Representation classification device, representation classification method, dissatisfaction detection device and complaints detection method

Expression classifier, the data corresponding to the voice of the conversation, the section detection unit for detecting a specific representation section including the specific expression that may be used in several nuances, for a particular expression section detected by the section detecting unit, prosodic features and a feature extraction unit for extracting feature information including at least one of the speech timing feature, by using the feature information extracted by the feature extraction unit, a specific representation contained in the specific expression period, the usage situation in the conversation a classification unit which classifies by corresponding nuances, a.