Abstract: An inference device includes a knowledge base unit that stores a knowledge base for inferring answers to requests; an information acquisition unit that acquires situation information that is information including a user request or a request from a user and response information including a user's response to an inference result or a result of inference; an inference unit that uses the knowledge base to make inferences for a user request included in the situation information; an information output unit that outputs an inference result; a feedback information extraction unit that specifies a desired result or a result desired by the user for the user request from the response information; and an update unit that updates the knowledge base such that the desired result more likely matches the inference result.

Abstract: A passenger state determining unit (12) determines whether a passenger is sleeping, the passenger being a person riding in a vehicle other than a driver. An operation performing unit (20) performs drowsiness prevention operation for preventing the driver from feeling drowsy, when it is determined by the passenger state determining unit (12) that the passenger is sleeping.

Abstract: The present invention relates to a vehicle group management apparatus, a vehicle group management method, and a vehicle group management program that manage a plurality of vehicles moving in line as a vehicle group, and the vehicle group management apparatus includes: a first management unit to manage vehicle information including position information indicating positions of a plurality of other-vehicles moving in line; and a calculation unit to calculate vehicle group information indicating the vehicle group including at least one of the other-vehicles, using a distance between other-vehicles based on the position information and a movement characteristic of an own-vehicle. Therefore, it is possible to provide an appropriate vehicle group in accordance with each vehicle.

Abstract: An object image extraction unit (110) extracts, from a photographed image of ahead of a vehicle, an extracted object image matching an extraction condition among a plurality of object images. A display allocation area specifying unit (130) specifies in the photographed image, an area that does not overlap any extracted object image and that is in contact with any extracted object image, as a display allocation area of guidance information, and identifies an adjacent extracted object image that is in contact with the display allocation area and a tangent of the adjacent extracted object image to the display allocation area. An object space coordinate calculation unit (140) calculates a three-dimensional space coordinate of an object of the adjacent extracted object image, as an object space coordinate.

Abstract: A wireless communication apparatus which performs wireless communication with onboard information equipment installed in a vehicle includes: receiver that receives media data from the onboard information equipment; playback processing unit that outputs the media data the receiver receives; communication state retaining unit that retains a communication state between the onboard information equipment and wireless communication apparatus; usage situation deciding unit that decides a usage situation of the wireless communication apparatus from the vehicle surrounding information and generates usage situation information; quality deciding unit that decides the quality of the media data using communication state information retained in the communication state retaining unit and the usage situation information generated by the usage situation deciding unit; and transmitter that transmits the quality generated by the quality deciding unit to the onboard information equipment as media data quality information.

Abstract: A wireless communication apparatus which performs wireless communication with onboard information equipment installed in a vehicle includes: receiver that receives media data from the onboard information equipment; playback processing unit that outputs the media data the receiver receives; communication state retaining unit that retains a communication state between the onboard information equipment and wireless communication apparatus; usage situation deciding unit that decides a usage situation of the wireless communication apparatus from the vehicle surrounding information and generates usage situation information; quality deciding unit that decides the quality of the media data using communication state information retained in the communication state retaining unit and the usage situation information generated by the usage situation deciding unit; and transmitter that transmits the quality generated by the quality deciding unit to the onboard information equipment as media data quality information.