Planning This book stems from a Research Project financed by the Italian Ministry of University and Scientific Research (MIUR) which has been carried out in the period 1999-2002. The Project, entitled "Knowledge Engineering in Planning Process" was aimed at developing Artificial Intelligent technologies in analysis, project and evaluation in territorial planning. This approach, which has recently been defined "Geocomputation" in the scientific literature, constitutes an emerging paradigm in territorial sciences. The final research results were presented in a workshop which took place in Milan in November 2001. In addition to the parties of the project, the meeting hosted speakers internationally well known as the cutting edge of researchers in the field. Among them: Mike Batty (Centre for Advanced Spatial Analysis (CASA)-UCL- London), Dino Borri (Polytechnic of Bari), Chris Webster (Cardiff University), Kai Nagel (Computer Science Institut- Zurich), Katerina Hlavackova-Schindler (Vienna University of Economic and Business Administration), Lena Sanders - CNRS, Paris, Paul Torrence CASA-UCL London. The book collects the proceedings of this concluding workshop.