Conceptual Graphs and Formal Concept Analysis have in common basic concerns: the focus on conceptual structures, the use of diagrams for supporting communication, the orientation byPeircès Prag-matism, and the aim of representing and processing knowledge. These concerns open rich possibilities of interplay and integration. We discuss the philosophical foundations of both disciplines, and analyz...

While conceptual analysis is traditionally seen as a prototypical armchair, or a priori, project, this view has come under fire from a number of directions. Externalists have claimed that important facts about natural kind terms (among others) are a posteriori (Kripke, 1972). Others have argued that conceptual analysis must be informed by empirical findings on how concepts are structured in our...