An acquiring unit includes a first acquiring unit, a second acquiring unit, and an extracting unit. The first acquiring unit acquires first data from contract data indicating a contract. The second acquiring unit acquires, from an information source other than contract data, second data different from the first data by using the first data acquired by the first acquiring unit. The extracting unit extracts features of the contract from first data acquired by the first acquiring unit and second data acquired by the second acquiring unit. The features include at least second data. A calculating unit calculates an evaluation value of the contract according to a user, by using the features of the contract acquired by the acquiring unit and a calculation criterion read from a calculation criterion DB.