My research area is machine learning. I am interested in online learning with logloss (sequential prediction), learning matrices and preference learning. Before, I also worked on learning with monotonicity constraints, boosting and rule ensembles.
I am currently an assistant professor at the Institute of Computing Science, Poznań University of Technology. In 20092012, I was a postdoctoral fellow at Centrum Wiskunde & Informatica (CWI), in the group of Peter Grünwald. I received PhD in Computer Science (2009) from Poznań University of Technology under supervision of prof. Roman Słowiński.
More information in my CV.
Some recent publications

Online isotonic regression
Wojciech Kotłowski, Wouter Koolen, Alan Malek
Conference on Learning Theory (COLT), 2016

Minimax strategy for prediction with expert advice under stochastic assumptions
Wojciech Kotłowski
Learning from Easy Data II, NIPS, 2015

Surrogate regret bounds for
generalized classification performance metrics
Wojciech Kotłowski, Krzysztof Dembczyński
Asian Conference on Machine Learning (ACML), 2015

Consistent optimization of AMS by logistic loss minimization
Wojciech Kotłowski
HEPML workshop, NIPS, 2014

Kernelization of Matrix Updates, When and How?
Manfred Warmuth, Wojciech Kotłowski, Shuisheng Zhou
Theoretical Computer Science, 2014

Follow the Leader with Dropout Perturbations
Tim van Erven, Wojciech Kotłowski, Manfred K. Warmuth
Conference on Learning Theory (COLT), 2014

Online PCA with Optimal Regrets
Nie Jiazhong, Wojciech Kotłowski, Manfred K. Warmuth
Algorithmic Learning Theory (ALT), 2013

HorizonIndependent Optimal Prediction with LogLoss in Exponential Families
Peter Bartlett, Peter Grünwald, Peter Harremoës, Fares Hedayati, Wojciech Kotłowski
Conference on Learning Theory (COLT), 2013

Optimizing the Fmeasure in Multilabel Classification: Plugin Rule Approach versus Structured Loss Minimization
Krzysztof Dembczyński, Arkadiusz Jachnik, Wojciech Kotłowski, Willem Waegeman, Eyke Hüllermeier
International Conference on Machine Learning (ICML), 2013

On Nonparametric Ordinal Classification with Monotonicity Constraints
Wojciech Kotłowski, Roman Słowiński
IEEE Transactions on Knowledge and Data Engineering, 2013

Consistent Multilabel Ranking through Univariate Losses
Krzysztof Dembczyński, Wojciech Kotłowski, Eyke Hüllermeier
International Conference on Machine Learning (ICML), 2012

Learning Eigenvectors for Free
Wouter Koolen, Wojciech Kotłowski, Manfred Warmuth
Conference on Neural Information Processing Systems (NIPS), 2011

Bipartite Ranking through Minimization of Univariate Loss
Wojciech Kotłowski, Krzysztof Dembczyński, Eyke Hüllermeier
International Conference on Machine Learning (ICML), 2011

Maximum Likelihood vs. Sequential Normalized Maximum Likelihood in Online Density Estimation
Wojciech Kotłowski, Peter Grünwald
Conference on Learning Theory (COLT), 2011
More extensive list of publications.
Software
I am coorganizing the Fifth Workshop on Information Theoretic Methods in Science and Engineering (WITMSE 2012), 2730 August 2012, Amsterdam, Netherlands.