Databases and Data Mining 李素瑛、曾憲雄、梁婷、彭文志、黃俊龍
Members and Research Directions Multimedia databases and mining 李素瑛 E-learning platform and mining 曾憲雄 Information retrieval and Web mining 梁婷 Sensor data management and mining 彭文志 Mobile data management and mining 黃俊龍、彭文志
Sensor data management and mining In-network mining Object moving patterns Clustering Multi-domain sequential pattern mining Outlier detection Energy efficient query processing Query optimization Spatial query processing such as KNN and event surrounding query
In-Network Mining Mining object moving behavior In-network mining algorithm Hierarchy optimization Energy efficient scheme for object tracking Query processing mechanism 4 3 Location prediction aggregation 2 1 1 1 1 Location prediction
Outliner Detection in WSN Trust network for data accuracy Building trust relations among sensors Filtering faulty readings Ensuring data accuracy
Location-dependent Services Community Discovery Spatial Query Processor Folksonomy Database GPS Query Focused Crawler Map Database Adapted Query List Summarization and Ranking Recommendation Service Other Services Location-dependent Services
Research Area of Prof. S.-Y. Lee Peer-to-Peer Content Based Information Retrieval Video Understanding Human behavior analysis Video based analysis of sports video
Peer-to-Peer Content Based Information Retrieval Traditional IR Systems Centralized, but not Scalable Traditional P2P System Scalable fault tolerant, self-organizing Only support exact key match Extend P2P with content-based search Content-based Music/Image Retrieval Semantic-based Publish/Subscribe This work is about building p2p IR system using structured overlay networks, which is also called DHT Efficient at lookup objects given precise key, not good at partial match, like we do with search engines.
Human Behavior Analysis Object Extraction Feature Selection Action Recognition
Video based analysis of sports video Sports video analysis Ball and player tracking Strategy analysis Event detection Video enrichment