Search Results for author: Ilker Demirel

Found 6 papers, 1 papers with code

Benchmarking Observational Studies with Experimental Data under Right-Censoring

no code implementations23 Feb 2024 Ilker Demirel, Edward De Brouwer, Zeshan Hussain, Michael Oberst, Anthony Philippakis, David Sontag

Drawing causal inferences from observational studies (OS) requires unverifiable validity assumptions; however, one can falsify those assumptions by benchmarking the OS with experimental data from a randomized controlled trial (RCT).

Benchmarking

Falsification of Internal and External Validity in Observational Studies via Conditional Moment Restrictions

no code implementations30 Jan 2023 Zeshan Hussain, Ming-Chieh Shih, Michael Oberst, Ilker Demirel, David Sontag

Our approach is interpretable, allowing a practitioner to visualize which subgroups in the population lead to falsification of an observational study.

counterfactual

Federated Multi-Armed Bandits Under Byzantine Attacks

no code implementations9 May 2022 Ilker Demirel, Yigit Yildirim, Cem Tekin

We demonstrate Fed-MoM-UCB's effectiveness against the baselines in the presence of Byzantine attacks via experiments.

Data Poisoning Federated Learning +1

Safe Linear Leveling Bandits

no code implementations13 Dec 2021 Ilker Demirel, Mehmet Ufuk Ozdemir, Cem Tekin

In this work, we tackle a different critical task through the lens of \textit{linear stochastic bandits}, where the aim is to keep the actions' outcomes close to a target level while respecting a \textit{two-sided} safety constraint, which we call \textit{leveling}.

Multi-Armed Bandits Thompson Sampling

ESCADA: Efficient Safety and Context Aware Dose Allocation for Precision Medicine

1 code implementation26 Nov 2021 Ilker Demirel, Ahmet Alparslan Celik, Cem Tekin

We propose ESCADA, a novel and generic multi-armed bandit (MAB) algorithm tailored for the leveling task, to make safe, personalized, and context-aware dose recommendations.

Thompson Sampling

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