Robust Natural Language Analysis
نویسنده
چکیده
Our basic goal is the development of more robust systems for extracting information from natural language text. A robust system is one which is able to extract at least partial information despite the presence of ill-formed or unexpected syntactic, semantic, or discourse structures. Our approach has two aspects: First, we incorporate a rich set of syntactic, semantic, and discourse constraints, so that one type of constraint can guide us to a correct analysis even if another type is violated. Second, we provide mechanisms for relaxing individual constraints, and for scoring alternative analyses, so that the analysis violating the fewest constraints (and therefore, presumably, the best analysis obtainable for a sentence) will be selected.
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