Xavier Messeguer


Multiple Sequence Alignment for Characterizing the Lineal Structure of Revision
Laura Alonso | Irene Castellón | Jordi Escribano | Xavier Messeguer | Lluís Padró
Proceedings of the Fourth International Conference on Language Resources and Evaluation (LREC’04)

We present a first approach to the application of a data mining technique, Multiple Sequence Alignment, to the systematization of a polemic aspect of discourse, namely, the expression of contrast, concession, counterargument and semantically similar discursive relations. The representation of the phenomena under study is carried out by very simple techniques, mostly pattern-matching, but the results allow to drive insightful conclusions on the organization of this aspect of discourse: equivalence classes of discourse markers are established, and systematic patterns are discovered, which will be applied in enhancing a discursive parser.