Faculty Recruiting Make a Gift

Truth Finding on the Deep Web

24 Oct
Wednesday, 10/24/2012 9:00am to 10:00am

Luna Dong
AT&T Research
Data Management

Computer Science Building, Room 150

Faculty Host: Alexandra Meliou

The Web has been changing our lives enormously and people rely more and more on the Web to fulfill their information needs. Compared with traditional media, information on the Web can be published fast, but with fewer guarantees on quality and credibility. Indeed, Web sources are of different qualities, sometimes providing conflicting, out-of-date and incomplete data. The sources can also easily copy, reformat and modify data from other sources, propagating erroneous data.

In this talk we present a recent study for truthfulness of Deep Web data in two domains where we believed data quality is important to people's lives: Stock and Flight. We then describe how we can resolve conflicts from different sources by leveraging accuracy of the sources and the copying relationships between the sources using statistical models. We demo our SOLOMON system, which can effectively detect copying between data sources, leverage the results in truth discovery, and provide a user-friendly interface to facilitate users in understanding the results.

About the Speaker:

Dr. Xin Luna Dong is a researcher at AT&T Labs-Research. She received a Ph.D. in Computer Science and Engineering from University of Washington in 2007, received a Master's Degree in Computer Science from Peking University in China in 2001, and received a Bachelor's Degree in Computer Science from Nankai University in China in 1998. Her research interests include databases, information retrieval and machine learning, with an emphasis on data integration, data cleaning, personal information management, and web search. She has led the Solomon project, whose goal is to detect copying between structured sources and to leverage the results in various aspects of data integration, and the Semex personal information management system, which got the Best Demo award (one of top-3) in Sigmod'05. She has co-chaired Sigmod/PODS PhD Symposium'12, Sigmod New Researcher Symposium'12, QDB'12, WebDB'10, has served as a track chair for the program committee of ICDE'13, CIKM'11, and has served !
in the program committee of VLDB'13, Sigmod'12, VDLB'12, Sigmod'11, VLDB'11, PVLDB'10, WWW'10, ICDE'10, VLDB'09, etc.