A document information management device or the like is obtained which is capable of effectively performing search for documents by utilizing attribute-related information for document information management. The device includes a document information management device for managing document information, which comprises a document-related information management section that analyzes, acquires and manages relevance information between documents as the document information, and an attribute-related information management section that analyzes, acquires and manages relevance information between attributes of the documents as the document information.
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