An information processing device includes: a relation information storage unit 11 which stores information indicating relations, each being a relation between a success rate of accomplishing an aimed purpose by a pair of persons or things and attributes of each of the persons or things; and a proposal unit 12 which proposes to change at least some of attributes of at least one of persons or things composing a new pair, based on the information stored in the relation information storage unit.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. An information processing device comprising: a relation information storage unit which stores information indicating relations, each being a relation between a success rate of accomplishing an aimed purpose by a pair of persons or things and attributes of each of the persons or things; and a proposal unit which proposes to change at least some of attributes of at least one of persons or things composing a new pair, based on the information stored in the relation information storage unit. 2. The information processing device according to claim 1, wherein the proposal unit presents, as a proposal of a change, a change of at least one attribute included in the attributes of the at least one of the pair and the modified success rate estimated based on the information stored in the relation information storage unit. 3. The information processing device according to claim 1, wherein the proposal unit proposes the change for improving the success rate of the pair of a first user and a second user who meets a condition designated by the first user, the change being a change of at least some of attributes of the first user. 4. The information processing device according to claim 1, wherein the proposal unit proposes the change for improving the success rate of the pair of a first user and a second user, the change being a change of at least one attribute that is included in the attributes of the second user and matches a condition designated by the first user. 5. The information processing device according to claim 1, wherein the proposal unit proposes the change for improving the success rate of the new pair, the change being a change of at least one attribute that is included in the attributes of the at least one of the pair and designated as a changeable attribute. 6. The information processing device according to claim 1, wherein the proposal unit includes: a success rate estimation unit which, when a set of attributes is input, estimates the success rate of accomplishing the purpose resulted from the set of attributes, based on the input set of attributes and the information stored in the relation information storage unit; a simulation unit which, upon receiving designation of a pair of specific persons or things, changes at least some of attributes of at least one of the persons or things of the designated pair, to analyze changed success rates associated with the change of the attributes; and an analysis unit which identifies, based on analysis by the simulation unit, one or more attributes to be changed among the set of attributes, modified attribute or attributes, or a contribution of the change to improvement of the success rate, which improves the success rate of the designated pair. 7. The information processing device according to claim 6, wherein the simulation unit determines a plurality of success rates regarding respective pairs, the device further comprising a candidate selection unit which, based on a desired condition designated by a first person or thing for attribute of a second person or thing, decreases a number of pairs for which the changed success rate are determined respectively. 8. The information processing device according to claim 1, further comprising a learning unit which machine-learns the relations, each being a relation between the success rate of accomplishing an aimed purpose by any pair of persons or things and attributes of each of the persons or things, using, as learning data, a set of attributes of persons or things of each pair for which a success or failure of the purpose is determinable. 9. A success support system comprising: a learning unit which machine-learns relations, each being a relation between a success rate of accomplishing an aimed purpose by any pair of persons or things and attributes of each of the persons or things, using, as learning data, a set of attributes of persons or things of each pair for which a success or failure of the purpose is determinable; a simulation unit which, upon receiving designation of a pair of specific persons or things, analyzes changed the success rates while changing at least some of attributes of at least one of the persons or things of the designated pair, using a result of the learning by the learning unit; and a display unit which displays at least: a result of analysis by the simulation unit; and/or modified attribute or attributes among the set of attributes or a contribution of the change to improvement of the success rate identified by the result, which improves the success rate of the designated pair. 10. A success support method comprising proposing, by an information processing device, based on information that is stored in a predetermined storage unit and indicates relations, each being a relation between a success rate of accomplishing an aimed purpose of persons or things and attributes of each of the persons or things, a change of at least some of attributes of at least one of persons or things.