According to one aspect of an embodiment an estimation device includes a collecting unit that collects pieces of operation information that indicate operational statuses of electric devices, provided in a predetermined facility, and terminal information that is acquired by a terminal device of a user in the predetermined facility. The estimation device includes an estimating unit that estimates an action of a user in the predetermined facility based on the pieces of operation information and the terminal information.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. An estimation device comprising: a collecting unit that collects pieces of operation information that indicate operational statuses of electric devices, provided in a predetermined facility, and terminal information that is acquired by a terminal device of a user in the predetermined facility; and an estimating unit that estimates an action of a user in the predetermined facility based on the pieces of operation information and the terminal information. 2. The estimation device according to claim 1, wherein for each of the electric devices, the collecting unit collects operation information based on a current that is supplied to the electric device. 3. The estimation device according to claim 1, wherein the collecting unit collects, as the terminal information, at least any one of acceleration information, which indicates acceleration that is measured by the terminal device, and operation information that indicates a type of operation of the terminal device. 4. The estimation device according to claim 1, wherein the estimating unit estimates an action of a user in the predetermined facility in accordance with an association result of the action of the user, indicated by the terminal information, and the operational status of the electric device, indicated by the operation information. 5. The estimation device according to claim 1, wherein the collecting unit collects, as the terminal information, positional information that indicates a position of the terminal device, and the estimating unit estimates an action of a user in the predetermined facility based on the positional information on the terminal device, indicated by the terminal information, and the operational status of the electric device, indicated by the operation information. 6. The estimation device according to claim 1, comprising a learning unit that learns types of usage of electric devices in consideration of a chronological order based on pieces of operation information on the electric devices, wherein the estimating unit estimates an action of a user in the predetermined facility based on a learning result by the learning unit, the operation information, and the terminal information. 7. The estimation device according to claim 6, wherein the learning unit learns electric devices that are not used by an identical user at an identical time based on the pieces of operation information, and the estimating unit estimates an action of a user in the predetermined facility in accordance with a learning result by the learning unit. 8. The estimation device according to claim 6, wherein the learning unit learns electric devices that are used by an identical user at an identical time based on the pieces of operation information, and the estimating unit estimates an action of a user in the predetermined facility in accordance with a learning result by the learning unit. 9. The estimation device according to claim 1, wherein the collecting unit further collects terminal information that is acquired by the terminal device outside the predetermined facility, and the estimating unit estimates an action of a user in the predetermined facility based on terminal information, acquired by the terminal device outside the predetermined facility, and the operation information. 10. The estimation device according to claim 1, wherein the collecting unit collects, for each electric device, operation information based on sound information that is collected by the electric device. 11. An estimation method that is implemented by an estimation device, the estimation method comprising: collecting operation information that indicates an operational status of an electric device, provided in a predetermined facility, and terminal information that is acquired by a terminal device of a user in the predetermined facility; and estimating an action of a user in the predetermined facility and a user that has performed the action based on the operation information and the terminal information. 12. A non-transitory computer-readable recording medium having stored therein an estimation program that causes a computer to execute a process comprising: collecting operation information that indicates an operational status of an electric device, provided in a predetermined facility, and terminal information that is acquired by a terminal device of a user in the predetermined facility; and estimating an action of a user in the predetermined facility and a user that has performed the action based on the operation information and the terminal information.