Patent ID: 8700554

Claim:
An information presentation apparatus which presents an item to a user, comprising: at least one hardware electronic device configured to effect: a user action history database which accumulates a history of an item used by the user; an item database which accumulates a plurality of sets of an item and a keyword describing each item; a degree-of-preference calculation unit which uses the user action history database and the item database, to thereby calculate a degree to which the user is interested in each item, as a degree of preference; a degree-of-unexpectedness calculation unit which uses a reciprocal of a degree of co-occurrence between keywords accumulated in the item database, to thereby calculate a degree of unexpectedness of each item; an integrated processing unit which processes in an integrated manner the degree of preference and the degree of unexpectedness, to thereby calculate a recommendation score of each item accumulated in the item database; a presentation information decision unit which uses the recommendation score calculated by the integrated processing unit, to thereby decide information of an item to be presented; and an information communication unit which performs information communication with a terminal, wherein the information of the item decided by the presentation information decision unit is transmitted from the information communication unit to the terminal.