Call For Papers

Contact Information

Prof. Marco A. P. Idiart
Institute of Physics  
Federal University of Rio Grande do Sul
Av. Bento Gonçalves, 9500
Porto Alegre - RS - Brazil
CEP 91501-970
Fax: (+55) 51 3308 6437
Email: idiart at if <dot> ufrgs <dot> br

Short Biography

I am a Professor of Physics at the Institute of Physics, of the Federal University of Rio Grande do Sul. In 2014/2015 I was a Visiting Scholar at the Laboratory of Information and Decision Systems of the Massachusetts Institute of Technology (USA). In 2011-2012 I was a Visiting Scholar at Brandeis University (USA), where I also worked as a Senior Researcher in 1992-1995.

I received my PhD in Statistical Physics from the
Institute of Physics, of the Federal University of Rio Grande do Sul. My main research interests are in Computational Neuroscience, particularly in neural network models for memory and spatial localization in the hyppocampus and I have also worked in models for the olfactory system. Recently I have been interested in developing statistical and distributional models for language. 

I am the leader of the Neurocomputational and Language Processing Laboratory at UFRGS.

I am also one of the creators of the science podcast Fronteiras da Ciência (available in Portuguese).

Current and Recent Activities

  • MIT/CNPq Cognitive Computational Models of Natural Languages for Assessing Language Competency Project. With  Suzanne Flynn, Robert Berwick, Aline Villavicencio and Rosa Vicari.
  • CNPq/2012 Cognitive Computational Investigations of Language Acquisition and Use in Clinical Cases Project. With Maria Alice Parente, Robert Berwick, Aline Villavicencio, Anna Korhonen  and Thierry Poibeau
  • Computational Models for Language Acquisition and Dissolution. With Aline Villavicencio, Jerusa Salles, Anderson Santos and Gustavo Valdez.
  • Reviewer for PLOS One, Hippocampus. 

Selected Publications

2016

  • Cordeiro, S., Ramisch, C., Idiart, M., Villavicencio, A. Predicting the Compositionality of Nominal Compounds: Giving Word Embeddings a Hard Time. In Proceedings of The 54th Annual Meeting of the Association for Computational Linguistics (ACL-2016), 2016.
  • Salle, A., Idiart, M., Villavicencio, A. Matrix Factorization using Window Sampling for Improved Word Representations. In Proceedings of The 54th Annual Meeting of the Association for Computational Linguistics (ACL-2016), 2016. [pdf]
  • Ramisch, C., Cordeiro, S., Idiart, M., Villavicencio, A. How Naked is the Naked Truth? A Multilingual Lexicon of Nominal Compound Compositionality. In Proceedings of The 54th Annual Meeting of the Association for Computational Linguistics (ACL-2016), 2016. [pdf]
  • Zilio, L., Wilkens, R., Mollmann, L., Idiart, Marco, Wehrli, E., Cordeiro, S., Villavicencio, A. Joining Forces for Multiword Expression Identification. In Proceedings of 12th International Conference on the Computational Processing of Portuguese (PROPOR), 2016. [pdf]
  • Wagner Filho, J., Wilkens, R., Zilio, L., Idiart, M., Villavicencio, A. Crawling by Readability Level. In Proceedings of 12th International Conference on the Computational Processing of Portuguese (PROPOR), 2016. [pdf]
  • Wilkens, R., Idiart, M., Villavicencio, A. Multiword Expressions in Child Language. In Proceedings of 10th edition of the Language Resources and Evaluation Conference (LREC), 2016. [pdf]
  • Wilkens, R., Zilio, L., Idiart, M., Wagner Filho, J., Ferreira, E., Santos, L., Pasqualini, B., Villavicencio, A. Resources for Monolingual Translation: a case study of Text Simplification for Portuguese. In Proceedings of PROPOR 2016 Workshop on Corpora and Tools for Processing Corpora, 2016.
  • Cordeiro, S., Ramisch, C., Idiart, M., Villavicencio, A. MWE-aware corpus processing with the mwetoolkit and word embeddings. In Proceedings of PROPOR 2016 Workshop on Corpora and Tools for Processing Corpora, 2016.

2015

  • Sanders, H., Rennó-Costa, C. Idiart, M., Lisman, J. Grid Cells and Place Cells: An Integrated View of their Navigational and Memory Function. Trends in Neurosciences (Regular ed.) , v. 38, p. 763-775, 2015.
2014
  • M. Padró; M. Idiart, C. Ramisch and A. Villavicencio. Nothing like Good Old Frequency: Studying Context Filters for Distributional Thesauri. In Proceedings of the 2014 Conference on Empirical Methods in Natural Language Processing (EMNLP), 2014. [pdf]
  • M. Padró, M. Idiart, A. Villavicencio and C. Ramisch. Comparing Similarity Measures for Distributional Thesauri. In Proceedings of the Ninth International Conference on Language Resources and Evaluation (LREC'14), 2014. [pdf]

2013

  • A. Villavicencio, M. Idiart, R. Berwick, and I. Malioutov. Language Acquisition and Probabilistic Models: keeping it simple. In Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics, 2013. [pdf]
  • de  Almeida, L.,  Idiart, M., Linster, C. . A model of cholinergic modulation in olfactory bulb and piriform cortex. Journal of Neurophysiology, v. 109, p. 1360-1377, 2013.

2012

  • L. Almeida, M. Idiart, A. Villavicencio, J. Lisman. Alternating predictive and short-term memory modes of entorhinal grid cells. In Hippocampus, May 2, 2012. [pdf]
  • A. Villavicencio, M. Idiart, C. Ramisch, V. Araujo, B. Yankama, R.C. Berwick. Get out but don’t fall down: verb-particle constructions in child language. In Proceedings of the EACL-2012 Workshop on Computational Models of Language Acquisition and Loss. 2012, [pdf]
  • A. Villavicencio, B.Yankama, R. Wilkens, M. Idiart, R.C. Berwick. An annotated English child language database. In Proceedings of the EACL 2012 Workshop on Computational Models of Language Acquisition and Loss. 2012 [pdf]
  • A. Villavicencio, B. Yankama, M. Idiart and R.C. Berwick. A large scale annotated child language construction database. In Proceedings of the Eight International Conference on Language Resources and Evaluation (LREC’12). 2012 [pdf]

2011

  • Romero, Roseli A.F., Prestes, Edson, Idiart, Marco A.P., FARIA, Gedson . Locally oriented potential field for controlling multi-robots. Communications in Nonlinear Science & Numerical Simulation, v. -, p. -, 2011.

2010

  • de Almeida, L. B., Idiart, M., Lisman, J. E. . The single place fields of CA3 cells: A two-stage transformation from grid cells. Hippocampus (New York, N.Y. Print), p. n/a-n/a, 2010.
  • Silva Jr., E. P. E., Idiart, M. A. P. . Computing Navigational Routes in Inhomogeneous Environments using BVP Path Planner.. In Proceedings of the  IEEE/RSJ International Conference on Intelligent Robots and Systems, 2010.

2009

  • de Almeida, L., Idiart, M., LISMAN, J. E. . The Input-Output Transformation of the Hippocampal Granule Cells: From Grid Cells to Place Fields. The Journal of Neuroscience, v. 29, p. 7504-7512, 2009.
  • de Almeida, L., Idiart, M., Lisman, J. E. . A Second Function of Gamma Frequency Oscillations: An E%-Max Winner-Take-All Mechanism Selects Which Cells Fire. The Journal of Neuroscience, v. 29, p. 7497-7503, 2009.
  • Silva Jr., E. P. E., Idiart, M. A. P. . Sculpting potential fields in the BVP Path Planner. In: IEEE International Conference on Robotics and Biomimetics, 2009, 2009, Guilin, China.. IEEE International Conference on Robotics and Biomimetics, 2009, 2009. p. 183-188.

2008

  • Ramisch, C., A. Villavicencio, L. Moura and M. Idiart. Picking them up and Figuring them out: Verb-Particle Constructions, Noise and Idiomaticity. In Proceedings of the Twelfth Conference on Computational Natural Language Learning, Manchester, 2008. [pdf]
  • Ramisch, C., P. Schreiner, M. Idiart and A. Villavicencio. An Evaluation of Methods for the Extraction of Multiword Expressions. In Proceedings of the LREC 2008 Workshop on Multiword Expressions, Marrakech, 2008. [pdf]
  • Villavicencio, A., V. Kordoni, Y. Zhang, M. Idiart, and C. Ramisch. Validation and evaluation of automatically acquired multiword expressions for grammar engineering. In Proceedings of the 2007 Joint Conference on Empirical Methods in Natural Language Processing and Computational Natural Language Learning (EMNLP-CoNLL 2007), Prague, 2008. [pdf]

2007

  • Almeida, L. B., Idiart, M. A. P., Lisman, J. E. . Memory retrieval time and memory capacity of the CA3 network: Role of gamma frequency oscillations. Learning & Memory, v. 14, p. 785-806, 2007.
  • Almeida, L. B., Idiart, M. A. P., Quillfeldt, J. A. . Coupled map model for spatio-temporal processing in the olfactory bulb. In Ninth Granada Lectures, Granada, Spain, 2007, Granada. Cooperative Behavior in Neural Systems - Ninth Granada Lectures, Granada, Spain, 11-15 Sept 2006. New York: American Institute of Physics Conference Proceedings, 2007, 2006.

2006

  • Dapper, F., Silva Jr., E. P. E., Idiart, M. A. P., Luciana, . Simulating pedestrian behavior with potential fields. In: Advances in Computer Graphics, 2006, Beijing. Lecture Notes in Computer Sciences, 2006. v. 4035. p. 324-335.
  • Trevisan, M., Idiart, M. A. P., Silva Jr., E. P. E., Engel, P. M. . Exploratory navigation based on dynamical boundary value. Journal of Intelligent & Robotic Systems, v. 45, p. 101-114, 2006.
  • Almeida, R. M. C., Espinosa, A., Idiart, M. A. P. . Concatenated retrieval of correlated stored information in neural networks. Physical Review E - Statistical Physics, Plasmas, Fluids and Related Interdisciplinary Topics, v. 74, p. 041913, 2006.
  • Zhang, Y., V. Kordoni, A. Villavicencio and M. Idiart. Automated Multiword Expression Prediction for Grammar Engineering. In Proceedings of COLING/ACL Workshop on Multiword Expressions: Identifying and Exploiting Underlying Properties, Sydney, Australia, 2006. [pdf]

2005

  • Quillet, Catherine, Idiart, M. A. P., Dollet, Benjamin, Berthier, L, Yekini, A . Bubbles in sheared two-dimensional foams. Colloids and Surfaces A: Physicochemical and Engineering Aspects, Holanda, v. 263, n.1-3, p. 95-100, 2005.
  • Thomas, Gilberto L, Mombach, José C M, Idiart, M. A. P., Quillet, Catherine, Graner, François . Simulations of viscous shape relaxation in shuffled foam clusters. Colloids and Surfaces A: Physicochemical and Engineering Aspects, Holanda, v. 263, n.1-3, p. 90-94, 2005.
  • Mombach, José C M, Robert, Damien, Graner, François, Gillet, Germain, Thomas, Gilberto L, Idiart, M. A. P., Rieu, Jean Paul . Rounding of aggregates of biological cells: Experiments and Simulations. Physica A, Holanda, v. 352, n.2-4, p. 525-534, 2005.
  • Levin, Y., Idiart, M. A. P., J. J. Arenzon . Random walk to freedom: The time of effusion. Physica. A, v. 354, p. 95-100, 2005.
  • Risau-Gusman, S., Idiart, M. A. P. . Retrieval-times properties of the Little-Hopfield model and their physiological relevance. Physical Review E - Statistical Physics, Plasmas, Fluids and Related Interdisciplinary Topics, v. 72, n.041913, p. 041913, 2005.

2004

  • Levin, Y., Idiart, M. A. P. . Pore dynamics of osmotically stressed vesicles. Physica. A, v. 331, n.2, p. 571-578, 2004.
  • Silva Jr., E. P. E., Idiart, M. A. P., Trevisan, M., Engel, P. M. . Autonomous Learning Architecture to Environmental Mapping. Journal of Intelligent & Robotic Systems, Holanda, v. 39, n.3, p. 243-263, 2004.
  • Idiart, M. A. P.; Levin, Y. . Rupture of a liposomal vesicle. Physical Review. E, Statistical, Nonlinear and Soft Matter Physics, v. 69, n.061922, p. 061922, 2004.
  • Levin, Y., Idiart, M. A. P., J. J. Arenzon . Solute diffusion out of a vesicle. Physica. A, v. 344, n.3-4, p. 543-546, 2004.
  • Silva Jr., E. P. E., Ferrugem, A. P., Idiart, M. A. P., Barone, D. A. C. . A Perceptual User Interface Using Mean Shift. Lecture Notes in Artificial Intelligence, v. 3315, p. 590-599, 2004.
  • Faria, G., Silva Jr., E. P. E., Romero, R. F. A., Idiart, M. A. P. . Comparing Harmonic Functions and Potential Fields in the Trajectory Control of Mobile Robots. In Proceedings of the 2004 IEEE Conference on Robotics, Automation and Mechatronics, 2004.
  • Trevisan, M., Idiart, M. A. P., Silva Jr., E. P. E. . Trajectory Learning with a Vector Neural Network. In Proceedings of 2004 Brazilian Simposium on Neural Networks, 2004.

2003

  • Levin, Y., Idiart, M. A. P. Pore dynamics of osmotically stressed vesicles. Physica A. , 2003.
  • Silva Jr., E. P. E., Trevisan, M., Idiart, M. A. P., Engel, P. M. BVP-exploration: further improvements. In Proceedings of the 2003 IEEE/RSJ International Conference on Intelligent Robots and Systems. IEEE Publishing, 2003.

2002

  • Mombach, J. C. M., Lemke, N., Bodmann, B. E. J., Idiart, M. A. P.  A mean field theory of cellular growth. Europhysics Letters, v.59, n.6, p.923 - 928, 2002.
  • Silva Jr., E. P. E., Idiart, M. A. P., Engel, P. M., Trevisan, M.  Oriented exploration in non-oriented sparse environments In Proceedings of the 2001 IEEE/RSJ International Conf. on Intel. Robot. and Sys., 2002
  • Idiart, M. A. P., Trevisan, M.  Directing a random walker with optimal potentials. Physica A: Statistical Mechanics and its Applications, v.307, n.1-2, p.52 - 62, 2002.
  • Silva Jr., E. P. E., Engel, P. M., Trevisan, M., Idiart, M. A. P.  Exploration method using harmonic functions. Robotics and Autonomous Systems, v.40, n.1, p.25 - 42, 2002.
  • Almeida, R. M. C., Idiart, M. A. P.  Information space dynamics for neural networks. Physical Review E, v.65, n.6, 2002.

2001

  • Silva Jr., E. P. E., Idiart, M. A. P., Engel, P. M., Trevisan, M. Exploration technique using potential fields calculated from relaxation methods In Proceedings of the 2001 IEEE/RSJ International Conference on Intel. Rob. and Sys., 2001.
  • Mombach, J. C. M., Lemke, N., Bodmann, B. E. J., Idiart, M. A. P.  Spatial power-like decay on the interaction among biological cells unifies some classical laws of population growth In: XIV CNMAT, 2001, Belo Horizonte, MG. Seleta do XXIV CNMAC. , 2001.
  • Silva Jr., E. P. E., Idiart, M. A. P., Engel, P. M., Trevisan, M.  Exploration technique using potential fields calculated from relaxation methods In Proceedings of 2001 IEEE/RSJ International Conference on Intel. Rob. and Sys., 2001.

2000 and before

  • Idiart, M. A. P.  Performances in supervised learning. Physica A, v.285, n.3-4, p.566 - 578, 2000.
  • Idiart, M. A. P., Medeiros, G., Almeida, R. M. C. Selection experiments in the Penna model for biological aging. Int. Journal of Modern Physics C, v.11, n.7, p.1283 - 1296, 2000.
  • Idiart, M. A. P., E. L. De Santa Helena. Helping Supervised Learning With An Educated Teacher. Physica A, v.257, p.395 - 400, 1998.
  • Idiart, M. A. P., E. L. De Santa Helena.  Optimal Supervised Learning With Two Teachers. Physica A, v.253, p.333 - 346, 1998.
  • Idiart, M. A. P.  Second-Hand Supervised Learning In Hebbian Perceptrons. Network : Computation in Neural Systems, v.8, p.453 - 463, 1997.
  • Jensen, O., Idiart, M. A. P., Lisman, J. Physiologically Realistic Formation Of Autoassociative Memory In Networks With Theta/Gamma Oscillations: Role Of Fast Nmda Channels. Learning and memory, v.3, p.243 - 256, 1996.
  •  Lisman, J. E., Idiart, M. A. P. A Mechanism For Storing 7+-2 Short-Term Memories In Oscillatory Subcycles. Science, v.267, p.1512 - 1515, 1995.
  • Idiart, M. A. P., Berk, B., Abbott, L. F.  Reduced Representation By Neural Networks With Restricted Receptive Fields. Neural Computation, v.7, p.507 - 517, 1995. 
  • Blum, K. I., Idiart, M. A. P. A Theoretical Framework For Quantal Analysis And Its Applications To Long Term Potentiation. Journal of Neurophysiology, v.72, p.1395 - 1401, 1994.
  • Idiart, M. A. P., Abbott, L. F. Propagation Of Excitations In Neural Networks Models. Network - Computation in neural systems, v.4, p.285 - 294, 1993.
  • Idiart, M. A. P., Theumann, A. Neural Networks With Hierarquical Clustering Near Saturation. Journal of Physics A: Math. Gen., v.25, p.779 - 795, 1992.
  • Idiart, M. A. P., Theumann, A. The Space Of Interactions In Neural Networks With Hierarchical Cluster Organization. Journal of Physics A: Math. Gen., v.25, p.5911 - 5918, 1992.
  • Idiart, M. A. P., Theumann, A.  Retrieval Properties In Neural Networks With Hierarchical Clustering. Journal of Physics A: Math. Gen., v.24, p.649 - 658, 1991.
  • Theumann, A., Idiart, M. A. P. Self-Consistent Localization Theory In Magnetic Fields And The Upper Critical Field Of Disordered Journal of Physics: Condens. Matter, v.3, p.3765 - 3775, 1991.

Current and Former Students

  • Alex Salle
  • Felipe Fagundes Paula
  • Licurgo de Almeida
  • Roger Moreira da Silva
  • Samoel Renan Mello da Silva
  • Jader Peres da Silva
  • Edson Prestes e Silva Junior