Intelligent Agent Ontologies and Environments -- Intelligent Multimedia Solutions and the Security in the Next Generation Mobile Networks -- Intelligent E-Mail Analysis, News Extraction and Web Mining -- Semantic Integration and Ontologies -- Computer Vision, Image Processing and Retrieval -- Communicative Intelligence II -- Approaches and Methods to Security Engineering V -- Multimedia Retrieval II -- Multimedia Compression -- Multimedia Signal Processing -- Emergence and Self-organisation in Complex Systems -- Soft Computing Techniques and Their Applications III -- Information Engineering and Ubiquitous Computing -- Location and Context-Based Systems -- e-Based Systems in Education, Commerce and Health -- Computational Biology and Bioinformatics -- Complex Adaptive Systems -- Communicative Intelligent III -- Speech Processing and Robotics -- Data Mining and Soft Computing Applications I -- Multimedia Security and Stegnography -- Stegnography -- Soft Computing Approach to Industrial Engineering II -- Medical Text Mining and Natural Language Processing -- Knowledge Based Intelligent Systems for Health Care -- Intelligent Learning Environment -- Intelligent Data Analysis and Applications.Dear delegates,friendsand membersofthe growingKES professionalcommunity,w- come to the proceedings of the 9th International Conference on Knowledge-Based and IntelligentInformationandEngineeringSystemshostedbyLa TrobeUniversityin M- bourne Australia. The KES conference series has been established for almost a decade, and it cont- ues each year to attract participants from all geographical areas of the world, including Europe, the Americas, Australasia and the Paci?c Rim. The KES conferences cover a wide range of intelligent systems topics. The broad focus of the conference series is the theory and applications of intelligent systems. From a pure research ?eld, intel- gent systems have advanced to the point where their abilities have been incorporated into many business and engineering application areas. KES 2005 provided a valuable mechanism for delegates to obtain an extensive view of the latest research into a range of intelligent-systems algorithms, tools and techniques. The conference also gave de- gates the chance to come into contact with those applying intelligent systems in diverse commercial areas. The combination of theory and practice represented a unique opp- tunity to gain an appreciation of the full spectrum of leading-edge intelligent-systems activity. The papers for KES 2005 were either submitted to invited sessions, chaired and organized by respected experts in their ?elds, or to a general session, managed by an extensive International Program Committee, or to the Intelligent Information Hiding and Multimedia Signal Processing (IIHMSP) Workshop, managed by an International Workshop Technical Committee.