Ntt Docomo, Inc.

Naoki Yamamoto

Keiichi Ochiai

Yusuke Fukazawa

Takashi Hamatani

Akiya Inagaki

A server includes a first statistic processor configured to calculate, for each of different types of screens displayed on a display; a first statistic value of display time of a screen of each type display on the display, to generate first statistic values corresponding to the different types of screens; a first determiner configured to determine, for each type of the screens, whether a user is concentrating on a screen of each type, based on, from among the first statistic values, a first statistic value calculated for the screen of each type; and a generator configured to generate a list including screen identification information for identifying, from among the different types of screens, a type of screen for which a corresponding determination result from the first determiner is affirmative.

Information generation apparatus and control system

An information generation apparatus includes a feature information generator that generates feature information on transition to a first screen based on a log including a transition timepoint and identification information, the transition timepoint being a timepoint when a foreground screen transitioned from a second screen to the first screen among a plurality of screens displayed by a plurality of program modules that differ from each other, and the identification information identifying from among the program modules a first program module for displaying the first screen, an index value generator that generates an index value indicative of a degree to which the first screen draws attention from a user based on the feature information, and a determiner that determines based on the index value whether to use the identification information that identifies the first program module in a process of estimating the state of the user.

Information processing apparatus

A feature extraction device is a device that extracts a feature quantity to be input to a state estimation model for estimating a state related to a terminal where the activity is executed or a user of the terminal, which includes an acquisition unit that acquires activity history information indicating an execution history of the activity in a specified period of time and including time-series activity logs, an extraction unit that extracts co-occurrence relationship information indicating a co-occurrence relationship of activities in a specified period of time based on the activity history information, a generation unit that aggregates activity feature quantities indicating a feature of each activity based on the co-occurrence relationship information and generates an activity history feature quantity indicating a feature of the activity history information, and an output unit that outputs the activity history feature quantity as a feature quantity to be input to the state estimation model.

Feature extraction device and state estimation system

An aloneness estimation device estimating whether a user acts alone includes an operation state information acquisition unit configured to acquire operation state information indicating the user's operation state of a terminal per position, a criteria setting unit configured to set criteria for use in estimation in accordance with a position related to the acquired operation state information, an estimation unit configured to estimate whether the user acts alone from the operation state information acquired by the operation state information acquisition unit based on the set criteria, and an output unit configured to output information in accordance with estimation.

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Chiyoda-ku, Japan

Naoki Yamamoto