Constitutes the refereed proceedings of the 15th International Conference on Knowledge-Based Intelligent Information and Engineering Systems, KES 2011, held in Kaiserslautern, Germany, in September 2011. This title includes papers that are organized in topical sections on web intelligence, text and multimedia mining and retrieval, and more.

Constitutes the refereed proceedings of the 15th International Conference on Knowledge-Based Intelligent Information and Engineering Systems, KES 2011, held in Kaiserslautern, Germany, in September 2011. This title features the papers that are organized in topical sections on artificial neural networks, intelligent vision, and data mining.