| 摘要 |
PROBLEM TO BE SOLVED: To extract a compound word formed by the partial word element of a word even when the word composed of plural partial word elements is registered in a dictionary, and to prevent meaningless word generation. SOLUTION: The word registered in a morpheme analytic dictionary is provided with a word composition information indicating the composition of partial word elements, and the inhibiting information for inhibiting the formation of a specific word from the partial word elements. When the word is extracted from a retrieving key document and a retrieving document in reference to the morpheme analytic dictionary (D11, D12), the partial words are acquired on the basis of the word composition information, and the compound word composed of the combination of less than the predetermined number of partial word elements is formed on the basis of the acquired partial word elements (D13-15). The specific word is eliminated from the compound word on the basis of the inhibiting information (D16).
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