Search Results for author: Romain Camilleri

Found 6 papers, 1 papers with code

Fair Active Learning in Low-Data Regimes

no code implementations13 Dec 2023 Romain Camilleri, Andrew Wagenmaker, Jamie Morgenstern, Lalit Jain, Kevin Jamieson

In this work, we address the challenges of reducing bias and improving accuracy in data-scarce environments, where the cost of collecting labeled data prohibits the use of large, labeled datasets.

Active Learning Fairness

A/B Testing and Best-arm Identification for Linear Bandits with Robustness to Non-stationarity

1 code implementation27 Jul 2023 Zhihan Xiong, Romain Camilleri, Maryam Fazel, Lalit Jain, Kevin Jamieson

For robust identification, it is well-known that if arms are chosen randomly and non-adaptively from a G-optimal design over $\mathcal{X}$ at each time then the error probability decreases as $\exp(-T\Delta^2_{(1)}/d)$, where $\Delta_{(1)} = \min_{x \neq x^*} (x^* - x)^\top \frac{1}{T}\sum_{t=1}^T \theta_t$.

Active Learning with Safety Constraints

no code implementations22 Jun 2022 Romain Camilleri, Andrew Wagenmaker, Jamie Morgenstern, Lalit Jain, Kevin Jamieson

To our knowledge, our results are the first on best-arm identification in linear bandits with safety constraints.

Active Learning Decision Making +1

Nearly Optimal Algorithms for Level Set Estimation

no code implementations2 Nov 2021 Blake Mason, Romain Camilleri, Subhojyoti Mukherjee, Kevin Jamieson, Robert Nowak, Lalit Jain

The threshold value $\alpha$ can either be \emph{explicit} and provided a priori, or \emph{implicit} and defined relative to the optimal function value, i. e. $\alpha = (1-\epsilon)f(x_\ast)$ for a given $\epsilon > 0$ where $f(x_\ast)$ is the maximal function value and is unknown.

Experimental Design

Selective Sampling for Online Best-arm Identification

no code implementations NeurIPS 2021 Romain Camilleri, Zhihan Xiong, Maryam Fazel, Lalit Jain, Kevin Jamieson

The main results of this work precisely characterize this trade-off between labeled samples and stopping time and provide an algorithm that nearly-optimally achieves the minimal label complexity given a desired stopping time.

Binary Classification

High-Dimensional Experimental Design and Kernel Bandits

no code implementations12 May 2021 Romain Camilleri, Julian Katz-Samuels, Kevin Jamieson

We also leverage our new approach in a new algorithm for kernelized bandits to obtain state of the art results for regret minimization and pure exploration.

Experimental Design Vocal Bursts Intensity Prediction

Cannot find the paper you are looking for? You can Submit a new open access paper.