Abstract: An information processing device and a method for estimating a number of terminals, which can accurately count a number of mobile terminals in an analysis target region of which address attribute is an adjacent region, taking the intake phenomenon into account. A terminal counting portion counts numbers of first and second position information pieces. An intake coefficient calculation portion calculates an intake coefficient based on the numbers of position information pieces. An intaked terminal calculation portion calculates a number of intaked terminals based on the counted number of position information pieces at an analysis target time and the calculated intake coefficient, subtracts the number of intaked terminals from the number of position information pieces, and calculates an estimated number of mobile terminals.

Abstract: An information analysis device includes: a receiving unit for receiving a location registration signal including a sector ID, location registration time information and a user ID subjected to location registration; an extracting unit for extracting a location registration signal of which the location registration time is immediately preceding a target time and a location registration signal of which the location registration time is immediately following the target time, from the location registration signal for each user; and a population distribution calculation unit for calculating population distribution by sector at the target time based on location registration time information and a location corresponding to the sector ID in the location registration signal immediately preceding the target time for each user, location registration time information and a location corresponding to the sector ID in the location registration signal immediately following the target time for each user, and the target time.

Abstract: A number-of-terminals estimation device includes: a location data acquisition unit to acquire location data which are a collection of multiple pieces of location information including location registration information; a first presence count estimation unit to estimate a first presence count to be the number of terminals in observation area during observation period, based on the location data; a signal removal unit to extract location data in accordance with a type of location data from the location data; a second presence count estimation unit to estimate a second presence count to be the number of terminals in observation area during observation period, based on extracted location data; and a third presence count estimation unit to estimate a third presence count to be the number of terminals in observation area during observation period, based on one or both of first and second presence counts.