Data base retrieval system utilizing stored vicinity feature valves
First Claim
1. A method for retrieving information from data records of a search object of a data base in response to an input search key, the method comprising the steps of:
- storing vicinity feature values of the data records, said vicinity feature values indicating a correspondence between data characters of the data records;
obtaining matching degrees for the data records indicating a degree of correspondence between the stored vicinity feature values of the data records and a vicinity feature value of the search key, the vicinity feature value of the search key indicating a correspondence between data characters of the search key; and
providing as search results of the information retrieving method data record numbers and corresponding matching degrees for the data records.
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Accused Products
Abstract
A data base retrieval system includes a memory for storing vicinity feature values of data records as search (or retrieval) objects of the data records. The vicinity feature values indicate a correspondence between data characters of the data records which are in the same vicinity. A searching device obtains matching degrees between a vicinity feature value of a search (or retrieval) key and the vicinity feature values of the search objects of the data records. Data record numbers are output arranged in a descending order of the matching degrees. Since phase information of data (position information indicating the position of a search key in a record) as a factor for prolonging the search time upon execution of full-record direct searching is abstracted by a vicinity feature value calculation, a high-speed and fuzzy searching operation can be performed so that the search time depends only on the length of the search key information, and does not depend on the volume of data.
24 Citations
39 Claims
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1. A method for retrieving information from data records of a search object of a data base in response to an input search key, the method comprising the steps of:
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storing vicinity feature values of the data records, said vicinity feature values indicating a correspondence between data characters of the data records; obtaining matching degrees for the data records indicating a degree of correspondence between the stored vicinity feature values of the data records and a vicinity feature value of the search key, the vicinity feature value of the search key indicating a correspondence between data characters of the search key; and providing as search results of the information retrieving method data record numbers and corresponding matching degrees for the data records. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A data base retrieval system for retrieving information from data records of a search object of a data base in response to an input search key, said system comprising:
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first means for storing vicinity feature values of the data records, said vicinity feature values indicating a correspondence between data characters of the data records; and second means for obtaining matching degrees for the data records indicating a degree of correspondence between the data record vicinity feature values stored in said first means and a vicinity feature value of the search key, said vicinity feature value of the search key indicating a correspondence between data characters of the search key, and for providing as search results of said data base retrieval system data record numbers and corresponding matching degrees for the data records. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification