Lluís Màrquez  <Home Page> Associate Professor Ph.D. in Computer Science

E-mail:    lluism at lsi.upc.edu / talp.upc.edu

Research

I am a member of the Artificial Intelligence Section of my department, and more specifically, I work in the Natural Language Processing Research Group (member of the TALP Research Center). My recent research has been focused on the application of Machine Learning (ML) techniques to Natural Language Processing (NLP) problems. My PhD thesis (July-99) is about the application of decision tree induction to the problem of Part-of-speech (POS) tagging.

My current interests are focused on:
       ML algorithms: Boosting, SVMs and margin-based classifiers, and decision trees.
       Solving structural and relational NLP problems by means of classifier combination
       Specific NLP problems: POS tagging, word sense disambiguation (WSD), text categorization, named entity extraction, shallow and full parsing, semantic role labeling.
       Specific NLP applications of interest: Statistical Machine Translation, (oral) Question Answering

Keywords: Artificial Intelligence, Natural Language Processing, Computational Linguistics, Natural Language Learning, Machine Learning, Boosting and  margin-based classifiers, Decision Trees.

        Publications
       Ph.D. Thesis

Current events
   Co-chair of the ACL'08 workshop Semantic Evaluations: Recent Achievements and Future Directions: The workshop has been cancelled
   Co-organizer of the CoNLL-2008 shared task "Joint Parsing of Syntactic and Semantic Dependencies", Manchester, UK, August 16-17, 2008: competition is now underway
   Guest Editor of the Special Issue on Computational Semantic Analysis of Language: SemEval-2007 and Beyond at Language Resources and Evaluation, together with Eneko Agirre and Richard Wicentowski: papers under reviewing
   Guest Editor of the Special Issue on Semantic Role Labeling at Computational Linguistics, together with Xavier Carreras, Ken Litkowski, and Suzanne Stevenson (see list of accepted papers). To be published as issue 34(2) in 2008

Recent past events

    I co-chaired the MATMT2008 workshop "Mixing Approaches to Machine Translation", Donostia-San Sebastian, February 14, 2008   
    I co-chaired with Richard Wicentowski and Eneko Agirre the SemEval-2007 evaluation exercise and workshop on semantic analysis
    I co-organized with M. Antònia Martí, Mariona Taulé (CLiC, UB) and Luis Villarejo the SemEval-2007 task on Multilevel Semantic Annotation of Catalan and Spanish (see the summary of results at the task webpage)
    I co-chaired with Dan Klein the tenth Conference on Computational Language Learning (a.k.a CoNLL-X), June 2006.
    I co-chaired with Xavier Carreras the CoNLL-2005 Shared Task competition on Semantic Role Labelling, July 2005.
    I co-chaired with Xavier Carreras the CoNLL-2004 Shared Task Competition on Semantic Role Labelling, May 2004.
    I coordinated the organization of the Senseval-3 "lexical sample" tasks on Catalan and Spanish WSD, July 2004.
    Mini-symposium on Structural Inference & Learning with Constraints at CCG, UIUC, June 2004

Current Ph.D. students
    Jesús Giménez (LSI, UPC)
    Luis Villarejo (LSI, UPC)
    Pere R. Comas (LSI, UPC). Co-advisor: Jordi Turmo (LSI, UPC)
    Co-advisor of Beñat Zapirain (UPV/EHU). Advisor: Eneko Agirre (UPV/EHU)
    (seminar with PhD students)

Former Ph.D. students
    Gerard Escudero (LSI, UPC): graduated in July 2006; Co-advisor German Rigau (UPV/EHU)
    Xavier Carreras (LSI, UPC): graduated in October 2005; Currently at CSAIL, MIT.
    Antoni Oliver (Universitat de Barcelona): graduated in July 2004; Currently at UPF; Co-advisor Irene Castellón (UB)

Courses at the AI master

Post-graduate courses

Under-graduate courses

    Academic course 2007/08 (Fall semester)

    Academic course 2006/07 (Spring semester)

    Introducció a la lògica - IL  (web de IL a la FIB)
      Office hours: Wednesdays 13-14 and 15-16; Fridays 12-13


MELP Summer School
  Course 2002/03 (Barcelona, July 2003): Machine Learning for Natural Language Processing