SPOKEN LANGUAGE UNDERSTANDING: A SURVEY Renato De Mori LIA-BP 1228-84911 Avignon CEDEX 9 (France) A survey of research on spoken language understanding is presented. It covers aspects of knowledge representation, automatic interpretation strategies, semantic grammars, conceptual language models, semantic event detection, shallow semantic parsing, semantic classification, semantic confidence, active learning Index Terms-- Spoken language understanding, conceptual language models, spoken conceptual constituent detection, stochastic semantic grammars, semantic confidence measures, active learning.