Machine-learning-nederland May 2022

machine-learning-nederland@list.uva.nl

2 participants
2 discussions

Thematic seminar: Julia Olkhovskaya, Friday June 10, 16h00
by Tim van Erven 30 May '22

30 May '22

Dear all, On Friday June 10 we have Julia Olkhovskaya from the VU speaking in the thematic seminar. *Julia Olkhovskaya *(Vrije Universiteit, https://sites.google.com/view/julia-olkhovskaya/home) *Friday June 10*, 16h00-17h00 Online on Zoom: https://uva-live.zoom.us/j/89796690874 Meeting ID: 897 9669 0874 *Lifting the Information Ratio: An Information-Theoretic Analysis of Thompson Sampling for Contextual Bandits* We study the Bayesian regret of the renowned Thompson Sampling algorithm in contextual bandits with binary losses and adversarially-selected contexts. We adapt the information-theoretic perspective of Russo and Van Roy [2016] to the contextual setting by introducing a new concept of information ratio based on the mutual information between the unknown model parameter and the observed loss. This allows us to bound the regret in terms of the entropy of the prior distribution through a remarkably simple proof, and with no structural assumptions on the likelihood or the prior. We also extend our results to priors with infinite entropy under a Lipschitz assumption on the log-likelihood. An interesting special case is that of logistic bandits with d-dimensional parameters, K actions, and Lipschitz logits. This is joint work with Gergely Neu, Matteo Papini and Ludovic Schwartz. Seminar organizers: Tim van Erven Botond Szabo https://mschauer.github.io/StructuresSeminar/ -- Tim van Erven<tim(a)timvanerven.nl> www.timvanerven.nl

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Best Paper Award (CHF 500) deadline June 2022 - [Robotics] (ISSN 2218-6581, citescore 3.5)
by Charlene Dong 06 May '22

06 May '22

Dear colleagues, *Best Paper Award* in Special Issue "Women in Robotics" (500CHF) https://www.mdpi.com/journal/robotics/awards/1658 Deadline: 31 August 2022 You are welcome to submit articles by at least one female co-author to this special issue "Women in Robotics" https://www.mdpi.com/journal/robotics/special_issues/Women_Robotics Guest editors: Prof. Dr. Naira Hovakimyan, Prof. Dr. Anna Esposito and Prof. Dr. Sanaz Mostaghim Deadline for manuscript submissions: 15 June 2022 Each award nominee will be assessed on her paper's originality, quality, and contribution to the field by the Evaluation Committee. The winner will receive a certificate, an award of 500 CHF, and an opportunity to publish her next submission in Robotics free of charge. If you are interested in this project, please feel free to contact us via email charlene.dong(a)mdpi.com or robotics(a)mdpi.com within two weeks. Thanks for your support. Look forward to hearing from you. Best regards, Ms. Charlene Dong Managing Editor Email: charlene.dong(a)mdpi.com Robotics (http://www.mdpi.com/journal/robotics/)

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Machine-learning-nederland May 2022