDD, NeurIPS, ICML, WWW, IJCAI, DASFAA<\/li>\n<li>2023: VLDB, ICDE, DASFAA, PAKDD, WISE,&nbsp;WAIM-APWeb<\/li>\n<li>2022: ICDE,&nbsp;DASFAA, PAKDD, CIKM, WISE,&nbsp;WAIM-APWeb<\/li>\n<li>2021: DASFAA, PAKDD, WAIM-APWeb<\/li>\n<li>2020: CIKM, DASFAA, PAKDD, WAIM-APWeb<\/li>\n<li>2019: DASFAA<\/li>\n<li>2018: WISE, PAKDD, WAIM<\/li>\n<li>2017: VLDB Demo, WAIM<\/li>\n<li>2016: CIKM (KM Track)<\/li>\n<li>2015: DASFAA, APWEB, CIKM (KM Track), SIGMOD\/PODS PhD Symposium<\/li>\n<li>2014: CIKM (KM Track), DASFAA, WAIM, MobiGIS, WebDB<\/li>\n<li>2013: SIGMOD, CIKM (KM Track), WAIM<\/li>\n<li>2012: KDD, ER, MobiGIS<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-6a4f6713\" data-id=\"6a4f6713\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-579c0622 elementor-widget elementor-widget-text-editor\" data-id=\"579c0622\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4>International Conference Steering\/Organization Committee<\/h4><ul><li>Program Co-Chair of <a href=\"https:\/\/conferences.cis.um.edu.mo\/ieeebigdata2025\/\">IEEE BigData 2025<\/a><\/li><li>Conference Co-Chair of ISET and ICBL 2024\u00a0<\/li><li>Local Exhibition Chair of <a href=\"https:\/\/ijcai-23.org\/\">the 32nd International Joint Conference on Artificial Intelligence<\/a> (IJCAI 2023)<\/li><li>PhD Consortium cochair of <a href=\"http:\/\/www.tjudb.cn\/dasfaa2023\/node\/2\">the 28th International Conference on Database Systems for Advanced Applications<\/a> (DASFAA 2023)<\/li><li>Program cochair of the 5th APWeb-WAIM International Joint Conference on Web and Big Data (APWeb-WAIM 2021)<\/li><li>Local cochair of the <a href=\"https:\/\/conferences.sigcomm.org\/acm-icn\/2019\/index.php\">2019 ACM Conference on Information-Centric Networking<\/a> (ACM ICN 2019)<\/li><li>Local Exhibition chair of the 2019\u00a0<a href=\"https:\/\/www.ijcai19.org\/\" target=\"_blank\" rel=\"noopener noreferrer\">International Joint Conference on Artificial Intelligence<\/a>\u00a0(IJCAI-19)<\/li><li>Finance chair and web master of the 2019\u00a0<a href=\"http:\/\/conferences.cis.umac.mo\/icde2019\/\" target=\"_blank\" rel=\"noopener noreferrer\">IEEE International Conference on Data Engineering\u00a0<\/a>(ICDE 2019)<\/li><li>Workshop cochair of the 2019 <a href=\"http:\/\/pakdd2019.medmeeting.org\/en\" target=\"_blank\" rel=\"noopener noreferrer\">Pacific-Asia Conference on Knowledge Discovery and Data Mining<\/a>\u00a0(PAKDD 2019)<\/li><li>Program cochair of the 2018 <a href=\"http:\/\/www.public.asu.edu\/~jiayu2\/georich18\/\" target=\"_blank\" rel=\"noopener noreferrer\">ACM workshop on Managing and Mining Enriched Geo-Spatial Data<\/a>\u00a0(GeoRich)<\/li><li>Publication chair of the 2014, 2015, 2016, 2017\u00a0<a href=\"http:\/\/www.dbs.ifi.lmu.de\/georich15\/\" target=\"_blank\" rel=\"noopener noreferrer\">ACM workshop on Managing and Mining Enriched Geo-Spatial Data<\/a>\u00a0(GeoRich)<\/li><li>Local organizing chair of the 2014\u00a0<a href=\"http:\/\/www.cis.umac.mo\/waim2014\/\" target=\"_blank\" rel=\"noopener noreferrer\">Web-Age Information Management<\/a>(WAIM 2014)<\/li><li>Local organizing chair of the 2012\u00a0<a href=\"http:\/\/www.cis.umac.mo\/wic2012\/\" target=\"_blank\" rel=\"noopener noreferrer\">IEEE\/WIC\/ACM World Intelligence\u00a0<\/a><\/li><li><a href=\"http:\/\/www.cis.umac.mo\/wic2012\/\" target=\"_blank\" rel=\"noopener noreferrer\">Congress 2012<\/a>(WIC 2012)<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-6fed3146 elementor-widget elementor-widget-spacer\" data-id=\"6fed3146\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-top-section elementor-element elementor-element-69037332 elementor-section-stretched elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"69037332\" data-element_type=\"section\" id=\"0005\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;stretch_section&quot;:&quot;section-stretched&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-73812a8f\" data-id=\"73812a8f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7437cb9b elementor-widget elementor-widget-spacer\" data-id=\"7437cb9b\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-74e17520 elementor-widget elementor-widget-heading\" data-id=\"74e17520\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Supervisions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section data-particle_enable=\"false\" data-particle-mobile-disabled=\"false\" class=\"elementor-section elementor-inner-section elementor-element elementor-element-5db90aa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5db90aa\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-40832a0e\" data-id=\"40832a0e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ad7ed78 elementor-widget elementor-widget-text-editor\" data-id=\"ad7ed78\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4>Research Students<\/h4><ul><li><span style=\"color: var( --e-global-color-dae589b );letter-spacing: 0.2px\">Yiming WANG (PhD)<\/span><\/li><li><span style=\"color: var( --e-global-color-dae589b );letter-spacing: 0.2px\">Binbin SUN (PhD)<\/span><\/li><li>Shungran ZHANG (PhD)<\/li><li>Xu LI (PhD)<\/li><li><span style=\"letter-spacing: 0.2px\">Paklon IP (PhD)<\/span><\/li><li><span style=\"letter-spacing: 0.2px\">Shenghui ZHANG\u00a0(PhD, Graduated 2025),\u00a0<\/span>Enhancing Graph Neural Networks through Metric Spaces: A Topological Perspective<\/li><li><span style=\"color: var( --e-global-color-dae589b );letter-spacing: 0.2px\">Liqing ZHANG (PhD, Graduated 2024),\u00a0<\/span>Intelligent Rail Traffic Operation Method Based on Deep Reinforcement Learning<\/li><li>Rongqin Chen (PhD, Graduated 2024), Insights into Graph Neural Network Expressivity: Challenges, Enhancements and Applications<\/li><li>Siyuan WU (PhD, Graduated 2023, Now a PostDoc at SMU, Singapore),\u00a0Enhancing Efficiency, Fairness, and Effectiveness in Task Assignments<\/li><li>Hanlin LI (PhD, co-supervised,\u00a0<span style=\"letter-spacing: 0.2px\">Graduated 2023<\/span>), Bus Service Design with Near-optimal Scheduling and Skip-stop Tactic<\/li><li>Paklon IP (MSc. Graduated 2023)<\/li><li>Danni REN (MSc. Graduated 2023)<\/li><li><span style=\"letter-spacing: 0.2px\">Yiming WANG (MSc. Graduated 2022)<\/span><\/li><li><span style=\"color: var( --e-global-color-dae589b );letter-spacing: 0.2px\">Yuxue SHI (MSc , Graduated 2021),\u00a0<\/span>Efficient Edge Computing Framework for Index Sharing Based Route Planning in Last-Mile Delivery<\/li><li>Wenyue MA (MSc,\u00a0<span style=\"letter-spacing: 0.2px\">Graduated\u00a0<\/span>2021), Trajectory-driven<br \/>Optimizing Influential on Advertising Placement<\/li><li>Ye LI (PhD, Graduated 2021),\u00a0Efficient query processing on very large networks<\/li><li>Yan LI (PhD, Graduated 2020), Quality Aware Crowdsourced Processing<\/li><li>Pei ZHANG (MSc, Graduated 2020), Crowdsourcing Top-k Processing by Prior Knowledge<\/li><li>Yuhao YOU (MSc, Graduated 2019), Overlapping community search with clique merge community model<\/li><li>Changyi MA (MSc, Graduated 2017), Functional Region based Daily-life Activity Recommendation<\/li><li>Xuan Liu RU (MSc, Graduated 2016), Link prediction in time-aware graphs<\/li><li>Yan LI (MSc, Graduated 2015), Crowdsourcing Object Ranking by Pairwise Comparisons<\/li><li>Jian WANG (MSc, Graduated 2015), Multidimensional Similarity Join using MapReduce<\/li><li>Junjie ZHANG (MSc, Graduated 2015), A Scalable Framework for Continuous Keyword Search Queries<\/li><li>Nana PAN (MSc, Graduated 2014), On Dynamic Top-k Influence Maximization<\/li><li>Bailong LIAO (MSc, Graduated 2014), Compact Main Memory Indexing for Efficient Spatial Network Queries<\/li><li>Bohan ZHAN (MSc, Graduated 2014), Influence Maximization on MapReduce<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-7576d15\" data-id=\"7576d15\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4cfcb590 elementor-widget elementor-widget-text-editor\" data-id=\"4cfcb590\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h4>Final Year Projects<\/h4><ul><li>Kai Yuan WONG, Enhancing Stock Trading Strategies with Integrated Feature Enhancement &amp; Reward Shaping: A Reinforcement Learning Approach (2023\/2024)<\/li><li>Chi Hou CHAN, Tetris Reinforcement Learning on Gym Environment (2023\/2024)<\/li><li>Kai Kei HUANG and Wai Kun\u00a0<span style=\"letter-spacing: 0.2px\">WONG<\/span>, Multi-Stock High Frequency Day Trading with Reinforcement learning (2023\/2024)<\/li><li>Jiajin ZHANG, Reinforcement Learning in Games (2022\/2023)\u00a0<em style=\"letter-spacing: 0.2px\">The best projects of CIS in 2022\/2023<\/em><\/li><li>Minnie LO, E-Voting System based on Blockchain Technology (2021\/2022)\u00a0<em style=\"letter-spacing: 0.2px\">One of 5 best projects of CIS in 2021\/2022<\/em><\/li><li>Iok Keong WONG and Kuok Hou HO, A Study of Reinforcement Learning Algorithms in CARLA (2020\/2021)\u00a0<em style=\"letter-spacing: 0.2px\">One of 5 best projects of CIS in 2020\/2021<\/em><\/li><li>Jinrong LIANG and Jinxuan LIANG, CARLA: autonomous driving system based using machine learning techniques (2019\/2020)\u00a0<em style=\"letter-spacing: 0.2px\">One of 5 best projects of CIS in 2019\/2020<\/em><\/li><li>Colby Kan, Hayden Lam, Johnson Ho, and Thomas Ho, Data-driven traffic simulation (2018\/2019)\u00a0<em style=\"letter-spacing: 0.2px\">One of 5 best projects of CIS in 2018\/2019<\/em><\/li><li>Io Kei CHAN, Chi Kin LAO, Seng Cheong UN, and Kin Chong CHAN, Music Data Driven Virtual Reality Gaming System (2017\/2018)\u00a0<em style=\"letter-spacing: 0.2px\">The best projects of CIS in 2017\/2018<\/em><\/li><li>Ka Lap SI and Manqi FANG, Big Traffic Data Analysis and Visualization (2017\/2018)\u00a0<em style=\"letter-spacing: 0.2px\">One of 5 best projects of CIS in 2017\/2018<\/em><\/li><li>Ka Hei LEONG, Ka Chon LEONG, and Pui On KUAN, The Rise of Magnetic Positioning: An Emerging and Infrastructure Free Solution for Indoor Positioning (2016\/2017)\u00a0<em style=\"letter-spacing: 0.2px\">One of 5 best projects of CIS in 2016\/2017<\/em><\/li><li>Wai Lon FAN and Ka Chon WONG, Big Data for Smart Transport \u2013 Augmented Reality based Transportation System (2015\/2016)\u00a0<em>One of 5 best projects of CIS in 2016<\/em><\/li><li>Renjie GOU and Jlio Mamad Bald Quina, Big Data for Smart Transport \u2013 Public Transportation Planning (<span style=\"letter-spacing: 0.2px\">2015\/<\/span>2016)<\/li><li>Chi Lap PUN and Weng un IONG, Travel Route Recommendation System (2014\/2015)\u00a0<em>The best project of CIS in 2015<\/em><\/li><li>Kit NG, Mei Keong U, and Kin Fei WONG, Interactive TV System on Mobile Devices (2012\/2013)<\/li><li>Kun YAO, G-PathSim (<span style=\"letter-spacing: 0.2px\">2012\/<\/span>2013)\u00a0<em>The runner-up project of CIS in 2013<\/em><\/li><li>Wai Kuan CHEANG, Keng Fai LEI, and Man Cheng HO, StallKet \u2013 Open your stall at anytime and anywhere (2011\/2012)<\/li><li>Mao Teng LAM and Ka Chon UN, A Study on Search and Visualization in DBLP (2011\/2012)<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-42dfdcc9 elementor-widget elementor-widget-spacer\" data-id=\"42dfdcc9\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>This is Leong Hou U \u4f59\u4eae\u8c6a Ryan from UM Associate Professor State Key Laboratory of Internet of Things for Smart City Department of Computer and Information Science Faculty of Science and Technology Other Positions and Services Head of Centre for Data Science, Institute of Collaborative Innovation Final Year Project coordinator, Department of Computer and Information &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.fst.um.edu.mo\/personal\/ryanlhu\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Leong Hou U&#8221;<\/span><\/a><\/p>\n","protected":false},"author":69,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_canvas","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-54733","page","type-page","status-publish","hentry","entry"],"_links":{"self":[{"href":"https:\/\/www.fst.um.edu.mo\/personal\/wp-json\/wp\/v2\/pages\/54733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fst.um.edu.mo\/personal\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.fst.um.edu.mo\/personal\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.fst.um.edu.mo\/personal\/wp-json\/wp\/v2\/users\/69"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fst.um.edu.mo\/personal\/wp-json\/wp\/v2\/comments?post=54733"}],"version-history":[{"count":20,"href":"https:\/\/www.fst.um.edu.mo\/personal\/wp-json\/wp\/v2\/pages\/54733\/revisions"}],"predecessor-version":[{"id":59904,"href":"https:\/\/www.fst.um.edu.mo\/personal\/wp-json\/wp\/v2\/pages\/54733\/revisions\/59904"}],"wp:attachment":[{"href":"https:\/\/www.fst.um.edu.mo\/personal\/wp-json\/wp\/v2\/media?parent=54733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}