Information processing device, information processing method, and program

An information processing method comprising:

• in one or more processors:
• acquiring, from a position sensor, an immediate movement history which comprises time series position data;
• receiving, from a memory, search data which comprises past time series position data;
• calculating a similarity, as a goodness of fit, between the immediate movement history and the past time series position data,
• wherein the goodness of fit is calculated based on distances between a first plurality of positions including a current position and at least one position preceding the current position in the immediate movement history and a second plurality of positions corresponding to the first plurality of positions in the past time series position data, and
• wherein the second plurality of positions are obtained by tracking back a number of positions from a predetermined position in the past time series position data;
• determining whether or not the goodness of fit calculated for the past time series position data and the immediate movement history is a predetermined threshold or more;
• and
• controlling an acquisition interval of the position sensor to acquire the time series position data according to the determination of the goodness of fit.

A non-transitory computer readable medium having stored thereon, a set of computer-executable instructions, for causing a computer to perform steps comprising:

• acquiring, from a position sensor, an immediate movement history which comprises time series position data;
• receiving, from a memory, search data which comprises past time series position data;
• calculating a similarity, as a goodness of fit, between the immediate movement history and the past time series position data,
• wherein the goodness of fit is calculated based on distances between a first plurality of positions including a current position and at least a position preceding the current position in the immediate movement history and a second plurality of positions corresponding to the first plurality of positions in the past time series position data, and
• wherein the second plurality of positions are obtained by tracking back a number of positions from a predetermined position in the past time series position data;
• determining whether or not the goodness of fit calculated for the past time series position data and the immediate movement history is a predetermined threshold or more;
• and
• controlling an acquisition interval of the position sensor to acquire the time series position data according to the determination result of the goodness of fit.