Patent Document ID: 20150142140
Application ID: 14543015
Patent Flag: 0

Claim One:
1. An in-home-presence probability calculation method used in an in-home-presence probability calculation system that provides information as to whether or not a person is at home, the in-home-presence probability calculation method comprising: receiving operation information on a device arranged in a home via a network every time a certain operation is performed for the device; specifying operation times at which the certain operation has been performed, in accordance with the received operation information; receiving, every time a state is entered in which it is expected that no one is at home, time information of a time at which the state has been entered; specifying in-home-absence times at which a state has been entered in which it is expected that no one is at home, in accordance with the received time information; specifying a correlation between a set including the specified operation times and a set including the specified in-home-absence times; receiving specification of a time from a device that uses the in-home-presence probability calculation system; calculating, when a specified operation time among the specified operation times is a time within a period of a certain time ending at the time at which the specification has been received, a probability that a person is at home at the specified time on the basis of the specified operation time and the specified correlation; and outputting the information as to whether or not a person is at home to the device that uses the in-home-presence probability calculation system on the basis of the calculated probability.