[Corpora-List] Morpho Challenge 2009 Workshop: Call for participation

[Mikko.Kurimo at hut.fi]

[Apologies for cross-posting]

Call for Participation: Unsupervised Morpheme Analysis -- Morpho  
Challenge 2009 Workshop

In conjunction with: CLEF 2009 (Cross-Language Evaluation Forum)
30 September - 2 October, 2009
Corfu, Greece

http://www.cis.hut.fi/morphochallenge2009/

Chair: Mikko Kurimo (Helsinki University of Technology)

Morpho Challenge 2009 is part of the EU Network of Excellence PASCAL
Challenge Program and is organized in collaboration with CLEF.

*** Topic of the Challenge and Workshop ***

The objective of the Challenge was to design a statistical machine
learning algorithm that discovers which morphemes (smallest
individually meaningful units of language) words consist of. Ideally,
these are basic vocabulary units suitable for different tasks, such as
text understanding, machine translation, information retrieval, and
statistical language modeling.

The scientific goals are:
      * To learn of the phenomena underlying word construction in
natural languages
      * To discover approaches suitable for a wide range of languages
      * To advance machine learning methodology

Morpho Challenge 2009 is a follow-up to our previous Morpho Challenge  
2005, 2007 and 2008. The task was again to find the morpheme analysis  
of the word forms in the given data sets.  For this challenge, new  
Machine Translation tasks were added (from Finnish to English and from  
German to English) to evaluate the performance of the morpheme analysis.

*** Competitions ***

The submitted algorithms were evaluated in three complementary ways:

      * Competition 1: The proposed morpheme analyses were compared to
a linguistic gold standard.
      * Competition 2: Information retrieval (IR) experiments were  
performed, where the words in the documents and queries were replaced  
by their proposed morpheme representations. The search is then based  
on morphemes instead of words.
      * Competition 3: Statistical machine translation (SMT)  
experiments were performed, where the word-based and morpheme-based  
translations were combined for better performance.

The details of the tasks, evaluation results, and the descriptions of  
the participating algorithms (accepted manuscripts) are available at  
the workshop home page:
http://www.cis.hut.fi/morphochallenge2009/

*** Morpho Challenge Programme in September 30 ***

     * 09:00 Opening
     * 09:10 Mikko Kurimo: Introduction
     * 09:20 Mikko Kurimo: Overview of Competition 1 - Comparison to  
Linguistic Morphemes
     * 09:40 Ville Turunen: Overview of Competition 2 - Information Retrieval
     * 09:50 Sami Virpioja: Overview of Competition 3 - Statistical  
Machine Translation
     * 10:00 Sami Virpioja: Unsupervised Morpheme Discovery with Allomorfessor
     * 10:15 Burcu Can: Unsupervised Learning of Morphology by using  
Syntactic Categories
     * 10:30 Sebastian Spiegler: PROMODES: A probabilistic generative  
model for word decomposition
     * 10:45 Sebastian Spiegler (co-author of Bruno Golenia): UNGRADE:  
UNsupervised GRAph DEcomposition
     * 10:55 break
     * 11:05 Jean-François Lavallée: Morphological acquisition by  
Formal Analogy
     * 11:20 Constantine Lignos: A Rule-Based Unsupervised Morphology  
Learning Framework
     * 11:35 Christian Monson: Probabilistic ParaMor
     * 11:50 Tzvetan Tchoukalov: Multiple Sequence Alignment for  
Morphology Induction
     * 12:05 James Currie: Powerful preprocessing for unsupervised  
morphoanalysis
     * 12:20 Discussions
     * 13:00 Conclusion

*** Further Information ***

The workshop will be held from 30 September to 2 October in Corfu,  
Greece in conjunction with CLEF 2009 (Cross-Language Evaluation Forum).
The actual Morpho Challenge part lasts only one day (Sep 30), but the  
same registration allows you to also participate in the other CLEF  
tracks that follow immediately.
Please note that you are not obliged to also attend ECDL but can  
register for the workshop only, if you prefer.
There is only a limited number of seats available, so please let us  
know asap, if you are coming to the workshop.

      Mikko Kurimo, Sami Virpioja and Ville Turunen
      Adaptive Informatics Research Centre, Helsinki University of Technology
      The organizers

http://www.cis.hut.fi/morphochallenge2009/




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