Information retrieval by natural language querying
AssigneeDiscern Communications, Inc.
InventorsDouglas E. Appelt, James Frederick Arnold, John S. Bear, Jerry Robert Hobbs, David J. Israel, Megumi Kameyama, David L. Martin, Karen Louise Myers, Gopalan Ravichandran, Mark Edward Stickel, William Mabry Tyson
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Abstract
A natural language information querying system includes an indexing facility configured to automatically generate indices of updated textual sources based on one or more predefined grammars and a database coupled to the indexing facility to store the indices for subsequent searching.
Claims51
A system for providing information in response to a natural language query, comprising:
- an information extraction engine adapted to index an updated text source based on a predefined grammar, wherein said predefined grammar is based on one or more topics and objects;
- a database coupled to the information extraction engine to store the index output;
- and
- a natural language query engine coupled to the database to search the index for the text corpus in response to the natural language query.
A natural language information querying system, comprising:
- an indexing facility configured to automatically generate indices of updated versions of the textual information based on a predefined grammar, wherein said predefined grammar is based on one or more topics and objects;
- and
- a database coupled to the indexing facility to store the indices.
A method for providing information in response to a natural language query, comprising:
- extracting information from an updated text source based on a predefined grammar, wherein said predefined grammar is based on one or more topics and objects;
- and
- creating a stored indexed text corpus adapted to permit natural language querying.
Dependencies are inferred from the claim text.