Profils utilisateurs correspondant à "Aras Selvi"

Aras Selvi

PhD Researcher, Imperial College London
Adresse e-mail validée de imperial.ac.uk
Cité 31 fois

It's All in the Mix: Wasserstein Machine Learning with Mixed Features

R Belbasi, A Selvi, W Wiesemann - arXiv preprint arXiv:2312.12230, 2023 - arxiv.org
Problem definition: The recent advent of data-driven and end-to-end decision-making across
different areas of operations management has led to an ever closer integration of prediction …

Distributionally and adversarially robust logistic regression via intersecting Wasserstein balls

A Selvi, E Kreacic, M Ghassemi, V Potluru… - arXiv preprint arXiv …, 2024 - arxiv.org
Adversarially robust optimization (ARO) has become the de facto standard for training models
to defend against adversarial attacks during testing. However, despite their robustness, …

Convex maximization via adjustable robust optimization

A Selvi, A Ben-Tal, R Brekelmans… - INFORMS Journal on …, 2022 - pubsonline.informs.org
Maximizing a convex function over convex constraints is an NP-hard problem in general.
We prove that such a problem can be reformulated as an adjustable robust optimization (ARO) …

Differential Privacy via Distributionally Robust Optimization

A Selvi, H Liu, W Wiesemann - arXiv preprint arXiv:2304.12681, 2023 - arxiv.org
In recent years, differential privacy has emerged as the de facto standard for sharing statistics
of datasets while limiting the disclosure of private information about the involved individuals…

Wasserstein logistic regression with mixed features

A Selvi, MR Belbasi, M Haugh… - Advances in Neural …, 2022 - proceedings.neurips.cc
Recent work has leveraged the popular distributionally robust optimization paradigm to
combat overfitting in classical logistic regression. While the resulting classification scheme …

A reformulation-linearization technique for optimization over simplices

A Selvi, D den Hertog, W Wiesemann - Mathematical Programming, 2023 - Springer
We study non-convex optimization problems over simplices. We show that for a large class
of objective functions, the convex approximation obtained from the Reformulation-…

Using column generation to solve extensions to the Markowitz model

LM Roebers, A Selvi, JC Vera - The Engineering Economist, 2019 - Taylor & Francis
We introduce a solution scheme for portfolio optimization problems with cardinality constraints.
Typical portfolio optimization problems are extensions of the classical Markowitz mean–…

Can Synthetic Data Reduce Conservatism of Distributionally Robust Adversarial Training?

A Selvi, E Kreacic, M Ghassemi, VK Potluru, T Balch… - openreview.net
When the inputs of a machine learning model are subject to adversarial attacks, standard
stationarity assumptions on the training and test sets are violated, typically making empirical …

[PDF][PDF] ARTERIA BASILARIS OLUŞUMUNUN MORFOMETRİ VE GEOMETRİSİ

AGS SELVİ - nek.istanbul.edu.tr
… Erkekler ve kadınların yaş ortalamaları arası farklılıklar istatistiksel olarak anlamlı
bulunmadı … Ölçülen parametreler arası korelasyon Tablo 4.10.’da yer almaktadır. Ölçülen …

Vitamin D deficiency and risk of Helicobacter pylori infection in older adults: a cross-sectional study

…, H Selvi Oztorun, V Atmis, M Varli, S Aras - Aging clinical and …, 2019 - Springer
Background Vitamin D deficiency is known to cause increased predisposition to various
infectious diseases and the addition of vitamin D to antimicrobial treatment may improve …