TextRunner: Open Information Extraction on the Web
Traditional information extraction systems have focused on satisfying precise, narrow, pre specified requests from small, homogeneous corpora. In contrast, the TextRunner system demonstrates a new kind of information extraction, called Open Information Extraction (OIE) in which the system makes a single, data driven pass over the entire corpus and extracts a large set of relational tuples, without requiring any human input. (Banko et al. 2007) TextRunner is a fully implemented, highly scalable example of OIE. TextRunner's extractions are indexed, allowing a fast query mechanism.
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