The application of quantitative and technology oriented methodologies in urban planning and urban studies has been reducing substantially in recent years. Planning Schools have reduced their teaching commitment in quantitative and qualitative methodologies; congress tracks dedicated to new tech. and planning are disappearing or are underrepresented. This comes at a time when the complexity paradigm is gaining ground in urban scholarship and with it, a growing understanding that we need new models - theoretical and operational - to help us understand urban and regional dynamics. This workshop brings together researchers in planning, spatial modelling and related fields, particularly Ph.D. students, to share ideas and help recreate a community in which these ideas can flourish. The workshop will offer grad students and established urban researchers a chance to discuss in depth the potential of computational technologies such as GA, CA, or other modelling approaches, as well as it will set the basis for an in-depth discussion of the importance of quantitative and qualitative-quantitative approaches to the Education, Research and Practice of Planning.