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DTSTART;TZID=Europe/Berlin:20230123T160000
DTEND;TZID=Europe/Berlin:20230123T170000
DTSTAMP:20221216T110910Z
CREATED:20221130T084745Z
LAST-MODIFIED:20221216T110910Z
UID:6893-1674489600-1674493200@alop.uni-trier.de
SUMMARY:ALOP Colloquium with Jannis Kurtz
DESCRIPTION:On Monday\, January 23\, 2023 at 16:00 c.t. Dr. Jannis Kurtz\, University of Amsterdam\, will speak at the ALOP Colloquium about his recent work: \n  \nDeriving Robust Counterfactual Explanations for Machine Learning Models via Two-Stage Robust Optimization \nAbstract: \nNowadays machine learning models are often used to make decisions based on personal data which significantly affect individuals\, e.g. the decision of granting a loan to a person or not. However many machine learning models behave like black-boxes and can incorporate biases contained in the data into their decision which is why in 2016 the European Union enacted the “right to explanation”.   \nCounterfactual explanations (CE) play an important role in providing such explanations and hence improving explainability. The idea is to find the smallest changes which have to be made to a data point such that the model would have changed its decision. Unfortunately most of the common methods can only provide one CE which can be unrealistic to reach for the user. \nIn this work we present a model to calculate robust CEs\, i.e. CEs where after changing each attribute in a certain range the perturbed data point still remains a CE. Hence our method provides a whole set of CEs and the user can choose the one which is most reasonable. We use algorithmic ideas from two-stage robust optimization to calculate robust CEs for the most popular ML methods including logistic regression\, decision trees and neural networks. We show that our method is able to calculate CEs efficiently for common data sets. \n  \nPlease join us at 16:00 c.t. in HS 9. \n 
URL:https://alop.uni-trier.de/event/alop-colloquium-with-jannis-kurtz/
LOCATION:Trier University E Building\, Universitätsring 15\, Trier\, 54296\, Germany
CATEGORIES:Colloquium
ORGANIZER;CN="RTG ALOP at Trier University":MAILTO:ALOP@uni-trier.de
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DTSTART;TZID=Europe/Berlin:20230130T160000
DTEND;TZID=Europe/Berlin:20230130T170000
DTSTAMP:20230124T080128Z
CREATED:20230116T141030Z
LAST-MODIFIED:20230124T080128Z
UID:6991-1675094400-1675098000@alop.uni-trier.de
SUMMARY:CANCELED - ALOP Colloquium with Mark Vogelsberger
DESCRIPTION:Unfortunately\, the talk has to be rescheduled. \nAs soon as there is a new date\, we will announce it here.
URL:https://alop.uni-trier.de/event/alop-colloquium-with-mark-vogelsberger/
CATEGORIES:Colloquium
ORGANIZER;CN="RTG ALOP at Trier University":MAILTO:ALOP@uni-trier.de
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