|発明の名称||USER ACTION OPTIMIZATION DEVICE AND METHOD|
PROBLEM TO BE SOLVED: To provide a user action optimization device and method for maximizing a user satisfaction average value in progressive download type video services.
SOLUTION: A model of a user is generated from a given precondition, "status" information and a utility function representing satisfaction determined from KPI and KQI, the satisfaction of the user is calculated in the case where control rules are implemented using the model of the user, the KQI and the utility function, and an average value of the satisfaction is stored in maximum average utility storage means as a value of average utility. When a calculation control rule is given, control rule calculation means transfers the calculation control rule to the average utility calculation means, and a value of average utility in the calculation control rule is calculated using the average utility calculation means, and compared with the value of the average utility up to the moment stored in the maximum average utility storage means. A greater average utility value and the control rule are held in the maximum average utility storage means and finally, the control rule held in the maximum average utility storage means is outputted as an optimal control rule.
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