Multiagent systems and data mining have emerged as two of the most vigorous areas for building intelligent information technology. This book presents the synergy between these fields, along with the methodologies, techniques, algorithms, and systems that integrate these technologies. It highlights the effectiveness and power of agent-driven data mining algorithms in designing intelligent data mining methods, data mining-driven agent intelligence enhancement, and mutual challenges faced by both communities. Detailed case studies demonstrate the mutual enhancement of the integration while the impact of new problems and challenges shows future trends in information technology as a whole.