Criteria for naturalness in conceptual spaces

Abstract Conceptual spaces are a frequently applied framework for representing concepts. One of its central aims is to find criteria what makes concept natural. A prominent demand that natural concepts cover convex regions in conceptual spaces. The first aim this paper analyse the convexity thesis and arguments have been advanced favour or against it. Based on this, I argue most supporting focus single-domain (e.g., colours, smells, shapes). Unfortunately, these not primary examples Building observation, second develop multi-domain representation such has two main aspects: features associated with probabilistic correlation pattern which captures. spaces, together considerations, provide helpful approach aspects. With respect feature representation, existence characteristic (i.e., apples specific taste) essential. Moreover, capture peaks distribution over complex They carve up nature at joints, is, areas no low density. This last aspect shown be closely related demand.