| 摘要 |
PROBLEM TO BE SOLVED: To efficiently extract metadata suited to searching for storage data from text information created by a user.SOLUTION: A server device 1 is provided with: information acquisition parts 13, 14 for acquiring generated time information and generated position information attached to storage data; information acquisition parts 15, 17 for acquiring time information and position information attached to a plurality of text information; a temporally similar information acquisition part 16 for identifying and acquiring text information attached with time information within a fixed time range with respect to the generated time information; a spatially similar information acquisition part 18 for identifying and acquiring text information attached with position information spatially relevant to the generated position information; and an important word extraction part 20 for extracting a plurality of important words attached with important values from the text information acquired by the temporally similar information acquisition part 16 and the spatially similar information acquisition part 18 and outputting the plurality of important words as candidates for metadata to be added to the storage data. |
