Entity relation discovery from web tables and links

The World-Wide Web consists not only of a huge number of unstructured texts, but also a vast amount of valuable structured data. Web tables [2] are a typical type of structured information that are pervasive on the web, and Web-scale methods that automatically extract web tables have been studied extensively [1]. Many powerful systems (e.g., OCTOPUS [4], Mesa [3]) use extracted web tables as a fundamental component. In the database vernacular, a table is defined as a set of tuples which have the same attributes. Similarly, a web table is defined as a set of rows (corresponding to database tuples) which have the same column headers (corresponding to database attributes). Therefore, to extract a web table is to extract a relation on the web. In databases, tables often contain foreign keys which refer to other tables. Therefore, it follows that hyperlinks inside a web table sometimes function as foreign keys to other relations whose tuples are contained in the hyperlink’s target page...

• Type: Conference
• Year: 2010
• Where: WWW
• Authors: Cindy Xide Lin, Bo Zhao, Tim Weninger, Jiawei Han, Bing Liu
• Keywords: Foreign Keys, Internet Technology, Web Table, World-Wide Web, WWW 2010