RECOMMENDATION CONDITION CORRECTION DEVICE, RECOMMENDATION CONDITION CORRECTION METHOD, AND RECOMMENDATION CONDITION CORRECTION PROGRAM

摘要

Provided is a device capable of effectively correcting a recommendation condition. The device stores recommendation conditions specifying a range of values of attributes of user contexts, and for each user for whom recommendation information has been output, stores a recommendation history including a value of each attribute of the context of the user and success/failure information indicating whether or not the user has taken a predetermined action, and for each user for whom success has been achieved, stores the value of each attribute of the context of the user. In addition, the device calculates, for each value of each attribute included in contexts of all recommendation history entries, a ratio of the recommendation history entries indicating that a predetermined action has been taken among the recommendation history entries for which the attribute of the context is that value, and for each attribute within the recommendation condition, the ratio of successful history entries for which the value of the attribute of the context matches the recommendation condition among the successful history entries. The device corrects the recommendation conditions on the basis of both ratios.