Search Results for author: Lydia T. Liu

Found 11 papers, 4 papers with code

On the Actionability of Outcome Prediction

no code implementations8 Sep 2023 Lydia T. Liu, Solon Barocas, Jon Kleinberg, Karen Levy

Through a simple model encompassing actions, latent states, and measurements, we demonstrate that pure outcome prediction rarely results in the most effective policy for taking actions, even when combined with other measurements.

Lost in Translation: Reimagining the Machine Learning Life Cycle in Education

no code implementations8 Sep 2022 Lydia T. Liu, Serena Wang, Tolani Britton, Rediet Abebe

We find that a cross-disciplinary gap exists and is particularly salient in two parts of the ML life cycle: the formulation of an ML problem from education goals and the translation of predictions to interventions.

Translation

Strategic Ranking

no code implementations16 Sep 2021 Lydia T. Liu, Nikhil Garg, Christian Borgs

Strategic classification studies the design of a classifier robust to the manipulation of input by strategic individuals.

Bandit Learning in Decentralized Matching Markets

no code implementations14 Dec 2020 Lydia T. Liu, Feng Ruan, Horia Mania, Michael I. Jordan

We study two-sided matching markets in which one side of the market (the players) does not have a priori knowledge about its preferences for the other side (the arms) and is required to learn its preferences from experience.

Balancing Competing Objectives with Noisy Data: Score-Based Classifiers for Welfare-Aware Machine Learning

1 code implementation ICML 2020 Esther Rolf, Max Simchowitz, Sarah Dean, Lydia T. Liu, Daniel Björkegren, Moritz Hardt, Joshua Blumenstock

Our theoretical results characterize the optimal strategies in this class, bound the Pareto errors due to inaccuracies in the scores, and show an equivalence between optimal strategies and a rich class of fairness-constrained profit-maximizing policies.

BIG-bench Machine Learning Fairness

Competing Bandits in Matching Markets

no code implementations12 Jun 2019 Lydia T. Liu, Horia Mania, Michael. I. Jordan

Stable matching, a classical model for two-sided markets, has long been studied with little consideration for how each side's preferences are learned.

Multi-Armed Bandits

Steerable $e$PCA: Rotationally Invariant Exponential Family PCA

1 code implementation20 Dec 2018 Zhizhen Zhao, Lydia T. Liu, Amit Singer

The second is steerable PCA, a fast and accurate procedure for including all planar rotations for PCA.

The implicit fairness criterion of unconstrained learning

no code implementations29 Aug 2018 Lydia T. Liu, Max Simchowitz, Moritz Hardt

We show that under reasonable conditions, the deviation from satisfying group calibration is upper bounded by the excess risk of the learned score relative to the Bayes optimal score function.

BIG-bench Machine Learning Fairness

On the Local Minima of the Empirical Risk

no code implementations NeurIPS 2018 Chi Jin, Lydia T. Liu, Rong Ge, Michael. I. Jordan

Our objective is to find the $\epsilon$-approximate local minima of the underlying function $F$ while avoiding the shallow local minima---arising because of the tolerance $\nu$---which exist only in $f$.

Delayed Impact of Fair Machine Learning

3 code implementations ICML 2018 Lydia T. Liu, Sarah Dean, Esther Rolf, Max Simchowitz, Moritz Hardt

Fairness in machine learning has predominantly been studied in static classification settings without concern for how decisions change the underlying population over time.

BIG-bench Machine Learning Fairness

$e$PCA: High Dimensional Exponential Family PCA

1 code implementation17 Nov 2016 Lydia T. Liu, Edgar Dobriban, Amit Singer

We develop $e$PCA (exponential family PCA), a new methodology for PCA on exponential family distributions.

Methodology

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