Text search system
Patent 4823306 Issued on April 18, 1989. Estimated Expiration Date: 
August 14, 2007. 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.
August 14, 2007. 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 References 3400371 Method and apparatus for information storage and retrieval Method of entering criteria for selecting records of spatially related data stored in an interactive text processing system Method and system for information storing and retrieval using word stems and derivative pattern codes representing familes of affixes Patent #: 4775956 InventorsApplicationNo. 07/085110 filed on 08/14/1987US Classes:707/5Query augmenting and refining (e.g., inexact access)ExaminersPrimary: Heckler, Thomas M.Attorney, Agent or FirmInternational ClassG06F 17/30 (20060101)AbstractIn a searching for library documents that match the content of a given sequence of query words, a set of equivalent words are defined for each query word along with a corresponding word equivalence value assigned to each equivalent word. Target sequences of words in a library document which match the sequence of query words are located according to a set of matching criteria. The similarity value of each target sequence is evaluated as a function of the corresponding equivalence values of words included therein. Based upon the similarity values of its target sequences, a relevance factor is then obtained for each library document.Other References
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