In conventional techniques, types of attributes that can be distinguished are limited. An attribute deciding apparatus comprises: an operation pattern comparing unit that compares an operation history of a communication terminal with one or more predetermined operation patterns to decide, for each of the one or more operation patterns, at least either of an appearance frequency and an appearance probability in a predetermined period of time; and an attribute deciding unit that decides an attribute pattern conforming to an attribute of a user of the communication terminal from among one or more predetermined attribute patterns based on at least either of the appearance frequency and the appearance probability for each of the one or more operation patterns.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. An attribute deciding apparatus comprising: an operation pattern comparing unit that compares an operation history of a communication terminal with one or more predetermined operation patterns to decide, for each of the one or more operation patterns, at least either of an appearance frequency and an appearance probability in a predetermined period of time; and an attribute deciding unit that decides an attribute pattern conforming to an attribute of a user of the communication terminal from among one or more predetermined attribute patterns based on at least either of the appearance frequency and the appearance probability for each of the one or more operation patterns. 2. The attribute deciding apparatus according to claim 1, further comprising a movement pattern comparing unit that compares a movement history of a communication terminal with one or more predetermined movement patterns to decide, for each of the one or more movement patterns, an appearance frequency or an appearance probability in a predetermined period of time, wherein the attribute deciding unit decides an attribute pattern conforming to an attribute of a user of the communication terminal from among one or more predetermined attribute patterns based on at least either of the appearance frequency and the appearance probability for each of the one or more operation patterns and on at least either of the appearance frequency and the appearance probability for each of the one or more movement patterns. 3. An attribute deciding apparatus comprising: a movement pattern comparing unit that compares a movement history of a communication terminal with one or more predetermined movement patterns to decide, for each of the one or more movement patterns, an appearance frequency or an appearance probability in a predetermined period of time; and an attribute deciding unit that decides an attribute pattern conforming to an attribute of a user of the communication terminal from among one or more predetermined attribute patterns based on at least either of the appearance frequency and the appearance probability for each of the one or more movement patterns. 4. A communication terminal comprising: the attribute deciding apparatus according to claim 1; and an appearance information storing unit that stores therein at least either of the appearance frequency and the appearance probability. 5. The communication terminal according to claim 4, further comprising an attribute information storing unit that stores therein an attribute pattern decided as conforming to an attribute of a user of the communication terminal by the attribute deciding unit. 6. A communication terminal comprising: the attribute deciding apparatus according to claim 3; and an appearance information storing unit that stores therein at least either of the appearance frequency and the appearance probability. 7. The communication terminal according to claim 6, further comprising an attribute information storing unit that stores therein an attribute pattern decided as conforming to an attribute of a user of the communication terminal by the attribute deciding unit. 8. An attribute deciding method comprising: comparing a movement history of a communication terminal with one or more predetermined movement patterns to decide, for each of the one or more movement patterns, an appearance frequency or an appearance probability in a predetermined period of time; and deciding an attribute pattern conforming to an attribute of a user of the communication terminal from among one or more predetermined attribute patterns based on at least either of the appearance frequency and the appearance probability for each of the one or more movement patterns. 9. A computer-readable medium having stored thereon a program for causing a computer to function as the attribute deciding apparatus according to claim 1. 10. A computer-readable medium having stored thereon a program for causing a computer to function as the attribute deciding apparatus according to claim 3.