Abstract: An EoD system for personal living activities. A current electric power value is received from a smart tap, a use state q of an appliance is estimated from the current electric power value, change of the use state is detected as an event when the use state is different from a use state of a previous time, and the type of the event and an occurrence time are stored in a memory. Following that, a first weight of the living activity by the type of the event is calculated based on an appliance function model and an elapsed time from the event occurrence time, and a second weight to each living activity corresponding to the current use state of the appliance is acquired from an appliance function model. Based on the product that is a multiplication of the first weight and the second weight, a sum of the products is calculated for each appliance, and a living activity label, in which the sum of the product values of each appliance becomes a maximum value, is estimated as a living activity label of a time.