Information retrieval
First Claim
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1. A method of generating a concept dictionary for use in querying an information system comprising:
- (i) receiving an information search criterion;
(ii) deriving from said received search criterion, using a lexical reference source, at least one different search criterion having related meaning to said received search criterion;
(iii) identifying a set of information in said information system relevant to said received search criterion and a different set of information in said information system relevant to said at least one derived search criterion;
(iv) analyzing the identified sets of information and deriving from similarities and differences therebetween relationships between said received search criterion and said at least one derived search criterion in the context of said information system; and
(v) storing, in a concept dictionary, information relating to said received and said at least one derived search criterion and to respective said derived relationships therebetween, for use in querying said information system.
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Abstract
A concept dictionary is generated and/or updated in respect of an information system. The concept dictionary is used to assist in selecting queries and query terms for use in interrogating the information system. A lexical reference source is first used to generate queries semantically related to a query entered by a user, and the answers returned for each query are analyzed using a fuzzy processing technique to determine semantic relationships between the queries. The queries and the determined relationships are recorded in a concept dictionary for subsequent use.
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11 Claims
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1. A method of generating a concept dictionary for use in querying an information system comprising:
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(i) receiving an information search criterion; (ii) deriving from said received search criterion, using a lexical reference source, at least one different search criterion having related meaning to said received search criterion; (iii) identifying a set of information in said information system relevant to said received search criterion and a different set of information in said information system relevant to said at least one derived search criterion; (iv) analyzing the identified sets of information and deriving from similarities and differences therebetween relationships between said received search criterion and said at least one derived search criterion in the context of said information system; and (v) storing, in a concept dictionary, information relating to said received and said at least one derived search criterion and to respective said derived relationships therebetween, for use in querying said information system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An information retrieval apparatus for accessing sets of information stored in an information system, said apparatus comprising;
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an input for receiving an information search criterion; deriving means for deriving from said received search criterion, using a lexical reference source, at least one different search criterion having related meaning to said received information search criterion; retrieval means for identifying a set of information in said information system relevant to said received search criterion and a different set of information in said information system relevant to said at least one derived search criterion; analysis means (135) for an analyzing said identified sets of information and deriving from similarities and differences therebetween relationships between said received search criterion and said at least one derived search criterion in the context of said information system; and updating means for storing, in a concept dictionary, information relating to said received and said at least one derived search criterion and to respective said derived relationships therebetween, for use in querying said information system.
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Specification