Contact Address
Universitat Pompeu Fabra
c/ Tanger, 122140, 55.219
08018 Barcelona, Spain
email: my prefix is vicen.gomez and the server is at upf.edu.
Short Bio
Vicenç Gómez is a postdoctoral researcher in the Artificial Intelligence and Machine Learning group at the Universitat Pompeu Fabra
(Ramón y Cajal fellowship).
He obtained the B. Sc. degree in Computer Science Engineering at the Facultat d'Informàtica de
Barcelona of the Universitat Politècnica de
Catalunya in 2003 and his Ph.D. in Computer Science and Digital
Communication at the Department of
Information and Communication Technologies of the Universitat Pompeu Fabra in 2008. He then joined
the machine learning group at the Radboud University, Nijmegen (The
Netherlands) with Prof. Dr. H. J.
Kappen where he has performed research within several european projects for five years.
His research focuses on machine learning and optimal control and their applications to different areas such as robotics, complex networks and brain computer interfaces.
See the [research statement]
[Google Scholar profile][ ResearchGate profile]
Research Interests
Machine learning, approximate inference and optimal control.
Application areas: robotics, brain computer interfaces, social networks and smart grid.
Complex networks analysis and control.
Preprints

M. Junyent, A. Jonsson, V. Gómez (2018)
Improving widthbased planning with compact policies
ICML / IJCAI / AAMAS 2018 Workshop on Planning and Learning
pdf cs.AI:1806.05898  G. Neu, V. Gómez, A. Jonsson (2017)
A unified view of entropyregularized Markov decision processes
Deep Reinforcement Learning Symposium, NIPS 2017
pdf cs.LG:1705.07798
Conference Publications

N. Lykousas, V. Gómez, C. Patsakis (2018)
Adult content in Social Live Streaming Services: Characterizing deviant users and relationships
International Conference on Advances in Social Networks Analysis and Mining (ASONAM)
pdf cs.SI:1806.10577 bibtex web 
P. Aragón, D. SáezTrumper, M. Redi, S. A. Hale, V. Gómez, A. Kaltenbrunner (2018)
Online Petitioning Through Data Exploration and What We Found There: A Dataset of Petitions from Avaaz.org
International AAAI Conference on Web and Social Media (ICWSM)
pdf cs.SI:1806.08282 bibtex web  G. Neu, V. Gómez (2017)
Fast rates for online learning in Linearly Solvable Markov Decision Processes
Conference on Learning Theory (COLT)
pdf cs.LG:1702.06341 bibtex web  H. Gallego, D. Laniado, A. Kaltenbrunner, V Gómez, P. Aragón (2017)
Lost in ReElection: A Tale of Two Spanish Online Campaigns
International Conference on Social Informatics (SocInfo)
pdf bibtex web  P. Aragón, A. Kaltenbrunner, A. CallejaLópez, A. Pereira, A. Monterde, X.E. Barandiaran, V Gómez (2017)
Deliberative Platform Design: The Case Study of the Online Discussions in Decidim Barcelona
International Conference on Social Informatics (SocInfo)
pdf bibtex web  P. Aragón, V. Gómez, A. Kaltenbrunner (2017)
To Thread or Not to Thread: The Impact of Conversation Threading on Online Discussion
International AAAI Conference on Web and Social Media (ICWSM)
pdf bibtex ICWSM17  A. Jonsson, V. Gómez (2016)
Hierarchical LinearlySolvable Markov Decision Problems
International Conference on Automated Planning and Scheduling (ICAPS)
pdf slides bibtex web cs.AI:1603.03267  V. Gómez, S. Thijssen, A. C. Symington, S. Hailes, H. J. Kappen (2016)
RealTime Stochastic Optimal Control for Multiagent Quadrotor Systems
International Conference on Automated Planning and Scheduling (ICAPS)
pdf slides bibtex web cs:1502.04548  P. Aragón, V. Gómez, A. Kaltenbrunner (2016)
Visualization Tool for Collective Awareness in a Platform of Citizen Proposals
International AAAI Conference on Web and Social Media (ICWSM)
pdf web bibtex  V. Gómez, H. J. Kappen, J. Peters, G. Neumann (2014)
Policy Search for Path Integral Control
European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases (ECML/PKDD)
[abstract]
pdf bibtex  T. Matsubara, V. Gómez, H. J. Kappen (2014)
Latent Kullback Leibler Control for ContinuousState Systems Using Probabilistic Graphical Models
Uncertainty in Artificial Intelligence (UAI), Quebec, Canada
pdf bibtex cs.SY:1406.0993  V. Gómez, H. J. Kappen, A. Kaltenbrunner (2011)
Modeling the structure and evolution of discussion cascades
ACM Conference on Hypertext and Hypermedia (HT) Eindhoven, Netherlands
pdf bibtex HT'11 cs.SI:1011.0673 datasets  M. Gheshlaghi Azar, V. Gómez, H. J. Kappen (2011)
Dynamic Policy Programming with Function Approximation
International Conference on Artificial Intelligence and Statistics (AISTATS), Fort Lauderdale, USA
pdf bibtex supplementary JMLR  V. Gómez, A. Kaltenbrunner, V. López, H. J. Kappen (2008)
Selforganization using synaptic plasticity
Advances in Neural Information Processing Systems (NIPS)
pdf bibtex NIPS'08 nlin.AO:0808.3129 poster  V. Gómez, A. Kaltenbrunner, V. López (2008)
Statistical analysis of the social network and discussion threads in Slashdot
International World Wide Web Conference (WWW), Beijing, China
pdf bibtex slides WWW'08  A. Kaltenbrunner, V. Gómez, V. López (2007)
Description and Prediction of Slashdot Activity
Latin American Web Congress (LAWEB 2007), Santiago de Chile. IEEE Computer Society
pdf bibtex IEEE  V. Gómez, A. Kaltenbrunner, V. López (2006)
Event Modeling of Message Interchange in Stochastic Neural Ensembles
International Joint Conference Neural Networks (IJCNN), IEEE World Congress of Computational Intelligence, Vancouver, BC, Canada
pdf slides bibtex IEEE
Journal Publications
 M. Molkaraie, V. Gómez
Monte Carlo Methods for the Ferromagnetic Potts Model Using Factor Graph Duality
IEEE Transactions on Information Theory (2018)
pdf stat.CO:1506.07044 TIT  P. Aragón, V. Gómez, D. García, A. Kaltenbrunner
Generative models of online discussion threads: state of the art and research challenges
Journal of Internet Services and Applications 8(1):15 (2017)
pdf bibtex JISA  P. Aragón, V. Gómez, A. Kaltenbrunner
Detecting Platform Effects in Online Discussions
Policy & Internet doi:10.1002/poi3.158(2017)
pdf bibtex P&I  D. Thalmeier, V. Gómez, H. J. Kappen
Action selection in growing state spaces: Control of Network Structure Growth
Journal of Physics A: Mathematical and Theoretical 50(3) 034006 (2017)
pdf bibtex cs.SI:1606.07777 JPhysA  A. Llera, V. Gómez, H. J. Kappen
Quantitative analysis of task selection for BrainComputer Interfaces
Journal of Neural Engineering 11(5):056002 (2014)
pdf bibtex JNE  A. Llera, V. Gómez, H. J. Kappen
Adaptive Multiclass Classification for Brain Computer Interfaces
Neural Computation 26(6):110827 (2014)
pdf bibtex NECO  H. J. Kappen, V. Gómez
The Variational Garrote
Machine Learning Journal 96(3):269294 (2014)
pdf poster bibtex MLJ code  V. Gómez, H. J. Kappen, N. Litvak, A. Kaltenbrunner
A likelihoodbased framework for the analysis of discussion threads
World Wide Web 16(56):645675 (2013)
pdf bibtex WWW cs.SI.1203.0652 datasets  M. Gheshlaghi Azar, V. Gómez, H. J. Kappen
Dynamic Policy Programming
Journal of Machine Learning Research13(Nov):32073245 (2012)
pdf bibtex JMLR cs:1004.2027 code  A. Llera, V. Gómez, H. J. Kappen
Adaptive classification on Brain Computer Interfaces using reinforcement signals
Neural Computation 24(11):29002923 (2012)
pdf bibtex NECO  H. J. Kappen, V. Gómez, Opper M.
Optimal control as a graphical model inference problem
Machine Learning Journal 87(2):159182 (2012)
pdf bibtex MLJ math.OC.0901.0633  A. Llera, M. van Gerven, V. Gómez, O. Jensen, H. J. Kappen
On the use of Interaction Error Potentials for Adaptive Brain Computer Interfaces
Neural Networks 24(10):1201127 (2011)
pdf bibtex Neural Networks  V. Gómez, H. J. Kappen, M. Chertkov
Approximate inference on planar graphs using Loop Calculus and Belief Propagation
Journal of Machine Learning Research 11(Apr):12731296 (2010)
Proceedings of the 25th Conference on Uncertainty in Artificial Intelligence (UAI 2009), Montreal, Canada
pdf bibtex JMLR cs.AI:0901.0786 pdf bibtex UAI'09 poster code  V. Gómez, J. M. Mooij, H. J. Kappen
Truncating the loop series expansion for Belief Propagation
Journal of Machine Learning Research 8(Sep):19872016 (2007)
pdf bibtex JMLR cs.AI:0612109 code  A. Kaltenbrunner, V. Gómez, V. López
Phase transition and hysteresis in an ensemble of stochastic spiking neurons
Neural Computation 19(11):30113050 (2007)
pdf bibtex NECO  A. Kaltenbrunner, V. Gómez, A. Moghnieh, R. Meza, J. Blat, V. López
Homogeneous temporal activity patterns in a large online communication space
International Journal on WWW/Internet6(1):6176 (2008)
pdf bibtex cs.NI:0708.1579 (extended)
Other refereed Publications
 D. Thalmeier, V. Gómez, H. J. Kappen (2016)
Optimal Control of Network Structure Growth
NIPS 2016 Workshop: Advances in Approximate Bayesian Inference
pdf bibtex Web  V. Gómez, M. Gheshlaghi Azar, H. J. Kappen (2016)
Correcting Multivariate AutoRegressive Models for the Influence of Unobserved Common Input
19th International Conference of the Catalan Association for Artificial Intelligence (CCIA)
pdf bibtex web  G. Santatmaría, V. Gómez (2015)
Convex inference for community discovery in signed networks
NIPS 2015 Workshop: Networks in the Social and Information Sciences
pdf bibtex Web  A. Porco, A. Kaltenbrunner, V. Gómez (2015)
Lowrank approximations for predicting voting behaviour
NIPS 2015 Workshop: Networks in the Social and Information Sciences
pdf bibtex Web  A. Llera, V. Gómez, H. J. Kappen (2013)
Clustered Common Spatial Patterns
Tools for BrainComputer Interaction (TOBI) Workshop
pdf bibtex  V. Gómez, M. Chertkov, S. Backhaus, H. J. Kappen (2012)
Learning PriceElasticity of Smart Consumers in Power Distribution Systems
2012 IEEE Third International Conference on Smart Grid Communications (SmartGridComm)
Workshop on Architectures and Models for the Smart Grid (AMSG)
pdf bibtex cs.IT:1209.5656 SmartGridComm IEEE  A. Llera, V. Gómez, H. J. Kappen (2009)
Sparse matrix factorization for Brain Computer Interfaces
International Conference on Affective Computing & Intelligent Interaction, IEEE Computer Society
Workshop on Affective BrainComputer Interfaces (ABCI 2009)
pdf bibtex IEEE
Teaching
Phd Thesis
Algorithms and Complex Phenomena in Networks: Neural Ensembles, Statistical Inference and Online Communities [pdf] [pdfprint]Datasets [last modified: 14 May 2012]
 The datasets containing discussion threads from Slashdot, Barrapunto, Meneame and Wikipedia are available under email request.
Software [last modified: 27 Aug 2014]
 The MatLab source code for Sparse Linear Regression using the the Variational Garrote (Spike and Slab model)
 The source code for the loop corrections to Belief Propagation in planar graphs can be found here.
 The source code of the Truncated Loop Series algorithm (TLSBP) can be found here.
Currently, the code is being integrated with libDAI, a more general library which provides implementations of various approximate inference.
You must have libDAI installed to use TLSBP.  The Promedas networks used in the TLSBP article can be found here.