Search Results for author: Lee Cohen

Found 9 papers, 0 papers with code

Learnability Gaps of Strategic Classification

no code implementations29 Feb 2024 Lee Cohen, Yishay Mansour, Shay Moran, Han Shao

We essentially show that any learnable class is also strategically learnable: we first consider a fully informative setting, where the manipulation structure (which is modeled by a manipulation graph $G^\star$) is known and during training time the learner has access to both the pre-manipulation data and post-manipulation data.

Classification Multi-Label Learning

Bayesian Strategic Classification

no code implementations13 Feb 2024 Lee Cohen, Saeed Sharifi-Malvajerdi, Kevin Stangl, Ali Vakilian, Juba Ziani

We initiate the study of partial information release by the learner in strategic classification.

Classification

Incentivized Collaboration in Active Learning

no code implementations1 Nov 2023 Lee Cohen, Han Shao

In collaborative active learning, where multiple agents try to learn labels from a common hypothesis, we introduce an innovative framework for incentivized collaboration.

Active Learning

Sequential Strategic Screening

no code implementations31 Jan 2023 Lee Cohen, Saeed Sharifi-Malvajerdi, Kevin Stangl, Ali Vakilian, Juba Ziani

We initiate the study of strategic behavior in screening processes with multiple classifiers.

Modeling Attrition in Recommender Systems with Departing Bandits

no code implementations25 Mar 2022 Omer Ben-Porat, Lee Cohen, Liu Leqi, Zachary C. Lipton, Yishay Mansour

We first address the case where all users share the same type, demonstrating that a recent UCB-based algorithm is optimal.

Multi-Armed Bandits Recommendation Systems

Finding Safe Zones of policies Markov Decision Processes

no code implementations23 Feb 2022 Lee Cohen, Yishay Mansour, Michal Moshkovitz

Given a policy of a Markov Decision Process, we define a SafeZone as a subset of states, such that most of the policy's trajectories are confined to this subset.

Dueling Bandits with Team Comparisons

no code implementations NeurIPS 2021 Lee Cohen, Ulrike Schmidt-Kraepelin, Yishay Mansour

We introduce the dueling teams problem, a new online-learning setting in which the learner observes noisy comparisons of disjoint pairs of $k$-sized teams from a universe of $n$ players.

Sample Complexity of Uniform Convergence for Multicalibration

no code implementations NeurIPS 2020 Eliran Shabat, Lee Cohen, Yishay Mansour

There is a growing interest in societal concerns in machine learning systems, especially in fairness.

Fairness

Efficient candidate screening under multiple tests and implications for fairness

no code implementations27 May 2019 Lee Cohen, Zachary C. Lipton, Yishay Mansour

We analyze the optimal employer policy both when the employer sets a fixed number of tests per candidate and when the employer can set a dynamic policy, assigning further tests adaptively based on results from the previous tests.

Fairness

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