Open postdoctoral position in ML at UCLouvain (INMA/ICTEAM), Belgium
Bálint Daróczy
Dear All,
we are looking for a postdoctoral researcher to join us at the department of Mathematical Engineering (ICTEAM/INMA, https://uclouvain.be/en/research-institutes/icteam/inma) at Université catholique de Louvain (UCLouvain, https://uclouvain.be/fr/index.html) in an ongoing Mandat d'impulsion scientifique - MIS, F.R.S.-FNRS (https://www.frs-fnrs.be) funded project "Learning from Pairwise Comparisons" (https://sites.uclouvain.be/learning_from_pairwise_comparisons/) for the period of 2020-2022. The project is led by Professor Julien Hendrickx.
About the project:
The Learning from Pairwise Comparisons project focuses on learning problems in which a set of values have to be learned based on noisy information about pairs of these values (e.g. their ratio, product), a framework that applies to large classes of problems including for example
- Recovering weights from comparison results in a Bradley-Terry-Luce model, with applications as diverse as modelling customer preferences, online advertisement, ranking quality of sport teams or evaluating patient reaction to medications
- Determining experts' abilities without knowing the ground truth of their actions e.g. in a Dawid-Skene based model
- General rank-1 matrix completion with perturbed data.
Objective and approach: We aim at developing generic ultra-rapid near-linear algorithms with minimax optimality guarantees for these learning problems. Our algorithms rely on formulating these problems as weighted least-square systems that are linear in the estimates but highly non-linear in the data, and exploiting the graph structure of the data to solve these systems in near linear time. The data can indeed be represented by a weighted graph in which two variables are connected when information on that pair is available, and this graph plays a major role both in the analysis of the algorithm and in the development of minimax lower bounds.
The initial length is one-year (full time) with a possibility of expansion up to two years. The postdoctoral salary is free of tax and the hired candidate will be covered by the Belgian Healthcare System.
If you are interested please check the site (https://sites.uclouvain.be/learning_from_pairwise_comparisons/) and contact Pascale Premereur (https://uclouvain.be/fr/repertoires/pascale.premereur) with mentioning the name of the project and include (at least) a CV, a list of publications, and the name of two referees. If you have any questions please contact us.
Best regards,
INMA/ICTEAM
UCLouvain
Tran Hung
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