Abstract: An artificial intelligence voice interactive system may provide various services to a user in response to a voice command. The system may perform at least one of: receiving user speech from a user; transmitting the received user speech to the central server; receiving at least one of control signals and audio and video answers, which are generated based on an analysis and interpretation result of the user speech, from at least one of the central server, the internal service servers, and the external service servers; and outputting the received audio and video answers through at least one of speakers and a display coupled to the user interactive device and controlling at least one device according to the control signals.

Abstract: An artificial intelligence voice interactive system may provide various services to a user in response to a voice command.

Abstract: In one example, a content theme recommendation system may include a content recommendation server configured to: generate a plurality of themes with respect to multiple contents, calculate similarities between the plurality of themes, collect content viewing logs for one or more of the multiple contents from a user device, convert the content viewing logs into theme viewing logs based on metadata for the plurality of themes, and provide one or more recommended theme to the user device based on the theme viewing logs and the similarities between the plurality of themes; and the user device configured to receive one or more recommended theme from the content recommendation server.