This book constitutes the refereed proceedings of the 7th International Conference on Conceptual Structures, ICCS'99, held in Blacksburg, Virginia, USA in July 1999. The 34 revised full papers presented were carefully reviewed and selected for inclusion in the book. Also included is a 65 page proposed draft standard for conceptual graphs. The papers are organized in sections on conceptual graph modeling; natural language; applications; SISYPHUS-I, contexts, logics and conceptual graphs; and position papers.
