[Corpora-List] job: Postdoc, INRIA Rennes, France, structured CRF

[Vincent Claveau]

POSTDOCTORAL POSITION at INRIA Rennes, France

Topic: Conditional Random Fields for structured annotation


In the field of natural language processing, statistical methods have 
become very popular thanks to their efficiency in dealing with noisy 
inputs (e.g., automatic speech transcripts, blog, tweets). In the 
particular case of sequence labeling problems, such as named entities 
recognition (discovery of person names, places, dates, etc. within a 
text), the Conditional Random Fields (CRF) model is particularly effective .

CRFs are currently limited to model unstructured sequences (flat 
representation), while one of the current problems is to predict 
structured sequences (tree-structured for example). Methods for modeling 
such structured sequences exist, like Probabilistic Context Free 
Grammars (PCFG), but their effectiveness is limited when confronted with 
noisy input as we are aiming to process.

The proposed work is to study a method for predicting sequences of 
structured objects robust to handle noisy inputs. This method will 
provide a decomposition of the overall problem into sub-problems modeled 
by CRF and redial the different results to produce a structured output. 
Evaluation will be performed on noisy texts (speech transcripts, tweets...).

This work takes place in the context of the Quaero project, funded by 
the French National Innovation Agency (www.quaero.org).
The work will be performed at IRISA/INRIA Rennes, France 
(http://www.irisa.fr/, http://www.inria.fr/centre/rennes/). The 
candidate will integrate the TexMex team, whose main research topics 
include large-scale multimedia indexing, speech processing, information 
retrieval.

QUALIFICATIONS AND POSITION

The successful candidate will have a PhD with a track record of 
Text-Mining or Machine Learning for Natural Language Processing 
research. Fluency in English is mandatory.

This position is to be filled as early as possible, and will end on the 
31st of Dec 2013. Salary follows INRIA scales and depends on the 
candidate's experience (the minimum monthly net salary is about 1900 €).

To apply, please send a cover letter, describing how the applicant's 
knowledge and research background will contribute to the project, a CV, 
and the names and contact information of two referees to:

Christian Raymond (christian.raymond at irisa.fr)

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