Evaluation device

An evaluation device comprising:

• a preference trend storage unit configured to store trend information for each of a plurality of users, indicating a trend in a preference for content in each of a plurality of time periods and for each type of content;
• a score calculation unit configured to calculate a recommendation score for each of a plurality of pieces of content with respect to a recommendation target user;
• a classification unit configured to cluster a group of users having trend information similar to that of the recommendation target user on the basis of the trend information for each of the plurality of users stored in the preference trend storage unit;
• a derivation unit configured to derive an overall trend of the trend information of affiliated users belonging to the group of users clustered by the classification unit as overall trend information on the basis of the trend information of the affiliated users;
• a score adjustment unit configured to adjust the recommendation score for each of the plurality of pieces of content in reflection of the overall trend information of the type of content to which the plurality of pieces of content belong in the target time period in the recommendation score for each of the plurality of pieces of content calculated by the score calculation unit;
• and
• a determination unit configured to determine content to recommend to the target user with respect to the target time period on the basis of the recommendation score for each of the plurality of pieces of content adjusted by the score adjustment unit.