%0 Conference Paper %A Reisinger, Joseph %A Pasca, Marius %B 18th International World Wide Web Conference %C Madrid, Spain %D 2009 %F www2009:198 %P 1235-1235 %T Bootstrapped Extraction of Class Attributes %U http://www2009.eprints.org/198/ %X As an alternative to previous studies on extracting class attributes from unstructured text, which consider either Web documents or query logs as the source of textual data, A bootstrapped method extracts class attributes simultaneously from both sources, using a small set of seed attributes. The method improves extraction precision and also improves attribute relevance across 40 test classes.