Professeur agrégé / Associate Professor
Coordonnées / Contact Info:
Téléphone / Telephone:
Intelligence artificielle, la vision par ordinateur, la reconnaissance de formes et l'apprentissage automatique avec des applications à l'infographie, l'analyse du langage naturel et l'exploration des données.
Artificial Intelligence, Computer vision and pattern recognition, computational photography, natural language processing, statistical machine learning and applications to human computer interaction.
Nouvelles / News
Je suis en congé sabbatique pour 2015. Cependant, j'ai quelques ouvertures pour des nouveaux étudiants aux cycles supérieurs et pour des chercheurs postdoctoraux.
I am on sabbatical for 2015. However, I have a number of openings for PhD students and postdocs.
I am looking for new PhD students and postdocs interested in research at the intersection of Deep Learning, Computer Vision, Natural Language Understanding and Artificial Intelligence involving: convolutional neural networks for video, automatically describing video using natural language, medical image analysis and bioinformatics - among a few other themes and projects. Many of these projects will be in collaboration with the Montréal Institute for Learning Algorithms (MILA). If you are interested in applying or would like more information, please contact me at the address above.
Recherche récente / Recent Research
Using Descriptive Video Services to Create a Large Data Source for Video Annotation Research [arxiv] Atousa Torabi, Christopher Pal, Hugo Larochelle and Aaron Courville, arXiv, 2015
Describing Videos by Exploiting Temporal Structure [arxiv] Li Yao, Atousa Torabi, Kyunghyun Cho, Nicolas Ballas, Christopher Pal, Hugo Larochelle and Aaron Courville, arXiv, 2015
Ibrahim, M., Pal, C., and Pesant, G. (2015) Exploiting Determinism to Scale Relational Inference, To appear in the proceedings of AAAI 2015.
Rim, D., Hasan, M.K., Puech, F., and Pal, C. (2015) Learning from Weakly Labeled Faces and Video in the Wild, Pattern Recognition, Vol. 48, Issue 3, Pages 759-771.
Axel Davy, Mohammad Havaei, David Warde-Farley, Antoine Biard, Lam Tran, Pierre-Marc Jodoin, Aaron Courville, Hugo Larochelle, Chris Pal, and Yoshua Bengio (2014) Brain Tumor Segmentation with Deep Neural Networks. In the BRATS 2014 workshop at MICCAI 2014. The poster for this work is also available here.
Kahou, S.E., Froumenty, P. and Pal, C. (2014) Facial Expression Analysis Based on High Dimensional Binary Features. In proceedings of the ECCV 2014 workshop on computer vision with local binary patterns. Note: this paper received the best paper award.
Hasan, Md. K. and Pal, C. (2014) Experiments on Visual Information Extraction with the Faces of Wikipedia. In the Proceedings of AAAI 2014. Please see the project webpage if you wish to use the data.
Kahou, S. E., Pal, C., Bouthillier, X., Froumenty, P., Gülçehre, Ç., *, Memisevic, R., Vincent, P., Courville, A. and Bengio, Y. (2013) Combining Modality Specific Deep Neural Networks for Emotion Recognition in Video. In Proceedings of the 15th ACM International Conference on Multimodal Interaction (ICMI '13) pp. 543-550. [ACM digital library definitive version].
*Note: Please see the additional authors section in the .pdf of the paper above for the full author list. Additional authors should be inserted at the *. (This paper describes our winning entry to the ICMI 2013 Grand Challenge on Emotion Recognition in the Wild. The challenge baseline accuracy was 27.5% - our approach yielded 41.0%)
Enseignement / Teaching
Hiver 2014, INF 8225 - Intelligence artificielle : techniques probabilistes et d'apprentissage
Automne 2013, INF 8702 - Infographie avancée (Advanced Computer Graphics)
Automne 2013, INF 1005A - Programmation procédurale
Hiver 2013, INF 8225 - Intelligence artificielle : techniques probabilistes et d'apprentissage
Hiver 2013, INF 1005A - Programmation procédurale
Automne 2012, INF 8702 - Infographie avancée (Advanced Computer Graphics)
Hiver 2012, INF 8225 - Intelligence artificielle : techniques probabilistes et d'apprentissage
Automne 2011, INF 1005A - Programmation procédurale
Automne 2011, INF 8702 - Infographie avancée (Advanced Computer Graphics)
Hiver 2011, INF 8953A - Intelligence artificielle : concepts et applications
Automne 2010, INF 8702 - Infographie avancée (Advanced Computer Graphics)
Hiver 2010, INF 4215 - Introduction à l'intelligence artificielle (Intro. AI)
Automne 2009, INF 8702 - Infographie avancée (Advanced Computer Graphics)
Hiver 2009, INF 6953E - Multimedia Data Analysis and Processing
Winter (Rochester) 2008, CSC 577 - Seminar in AI: Advanced Topics in Pattern Recognition
Fall (Rochester) 2007, CSC 290A - Topics in CS: Computational Photography and Video
Bhole, Chetan and Pal, Christopher and Rim, David and Wismüller, Axel (2013) 3D segmentation of abdominal CT imagery with graphical models, conditional random fields and learning. Machine Vision and Applications, pp. 1-25 (Springer Online First Article).
Messing, R., Torabi, A., Courville, A. and Pal, C. (2013) Evaluating and Extending Trajectory Features for Activity Recognition. Invited book chapter (to appear).
Hasan, M.K. and Pal, C. (2012) Creating a Big Data Resource from the Faces of Wikipedia. In the proceedings of BigVision 2012 (NIPS Workshop).
Bhole, C. and Pal, C. (2012) Automated Person Segmentation in Videos In the proceedings of ICPR 2012.
Pal, C., Weinmann, J.J., Tran, L.C., and Scharstein, D. (2012) On Learning Conditional Random Fields for Stereo : Exploring Model Structures and Approximate Inference International Journal of Computer Vision (IJCV). [IJCV Online link], vol. 99, no. 99, pp. 319-337.
Tran, L.C., Bal, C. Pal, C. and Nguyen, T.Q. (2012) On consistent inter-view synthesis for autostereoscopic displays. 3D Research, vol. 3, no. 1, pp. 1-10.
Rim, D., Hasan, K. and Pal, C. (2011) Semi Supervised Learning for Wild Faces and Video. In Proc. BMVC.
Wei, B. and Pal, C. (2011) Heterogeneous Transfer Learning with RBMs. In Proc. AAAI.
Bhole, C., Morsillo, N. and Pal, C. (2011) 3D Segmentation in CT Imagery with Conditional Random Fields and Histograms of Oriented Gradients. In the Second International Workshop on Machine Learning in Medical Imaging (MLMI), held in conjunction with MICCAI 2011.
Hasan, K. M. and Pal, C. (2011) Improving Alignment of Faces for Recognition. IEEE Symposium on Robotic and Sensors Environments (ROSE).
Tran, L. Khoshabeh, R., Jain, A., Pal, C. and Nguyen, T. (2011) Spatially Consistent View Synthesis with Coordinate Alignment. In Proc. IEEE ICASSP.
Jojic, N. and Pal, C. (2011) Interactive montages of sprites for indexing and summarizing video. US Patent 7,982,738.
Tram, L., Pal, C. and Nguyen, T.Q. (2010) View Synthesis Based on Conditional Random Fields and Graph-cuts In the proceedings of ICIP.
Morsillo, N., Mann, G., and Pal, C. (2010) YouTube Scale, Large Vocabulary Video Annotation. Book chapter to appear in Video Search and Mining, Springer-Verlag series on Studies in Computational Intelligence.
Wei, B. and Pal, C. (2010) Cross Lingual Adaptation: An Experiment on Sentiment Classifications. In the proceedings of the ACL.
Messing, R., Pal, C., and Kautz, H. (2009) Activity recognition using the velocity histories of tracked keypoints. In the proceedings of ICCV 2009. Note: our data and code can also be found on the [Project Page].
Morsillo, N., Pal, C. and Nelson, R. (2009) Semi-Supervised Learning of Visual Classifiers from Web Images and Text. In the proceedings of the International Joint Conference on Artificial Intelligence (IJCAI).
Chris Pal, Drew Steedly and Richard Szeliski. (2008) Video registration and image sequence stitching. US Patent 7,460,730.
Patrick Baudish, Chris Pal, Eric Rudolph, Drew Steedly, Richard Szeliski, Desney Tan and Matthew Uyttendaele. (2008) Real-time preview for panoramic images. US Patent 7,424,218 .
with Jerod Weinman and Lam Tran. (2008) Efficiently Learning Random Fields for Stereo Vision with Sparse Message Passing. In proc. European Conf. on Computer Vision (ECCV), Springer-Verlag LNCS, vol. 1, pp. 617-630.
with Gideon Mann and Richard Minerich. (2007) Putting Semantic Information Extraction on the Map: Noisy Label Models for Fact Extraction. In the proceedings of the AAAI Workshop on Information Integration on the Web (IIWeb 2007).
with Xuerui Wang and Andrew McCallum. (2007) Generalized Component Analysis for Text with Heterogeneous Attributes In the proceedings of Knowledge Discovery and Data Mining (KDD).
with Greg Druck, Jerry Zhu and Andrew McCallum. (2007) Semi-Supervised Classification with Hybrid Generative/Discriminative Methods. In the proceedings of Knowledge Discovery and Data Mining (KDD).
with Pallika Kanani and Andrew McCallum. (2007) Improving Author Coreference by Resource-bounded Information Gathering from the Web In the proceedings of the Twentieth International Joint Conference on Artificial Intelligence (IJCAI).
with Patrick Baudisch, Desney Tan, Drew Steedly, Eric Rudolph, Matt Uyttendaele and Richard Szeliski. (2006) An Exploration of User Interface Designs for Real-time Panoramic Photography. Australian Journal of Information Systems (AJIS), vol. 13, no. 2.
with Michael Kelm and Andrew McCallum. (2006) Combining Generative and Discriminative Methods for Pixel Classification with Multi-Conditional Learning In the proceedings of ICPR 2006. vol. 2 pp. 828-832. [BibTeX]
with Charles Sutton and Andrew McCallum. (2006) Sparse Forward-Backward using Minimum Divergence Beams for Fast Training of Conditional Random Fields. In the proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), vol. 5, pp. 581-584.[BibTeX]
with Andrew McCallum, Greg Druck and Xuerui Wang. (2006) Multi-Conditional Learning: Generative/Discriminative Training for Clustering and Classification In the proceedings of AAAI 2006.[BibTeX]
Pal, C. (2004) Probability Models for Information Processing and Machine Perception. PhD Thesis, University of Waterloo.
Pal, C. (2001) Probabilistic Models and Decision
. An Invited Tutorial Presented at the International Symposium for
Environmental Software Systems, ISESS 2001, Banff, Alberta, Canada,
May 22-25, 2001.
Pal, C. and Hu, M. (2001) Methodologies for Constructing and Training Large Hierarchical Hidden Markov Models for Sequence Analysis . Research in Computational Biology. RECOMB 2001. Abstract for Poster Presentation. April 22-25, 2001. Poster [here] in .pdf format (Note: you will need a recent version of Adobe Acrobat to view properly):
Pal, C. Swayne, D. and Frey, B. (2001) The Automated Extraction of Environmentally Relevant Features from Digital Imagery using Bayesian Multi-Resolution Analysis . Advances in Environmental Research. vol. 5, issue 4, pp 435-444.
Dorner, S. Swayne, D. A., Rudra, R. P., Pal, C., Newald, C. (2001) Integrating Parametric Uncertainty and Modelling Results into an Advisory System for Watershed Management . Advances in Environmental Research.. vol. 5, issue 4, pp. 445-451
Pal, C., Slaney, M. and Adams, R. (2000) Sound-based Event Control Using Timbral Analysis . United States Patent number: 6,054,646.
Dorner, S., Pal, C. and Swayne, D.A. (1999) Case Libraries and Information Theoretic Case Matching for Water Resource Management. Proceedings of ISESS 1999, The International Symposium on Environmental Software Systems .
Pal, C. (1998) A Technique for Illustrating Dynamic Component Level Interactions Within a Software Architecture . Proceedings of CASCON 1998. The IBM Centre for Advanced Studies Conference . pp. 134-146.
MacKenzie, I.S., Soukoreff, R.W. & Pal, C. (1997) A two ball mouse affords three degrees of freedom . Extended Abstracts of CHI 1997. The ACM Conference on Human Factors in Computing Systems , pp. 303-304. New York: ACM.
Conférences invitées / Selected Invited Talks
Jan. 2009, McGill University - Montreal
May 2008, University of Rochester - Computer Science Graduation Ceremony
Oct. 2007, Cornell - Bill and Melinda Gates Foundation Workshop
March 2007, Google
March 2007, MIT
Dec. 2006, Kodak Research
Dec. 2006, Michael Smith Genomic Sciences Centre - Vancouver
Nov. 2006, McGill University - Montreal
Sept. 2006, Invention to Venture - University of Massachusetts Business School, Guest Speaker
Sept. 2006, Advanced Invention to Venture - Massachusetts Biomedical Center, UMass Worcester
Sept. 2006, Canadian Independent Media Arts Alliance - National Conference Speaker
July 2006, Microsoft Research - Redmond, WA.
May 2006, Microsoft Research - Cambridge, UK.
All copyrights for these documents are retained by the copyright holder, and permission to copy this work should be obtained from the copyright holder in writing. This copyright notice must be kept together with the downloaded or printed document.
In my opinion, there are some nice images on this site as well. I believe the low resolution version of the images belong to the paper copyright holders while the high resolution versions belong to some combination of the photographers, my co-authors and myself. I am looking into this issue and will post a statement as soon as I can get a clearer determination.
Older Technical Reports and Course Projects
Kamel, M. Keast, J. and Pal, C. (1997) The Architecture of the Linux Kernel .
Pal, C. (1997) Multimedia Vector Processing .
Pal, C. (2000) Learning and Representing Semantic Information in WordNet and MindNet.
Pal, C. (2000) Numerical Methods for Pricing Financial Options .
Hu, M. Ingram, C. Sirski, M. Pal, C., Swamy, S. Patten, C.
(2000) A Hierarchical HMM Implementation
Gene Splice Site Prediction
Some links to past and present mentors and collaborators