It is our pleasure to present to you the Proceedings of AIAI 2007, the 4th IFIP Conference on Artificial Intelligence Applications & Innovations being held from 19* till 21'''of September, in Peania, Athens, GREECE. Relying on a solid theoretical background and exploiting the outcomes of exhaustive research efforts, artificial intelligence technology has been widely applied to various areas aiming at the development of intelligent systems that resemble to an extent human thinking and decision-making. These efforts are supported by the ever-expanding abundance of information and computing...

It is our pleasure to present to you the Proceedings of AIAI 2007, the 4th IFIP Conference on Artificial Intelligence Applications & Innovations being held from 19* till 21'''of September, in Peania, Athens, GREECE. Relying on a solid theoretical background and exploiting the outcomes of exhaustive research efforts, artificial intelligence technology has been widely applied to various areas aiming at the development of intelligent systems that resemble to an extent human thinking and decision-making. These efforts are supported by the ever-expanding abundance of information and computing...