The 4th International Conference on HYBRID ARTIFICIAL INTELLIGENCE SYSTEMS was held in Salamanca, Spain between 10th and 12th of June, 2009.

Accepted papers included in HAIS 2009 proceedings are published by Springer Velag in Volume 5272 in its series of Lecture Notes in Artificial Intelligence - LNAI (part of its prestigious Lecture Notes in Computer Science - LNCS).

The 3rd International Workshop on HYBRID ARTIFICIAL INTELLIGENCE SYSTEMS was held in Burgos, Spain between 24th and 26th of September, 2008.

Accepted papers included in HAIS 2008 proceedings are published by Springer Velag in Volume 5271 in its series of Lecture Notes in Artificial Intelligence - LNAI (part of its prestigious Lecture Notes in Computer Science - LNCS).

The 2nd International Workshop on HYBRID ARTIFICIAL INTELLIGENCE SYSTEMS was organized under the frame of the Conferencia de la Asociación Española para la Inteligencia Artificial (CAEPIA). It was held in Salamanca, Spain the 12th and 13th of November, 2007.

Accepted papers included in HAIS 2007 proceedings are published by Springer Verlag in the Volume 44 (Innovations in Hybrid Intelligent Systems) of the prestigious Advances in Soft Computing Series.

The 1st International Workshop on HYBRID ARTIFICIAL INTELLIGENCE SYSTEMS was organized under the frame of the International Joint Conference IBERAMIA/SBIA/SBRN 2006. It was held in Ribeirão Preto, SP (Brazil) the 27th of October, 2006.