UCSB COMPUTER SCIENCE DEPARTMENT PRESENTS:
Wednesday, January 12, 2011
11:00 AM – 12:00 PM
Computer Science Conference Room, Harold Frank Hall Rm. 1132
HOST: Xifeng Yan
SPEAKER: Christoph F. Eick
Computer Science, University of Houston
Title: Frameworks and Algorithms for Regional Knowledge Discovery
It has been pointed out in the literature that most relationships in spatial data sets are geographically regional, rather than global. Consequently, regional knowledge plays a key role for analyzing and understanding spatial datasets. A generic region discovery framework is presented that is augmented with families of parameterized measures of interestingness that are capable to capture what domain experts are interested in. The proposed framework views region discovery as a clustering problem and the goal of region discovery is to find a set of spatial clusters (regions) that maximize an externally given reward-based fitness function. Representative-based, grid-based and agglomerative clustering algorithms for region discovery in spatial datasets will be introduced and compared. Experimental results of applying the proposed framework and algorithms to identifying hotspots and collocation patterns in spatial datasets, to learn regional regression functions and to model regional differences in behavior of web users are presented. Finally, the framework is generalized to analyze related datasets.
Christoph F. Eick is an Associate Professor in the Department of Computer Science at the University of Houston and the Director of the UH Data Mining and Machine Learning Group. He received a PhD degree from the University of Karlsruhe in 1984. His research interests include data mining, machine learning, evolutionary computing, geo-graphical information systems, knowledge-based systems, and artificial intelligence. He published more than 120 papers in these areas. He serves on the program committee of the IEEE Data Mining Conference and other data mining and machine learning conferences.