The three volume set LNAI 4251, LNAI 4252, and LNAI 4253 constitute the refereed proceedings of the 10th International Conference on Knowledge-Based Intelligent Information and Engineering Systems, KES 2006, held in Bournemouth, UK, in October 2006.

The 480 revised papers presented were carefully reviewed and selected from about 1400 submissions. The papers present a wealth of original research results from the field of intelligent information processing in the broadest sense.

The second volume is organized in topical sections on computational intelligence for signal and image processing, soft data analysis, immunity-based systems: immunoinformatics, ambient intelligence: algorithms, methods and applications, communicative intelligence 2006, knowledge-based systems for e-business, knowledge-based interface systems, nature inspired data mining, intelligent agents and their applications, AI for decision making, intelligent data processing in process systems and plants, skill acquisition and ubiquitous human computer interaction, IATA - intelligent agent technology and applications, computational intelligence approaches and methods for security engineering, hybrid information technology using computational intelligence, logic based intelligent information systems, knowledge-based mult-criteria decision support, neural information processing for data mining, sharing of learning knowledge in an information age, intelligent information management in a knowledge-based society, knowledge/software engineering aspects of intelligent systems applications, and intelligent databases in the virtual information community.