Abstract: In platform knowledge (110), a plurality of devices, a plurality of solutions by the plurality of devices, and a plurality of abstract concepts that associates the plurality of devices with the plurality of solutions, are indicated, and each device is correlated to one or more abstract concepts and each solution is correlated to one or more abstract concepts. In user knowledge (120), a user device which is used by a user, a user device solution by the user device, and a user device abstract concept which associates the user device with the user device solution, are indicated. A search unit (10) searches for at least one of: a device other than the user device, which is correlated to the user device abstract concept in the platform knowledge (110); and a solution other than the user device solution, which is correlated to the user device abstract concept in the platform knowledge (110).

Abstract: A similarity degree calculation device (1) includes a similarity degree calculation unit (19) and performs transfer learning with using a transfer source data candidate (2) and transfer destination data (3). The similarity degree calculation unit (19) finds a similarity degree between a transfer source data distribution and a transfer destination data distribution on a basis of a transfer source extremal value group and a transfer destination extremal value group. The transfer source extremal value group includes a transfer source extremal value indicating an extremal value of the transfer source data distribution indicating a distribution of a feature amount of the transfer source data candidate (2). The transfer destination extremal value group includes a transfer destination extremal value indicating an extremal value of the transfer destination data distribution indicating a distribution of a feature amount of the transfer destination data (3).

Abstract: A response depth control unit (104) acquires response depth which is a request for depth of a search by a semantic engine (105). Further, the response depth control unit (104) causes the semantic engine (105) to repeat the search until the depth of the search by the semantic engine (105) reaches the response depth.