PhD position at LIG research lab, Grenoble, France
PhD student position
Location: Laboratoire d’Informatique de Grenoble
http://lig.imag.fr/
Group: Multimedia Information Modeling and Retrieval
http://mrim.imag.fr/
Funding: 36-month fix term contract, about 1380 Euros net per month.
Application deadline: 30 September 2009.
Starting date: 1st November or 1st December 2009.
Supervisors: Georges Quénot (Researcher at CNRS)
Philippe Mulhem (Researcher at CNRS)
Contact: Georges.Quenot@imag.fr, Philippe.Mulhem@imag.fr.
Title: Using context for semantic indexing of image and video documents
The automated document indexing image and video is a difficult problem
because of the “distance” between the arrays of numbers encoding these
documents and the concepts (e.g. people, places, events or objects)
with which we wish to annotate them. Methods exist for this but their
results are far from satisfactory in terms of generality and accuracy.
They generally operate by supervised or semi-supervised learning: the
system learns to recognize concepts from positive and negative examples;
it “generalizes” from these examples. Existing methods typically use a
single set of such examples and consider it as uniform. This is not
optimal because the same concept may appear in various contexts and its
appearance may be very different depending upon these contexts. The
context may be: the type of broadcast (television news, fiction,
entertainment, advertising, etc.), Date, place, country or culture of
broadcasting or production, or the modalities present or absent (for
documents in black and white and / or without sound, for instance).
The context may generally be regarded as another concept or as a set
of other concepts. The concepts and relations between them can be
represented in ontologies. One can interpret the relationship within
an ontology like the fact that the elements are likely to be together
or not in an image or a in a video shot and this information can be
used for their automatic annotation.
The proposed subject concerns the use of the context to improve the
performance of classifiers. The main idea is to consider, for each
concept to be recognized, a number of contexts in which it may appear
and to train a classifier for each of these contexts. During the
recognition, the appropriate classifier is used according to the
identified context. Alternatively, a weighted combination (fusion)
of classification results can be used if we only have probabilities
of being in a given context. Such an approach presents several
difficulties. The first one is the identification of context during
the recognition: in some cases, it may be known explicitly (from
metadata, for example) but, in general, it is actually another
concept, which also has to be recognized. The second difficulty is
the need for a very important total volume of training data so that,
for each context, there are enough examples to properly train a
classifier. There is a complexity that is related to simultaneously
manage the tuning of multiple classifiers for each concept. The
third difficulty concerns the problem of merging the outputs of
different classifiers in the frequent case in which there are
uncertainties about the context actually present during the
recognition. Implementation will possibly be based on the use of
network operators (extractors of features, classifiers and merge
modules), of ontologies to manage relationships between concepts
and of active learning for automatic training data collection.
The developed methods will be evaluated in the context of national
and international campaigns like TRECVID
(http://www-nlpir.nist.gov/projects/trecvid/). The work will be
done in the context of the Quaero program (http://www. quaero.org).
This will, among other things, give access to a large volume of
annotated image and video data.
http://mrim.imag.fr/georges.quenot/postes/These-Quaero-2-FR.pdf
http://mrim.imag.fr/georges.quenot/postes/These-Quaero-2-EN.pdf
Scholarship Tags: PhD Scholarships
Scholarship Search
Important: Scholarship-Positions.com is not responsible for the content of any external websites linked to or referenced on this site.
Browse Scholarships
- Africa Scholarships
- Australia Scholarships
- Austria Scholarships
- Belgium Scholarships
- Canada Scholarships
- China Scholarships
- Denmark Scholarships
- France Scholarships
Recent USA Scholarships
The AIA Society Outreach Grant Program at Archaeological Institute of America, 2012 USA The Archaeology of Portugal Fellowship for International Students at AIA, 2012 USA 2013 Teaching Excellence and Achievement Program, USA International Leaders in Education Program for Indian Teachers, 2013 USA 2012-2013 Kathern F. Gruber Scholarship and Thomas H. Miller Awards, USARecent UK Scholarships
Kingston University Undergraduate International Scholarships, 2012 UK Overseas Research Scholarship (ORS) for Non-EU Applicants at University of York, 2012 UK Scholarship for Overseas Students (SOS) at University of York, 2012 UK Kingston University International Postgraduate Scholarships, 2012 UK 2012 Donner Scholarship at University of Cambridge, UKRecent Germany Scholarships
CGS Interantional Scholarships for Doctoral Program at University of Cologne, 2012 Germany Max F. Perutz International PhD Programme in Chromosome Dynamics, 2012 Germany PhD Positions in NanoBioTechnology at Center for NanoScience LMU, 2012 Germany PhD in Life Sciences at The International Giessen Graduate School for the Life Sciences, Germany Germany Postgraduate Training Program – 2012 Cycle (PhD studies in Germany)Recent India Scholarships
Kingston University Postgraduate Scholarships for Indian Students, 2012 UK 2013 Teaching Excellence and Achievement Program, USA Fulbright Foreign Language Teaching Assistant Program for Indian, 2013 USA 2013 Fulbright-Nehru Senior Research Fellowships for Indians, USA 2013-2014 Fulbright Teacher Exchange Program for US and Indian Students, USA and IndiaWomen Scholarships
Sloan MSc Women’s Scholarship at London Business School, 2013 UK 2012-2013The Saint Paul College Club, Inc. AAUW Undergraduate Scholarship, USA 2012 L’Oréal Canada for Women in Science Research Excellence Fellowships, Canada 2012 Gertrude M. Cox Scholarship at American Statistical Association to Study in USA, Canada 2012 Women in Games Scholarship at Vancouver Film School, CanadaAfrica Scholarships
2012-2013 South Africa Investec Scholarship for MBA Students, UK 2012-2013 Mandela Magdalene College Scholarship for South Africa, UK 2012 Call for Proposals: Grant Awards for Global Environmental Change Research, Africa CARTA Call for Applications for PhD Fellowships 2012-2013, Africa Africa Biosciences Challenge Fund Research Fellowship, 2012 AfricaScholarship Blog
Useful Links
Search in Worldwide UniversitiesOxford Laboratory Technology
Search Courses in Indian Universities
IndiaJobs.co.in, India Jobs Employment, Recruitment, Careers, Interview
Teaching, Professor Jobs in India
GRE Prep and Free Courses