This book constitutes the refereed proceedings of the 4th International Conference, EsTAL 2004, held in Alicante, Spain in October 2004.

The 42 revised full papers presented were carefully reviewed and selected from 72 submissions. The papers address current issues in computational linguistics and monolingual and multilingual intelligent language processing and applications, in particular written language analysis and generation; pragmatics, discourse, semantics, syntax, and morphology; lexical resources; word sense disambiguation; linguistic, mathematical, and morphology; lexical resources; word sense disambiguation; linguistic, mathematical, and psychological models of language; knowledge acquisition and representation; corpus-based and statistical language modeling; machine translation and translation tools; and computational lexicography; information retrieval; extraction and question answering; automatic summarization; document categorization; natural language interfaces; and dialogue systems and evaluation of systems.