Patent ID: 6732098
Filing Date: 2004-05-04
Classification: G06F,Y10S

Abstract:
A system for performing a search using a relational text index, the system comprising:a computer system having an input device, an output device, storage media, dynamic memory and a processor, documents located on said storage media, a parser capable of parsing natural language sentences contained within said documents to identify grammatical parts of the natural language sentences, a tool for applying caseframes to said parsed sentences to generate caseframe extractions, caseframes being syntactic structures that recognize local area context, a tool for performing thematic role assignment on said caseframe extractions to generate thematic role extractions, a tool for utilizing sentence information to build a relational text index that is usable by said computer system, said relational text index being located on said storage media and a search tool performing a search of said documents using said relational text index; wherein said search tool can search using at least one thematic role as a search determiner; and wherein said search tool can search using a thematic role specifier as a search determiner.