1. An information processing system comprising: a sensor for measuring the human acceleration produced by human movement for a predetermined time period; a processing part for obtaining feature data related to the speed of human movement based on the measured acceleration data; and a storage part for storing the obtained feature data, wherein the processing part includes: obtaining the speed of movement per predetermined unit time from the acceleration data measured by the sensor; counting the speed of movement above a reference value, from the obtained speed of movement per unit time, with respect to each of a plurality of reference values of the speed of movement, as the cumulative frequency for the reference value of the speed of movement; and obtaining statistical data based on the distribution between the reference values of the speed of movement, and the log of the cumulative frequency for the reference values, as the feature data of human movement, and storing the feature data in the storage part.