Session Description: The volume of available geographic data in various domains has increased dramatically due to the growing sophistication and ubiquity of geospatial technologies. Due to the size and complexity, effective analysis and use of these data demand innovative analytical approaches. Spatial data mining addresses this issue by focusing on the discovery, interpretation, and presentation of information embedded in very large and complex geographic data sets. This session includes research contributions in the theory, design, implementation, and application of data mining and exploratory data analysis techniques to spatial and spatio-temporal data.