Ajou University Industry-Academic Cooperation Foundation

Sun Taag Choe

We Duke Cho

Kyu Pil Lee

Kyeong Chan Park

Jong Ik Lee

Disclosed are a method and an apparatus for calculating similarity of life log data, the method including: producing, by a life log data producing unit, a plurality of life log data on a daily basis, in which at least one estimated activity state is indicated for each predetermined time section, by matching a user's position information per time period and a user's motion state information per time period with an estimated activity table in which the user's estimated activity states are defined in advance; converting, by a modified life log data producing unit, the plurality of life logs data into a plurality of modified life log data which is indicated for each merged time section made by merging a preset number of continuous time sections; and calculating, by a similarity calculating unit, life log similarity among the plurality of modified life log data by comparing the plurality of modified life log data for each merged time section.

Method and apparatus for calculating similarity of life log data

Disclosed are a method and an apparatus for calculating a meal period, the method including: calculating, by a wrist acceleration calculating unit, a wrist acceleration variation value which is a variation value of acceleration in respect to a motion of a user's wrist which is measured based on gravitational acceleration; calculating, by a wrist angle calculating unit, a wrist angle variation value which is a variation value of an angle to the user's wrist based on a gravitational direction by using the wrist acceleration variation value; detecting, by an eating behavior candidate pattern detecting unit, an eating behavior candidate pattern based on a predetermined reference by applying one or more threshold values to the wrist angle variation value; and calculating, by a meal period calculating unit, a meal period based on the number of times the eating behavior candidate pattern occurs.

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Suwon-si, South Korea

Sun Taag Choe