Extracting Information and Answering Questions
نویسنده
چکیده
To move beyond current keyword-based approaches to document retrieval, we need to provide the user with a range of technologies for obtaining information and answering questions. One of these is information extraction (IE), which has the potential, for a limited range of requests, to provide more focused and comprehensive responses. IE has been constrained by limitations on the performance of natural language analysis, so we consider some of the ways in which these limitations are being addressed. We then turn to the ways in which IE can be combined with keyword-based methods to yield improved document and passage retrieval.
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