The International Workshop on Advanced Computational Intelligence and Intelligent Informatics (IWACIII), honoring Prof. Kaoru Hirota on his 60th birthday, was held at the Tokyo Institute of Technology in November 2009. The workshop featured 8 invited talks and 30 papers published in IWACIII 2009 proceedings.

This special JACIII issue features 10 papers from these proceedings, dealing with data mining, robotics, fuzzy systems, signal and image processing, and industrial applications. A paper by Prof. Koczy was chosen as the best paper of this workshop.

This workshop is chaired by Professor Toshihiro Kaino, Professor Yasufumi Takama, and Professor Hajime Nobuhara. The workshop is sponsored by Fuji Technology Press Co., Ltd., Suzhou KTI Semiconductor Manufacturing Machine Co., Ltd., R&D Center of VEST, Mycom, Inc., Computing, Designing, and Integration Co., Ltd., Japan Association of Service Science (JASS), TOKYO TECH Pursuing Excellence, Hirota Laboratory, Tokyo Institute of Technology.

As guest editor of this special issue, we thank all of the contributors and referees for their fine work and candid reviews.

The second IWACIII will be held in 2011 in Suzhou, China. We invite you to submit your research papers and to plan to take participate in IWACIII 2011.