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

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aggregation Location prediction

Location prediction

Outliner Detection in WSN Trust network for data accuracy

Building trust relations among sensors Filtering faulty readings Ensuring data accuracy

Map Database

GPSSpatial Query

Processor

Focused Crawler

Folksonomy Database

CommunityDiscovery

Summarizationand Ranking

RecommendationService

OtherServices

Location-dependent Services

Query

AdaptedQuery List

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

Human Behavior Analysis

Object Extraction Feature Selection Action Recognition

Sports video analysis Ball and player

tracking Strategy analysis Event detection Video enrichment

Video based analysis of sports video