Abstract: In an information processing apparatus, an extracting unit extracts a feature quantity from a subject content. A detecting unit detects from the second content a similar portion where a degree of coincidence between each feature quantity extracted from the second content and the feature quantity included in the key information is higher than a first threshold value, and outputs range information specifying a range of the similar portion. A correspondence generating unit retrieves the similar portion included in the range indicated by the detected range information, and generates correspondence information associating the retrieved similar portion with the key information. A presenting unit presents the key information selectably based on the correspondence information.

Abstract: An apparatus includes unit acquiring speaker information including a first duration of a speaker and a name specified by name specifying information used to indicate a name, and acquiring the first duration as a first period, unit acquiring a second period including an utterance, unit extracting, if the second period is included in the first period, a first amount that characterizes a speaker, and associating the first amount with a name corresponding to the first period, unit creating speaker models from amounts, unit acquiring, from the content information, a third duration as an duration to be recognized, unit extracting, if the second period is included in the third period, a second amount that characterizes a speaker, unit calculating degrees of similarity between amounts of speaker models and the second amount, and unit recognizing a name of a speaker model which satisfies a set condition of the degrees as a performer.

Abstract: In an information processing apparatus, an extracting unit extracts a feature quantity from a subject content. A detecting unit detects from the second content a similar portion where a degree of coincidence between each feature quantity extracted from the second content and the feature quantity included in the key information is higher than a first threshold value, and outputs range information specifying a range of the similar portion. A correspondence generating unit retrieves the similar portion included in the range indicated by the detected range information, and generates correspondence information associating the retrieved similar portion with the key information. A presenting unit presents the key information selectably based on the correspondence information.

Abstract: A content search device includes a content obtaining unit which obtains a content; an attribute information obtaining unit which obtains attribute information about the content; a search key storing unit which stores a search key and the attribute information about the content associated with the search key; a search key deciding unit which collates the obtained attribute information with the attribute information stored associated with the stored search key and decides a search key for use in search; and a search unit which searches the content by using the decided search key.