Abstract: An exercise rating and improvement system comprising: a feature amount extraction unit for extracting, from information obtained from a subject, a feature amount about exercise efficiency; an rating unit for rating exercise efficiency of the subject by comparing the extracted feature amount and a feature amount to be compared; and an improvement information providing unit for providing, on the basis of the rating result, information such that the feature amount of the subject approaches the feature amount to be compared.

Abstract: An exercise rating and improvement system comprising: a feature amount extraction unit for extracting, from information obtained from a subject, a feature amount about exercise efficiency; an rating unit for rating exercise efficiency of the subject by comparing the extracted feature amount and a feature amount to be compared; and an improvement information providing unit for providing, on the basis of the rating result, information such that the feature amount of the subject approaches the feature amount to be compared.

Abstract: Provided is a distance measuring apparatus, including an information acquisition unit that acquires information output from a second device that is attached to a target site for which a distance between a reference site and the target site is to be measured and acquires sound wave or radio wave output from a first device that is attached to the reference site and outputs sound wave or radio wave and information relating to an output of a first device; and a distance acquisition unit that acquires a distance between the first device and the second device on the basis of the acquired information.