Patent ID: 7810020

Claim:
An information retrieval system comprising: an information extracting apparatus that extracts episodic information on each participant of a plurality of participants of a conference from a sound and an image, both of which are captured and stored during the conference, the extracted episodic information being specific to each participant of the plurality of participants of the conference, the captured image including an image of the participants of the conference; an information storage portion that stores the extracted episodic information associated with personal information related to each participant, the personal information being obtained from the conference that a system user attended; and an information retrieval portion that retrieves the personal information stored in associated with the extracted episodic information based on any of the extracted episodic information that the system user inputs, wherein the extracted episodic information includes number of conversation times, number of remark times, total conference conversation period, average conference conversation period, total conference remark period, average conference remark period, seat distance in conference, average distance in conference, total number of conversation times, average number of conversation times, total conversation period, average total conversation period, average conversation period, total number of remark times, average number of remark times, total remark period, average total remark period, average remark period, average seat distance, and average distance.