He has authored over 150 publications on international journals and congresses. He is the co-editor of two books. In particular, he has been active in the fields of document analysis and recognition, data mining and classification systems-based on both neural networks, and statistical learning paradigms. His current research interests include artificial vision, image processing, pattern recognition, automatic learning systems, techniques for automatic segmentation and classification of on-line and off-line cursive handwriting, classifier combination paradigms, and automatic learning methods-based on the use of evolutionary algorithms and Bayesian networks. Recently, writing analysis techniques have been applied to the early detection of cognitive disorders. He is a member of the IAPR. He is a member of the Board of Directors of the National Interuniversity Consortium for Computer Science. He is the President of the International Graphonomics Society (IGS). He is a guest editor of several special issues of international journals. He is an Associate Editor of Pattern Recognition Letters journal.