Advances in Natural Language Processing 4th International Conference, EsTAL 2004, Alicante, Spain, October 20-22, 2004. Proceedings - Vicedo, José Luis; Vicedo, José Luis; Martínez-Barco, Particio; Martínez-Barco, Particio; Munoz, Rafael; Munoz, Rafael; Saiz Noeda, Maximiliano; Saiz Noeda, Maximiliano (Springer Berlin Heidelberg : Imprint: Springer, 2004)