| 摘要 |
PROBLEM TO BE SOLVED: To provide a document classification method, a document classification device, a program and a recording medium, capable of executing the learning without a side effect by avoiding a bad influence upon classification of a new document caused by the pulling of a document vector to an extreme direction characterizing a category when only one right classification destination can be selected. SOLUTION: In this method, a plurality of right answer categories are specified with the categories weighted (step S401), an effective word is extracted (step S402), belonging degrees to the unspecified categories are reduced (step S403), and belonging degrees to the specified categories are increased (step S405).
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