| 摘要 |
PROBLEM TO BE SOLVED: To rank documents based on a criterion associated with volume and density of topics of the documents. SOLUTION: In a step S1, document input process is carried out for inputting documents. In a step S2, using a document database 11, morpheme analysis process is carried out for extracting morphemes from the documents. In a step S3, a simple sentence extraction process is carried out for extracting simple sentences from the documents. In a step S4, simple sentence similarity calculation process is carried out for calculating similarity between the simple sentences extracted by the simple sentence extraction process. In a step S5, using the document database 11, similar simple sentence concatenation set extraction process is carried out for extracting similar simple sentence concatenation set groups based on a similarity relationship between the simple sentences and appearance positional information of the simple sentences inside the documents. In a step S6, an inter-document score calculation processing is carried out for calculating a score of the document based on the extracted similar simple sentence concatenation set groups, and then, the processes are finished. COPYRIGHT: (C)2008,JPO&INPIT
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