Information retrieval system and method
August 14, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAssociative information retrieval continuously guided by search status feedback Office correspondence storage and retrieval system Method and system for matching encoded characters Directory lookup method and apparatus Digital data processing method and means for word classification by pattern analysis Method and means using digital data processing means for locating representations in a stored textual data base Locating digital coded words which are both acceptable misspellings and acceptable inflections of digital coded query words Keyword search automatic limiting method Indexing subject-locating method Patent #: 4580218 InventorApplicationNo. 393838 filed on 08/14/1989US Classes:707/1DATABASE OR FILE ACCESSINGExaminersPrimary: Chan, Eddie P.Assistant: Eakman, Christina M. Attorney, Agent or FirmForeign Patent References
International ClassG06F 015/40AbstractA computerized information retriveal system is formed of a textbase of texts of variable length and content. The texts are selected from the textbase on the basis of Boolean logic searches among keywords associated with the texts. When a group is retrieved from such a search, the system automatically segregates the texts based on the presence or absence of a criterion key keyword selected so as to segregate the texts into sub-groups. The same criterion key analysis can then be applied recursively to the sub-groups. The resulting sub-groups are then displayed to the user in a hierarchical display to illustrate the relationships amoung the texts. A string comparison routine is also disclosed to search for similar keywords.Other References
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