GEMS 2010
GEometrical Models of Natural Language Semantics
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ACL 2010 Workshop
GEMS-10 : GEometrical Models of Natural Language Semantics
Second Edition
Uppsala, Sweden; July 16, 2010


**** Submission Deadline: April 12, 2010 ****

NEW --> invited speaker : Katrin Erk, University of Texas at Austin
NEW --> submission deadline extended : April 12, 2010

Distributional models and semantic spaces represent a core topic in
contemporary computational linguistics for their impact on advanced tasks and
on other knowledge fields (such as social science and the humanities).
Semantic spaces based on simple contextual units have been early used in
information retrieval. Later on, more linguistically principled spaces have
been introduced for large-scale natural language learning problems, such as the
acquisition of lexical taxonomies, word sense discrimination, pattern
acquisition and conceptual clustering. More recently, specialized
distributional models have been successfully applied to solve complex NLP tasks
such as question answering, textual entailment and sentiment analysis.

The goal of GEMS-2010, is to consolidate the experience of the first GEMS
workshop, held at EACL in 2009. GEMS aims to stimulate research on semantic
spaces and distributional methods for NLP, push for an interdisciplinary view,
and amplify exchange of ideas, results and resources among often independent

In particular, the workshop aims at gathering contemporary contributions to
large scale problems in meaning representation, acquisition and use, based on
distributional and vector space models. The workshop aims also to shed
new light on the use of such techniques on complex linguistic tasks,
such as linguistic knowledge acquisition, semantic role labeling,
textual entailment recognition, question answering, document
understanding/summarization and ontology learning.

In this second edition, GEMS will broaden its focus to practical and industrial
applications of distributional models. Many Web-companies such as Microsoft,
Google and Yahoo! have in the last years embraced and effectively integrated in
their infrastructure, semantic processors for computing distributional
similarity among entities, queries, web pages and user-click-patterns. The
workshop will aim at stimulating interactions between the academic and the
corporate research sectors, and in discussing how far and in which way,
distributional techniques are applied in Web Search.


We invite submissions on any topic of current interest related to the
application of semantic spaces to NLP and related disciplines, such as:

- Unsupervised Learning through document-based, collocational and syntagmatic spaces
- Supervised Learning and Word Spaces
- From Unsupervised to Semi-supervised Learning in vector spaces
- Eigenvector methods and Geometrical Embeddings
- Higher order tensors and Quantum Logic extensions
- Feature engineering in machine learning models
- Computational complexity and evaluation issues
- Graph-based models over semantic spaces
- Logic and inference in semantic spaces
- Psychological and cognitive theories of semantic space models
- Applications in the humanities and social sciences
- Large-scale implementations of distributional models (e.g. Map-Reduce)
- Applications and impact on Web search, Web mining, Query log mining, etc.

We also especially encourage submissions on the empirical evaluation of the
above computational models within the following NLP tasks:

- Word sense disambiguation and discrimination
- Induction of Selectional preferences
- Acquisition of lexicons and linguistic patterns
- Conceptual clustering
- Kernels methods for NLP
- Modeling of linguistic theories and ontological knowledge
- Manifold learning for NLP
- Transfer learning for NLP
- Quantitative extensions of Formal Concept Analysis


Authors are invited to submit papers on original, unpublished work in the
topic area of this workshop. In addition to long papers presenting completed
work, we also invite short papers and demos:

- Long papers should present completed work and should not exceed 8 pages.
- Short papers/demos can present work in progress or the description of
a system, and should not exceed 5 pages.

One more page is eventually allowed for bibliographic references only.
As reviewing will be blind, please ensure that papers are anonymous. The
papers should not include the authors' names and affiliations or any
references to web sites, project names etc. revealing the authors' identity.
Self-references that reveal the author's identity, e.g., "We previously
showed (Smith, 1991) ...", should be avoided. Each submission will be
reviewed by at least two members of the program committee. Accepted papers
will be published in the workshop proceedings.

Submission must conform to the official ACL style guidelines. For details,
please refer to:
Submission will be electronic, via the Web-service at:
Please consult the Workshop web page for more details.


Submission deadline: April 12, 2010
Notification of acceptance: May 12, 2010
Camera-ready papers due: June 1, 2010
Workshop: July 16, 2010


- Roberto Basili, University of Roma Tor Vergata, Italy
- Marco Pennacchiotti, Yahoo Labs, Sunnyvale, USA.


- Enrique Alfonseca, Google Research, US
- Marco Baroni, University of Trento, Italy
- Paul Buitelaar, National University of Ireland, Ireland
- John A. Bullinaria, University of Birmingham, UK
- Carlotta Domeniconi, George Mason University, US
- Katrin Erk, University of Texas, US
- Stefan Evert, University of Osnabruck, Germany
- Alfio Massimiliano Gliozzo, STLab - ISTC - CNR, Italy
- Gregory Grefenstette, Exalead S.A., France
- Alpa Jain, Yahoo Labs, US
- Alessandro Lenci, University of Pisa, Italy
- Alessandro Moschitti, University of Trento, Italy
- Sebastian Pado, Stuttgart University, Germany
- Ted Pedersen, University of Minnesota, US
- Yves Peirsman, University of Leuven, Belgium
- Ana-Maria Popescu, Yahoo Labs, US
- Magnus Sahlgren, Swedish institute of Computer Science, Sweden
- Sabine Schulte imWalde, University of Stuttgart, Germany
- Hristo Tanev, Yahoo UK, UK
- Tim Van de Cruys, University of Groningen, The Netherlands
- Peter D. Turney, National Research Council Canada, Canada
- Yorick Wilks, University of Sheffield, UK
- Fabio Massimo Zanzotto, University of Roma Tor Vergata, Italy


Roberto Basili
Department of Computer Science
University of Roma Tor Vergata

Marco Pennacchiotti
Yahoo! Inc.
Sunnyvale, CA