INFORMATION RETRIEVAL DEVICE AND INFORMATION RETRIEVAL METHOD
First Claim
1. An information retrieval device for retrieving information related to a word, the information retrieval device comprising:
- an input unit for inputting a word;
a pattern generation unit which, upon input of a new word after input of a given number of words, generates a word group in a case of adding the new word to a previously input word and a word group in a case of replacing a previously input word with the new word;
an occurrence information derivation unit which, for each of the word groups generated, derives occurrence information corresponding to a probability of occurrence of the word group; and
a determination unit which determines a word group to be used in new retrieval, based on the derived occurrence information.
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Abstract
An information retrieval device for retrieving information related to a word includes: an input unit for inputting a word; a pattern generation unit which, upon input of a new word after input of a given number of words, generates a word group in a case of adding the new word to a previously input word and a word group in a case of replacing a previously input word with the new word; an occurrence information derivation unit which, for each of the word groups generated, derives occurrence information corresponding to a probability of occurrence of the word group; and a determination unit which determines a word group to be used in new retrieval, based on the derived occurrence information.
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9 Claims
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1. An information retrieval device for retrieving information related to a word, the information retrieval device comprising:
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an input unit for inputting a word; a pattern generation unit which, upon input of a new word after input of a given number of words, generates a word group in a case of adding the new word to a previously input word and a word group in a case of replacing a previously input word with the new word; an occurrence information derivation unit which, for each of the word groups generated, derives occurrence information corresponding to a probability of occurrence of the word group; and a determination unit which determines a word group to be used in new retrieval, based on the derived occurrence information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An information retrieval method for retrieving information related to a word, which is executed by an information retrieval device, the information retrieval method comprising:
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an input step for inputting a word; a pattern generation step of, upon input of a new word after input of a given number of words, generating a word group in a case of adding the new word to a previously input word and a word group in a case of replacing a previously input word with the new word; an occurrence information derivation step of, for each of the word groups generated, deriving occurrence information corresponding to a probability of occurrence of the word group; and a determination step of determining a word group to be used in new retrieval, based on the derived occurrence information.
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Specification