Search Results for author: Udi Wieder

Found 6 papers, 2 papers with code

Loss Minimization through the Lens of Outcome Indistinguishability

no code implementations16 Oct 2022 Parikshit Gopalan, Lunjia Hu, Michael P. Kim, Omer Reingold, Udi Wieder

This decomposition highlights the utility of a new multi-group fairness notion that we call calibrated multiaccuracy, which lies in between multiaccuracy and multicalibration.

Fairness

KL Divergence Estimation with Multi-group Attribution

1 code implementation28 Feb 2022 Parikshit Gopalan, Nina Narodytska, Omer Reingold, Vatsal Sharan, Udi Wieder

Estimating the Kullback-Leibler (KL) divergence between two distributions given samples from them is well-studied in machine learning and information theory.

Fairness

Omnipredictors

no code implementations11 Sep 2021 Parikshit Gopalan, Adam Tauman Kalai, Omer Reingold, Vatsal Sharan, Udi Wieder

We suggest a rigorous new paradigm for loss minimization in machine learning where the loss function can be ignored at the time of learning and only be taken into account when deciding an action.

Fairness

Multicalibrated Partitions for Importance Weights

no code implementations10 Mar 2021 Parikshit Gopalan, Omer Reingold, Vatsal Sharan, Udi Wieder

We significantly strengthen previous work that use the MaxEntropy approach, that define the importance weights based on a distribution $Q$ closest to $P$, that looks the same as $R$ on every set $C \in \mathcal{C}$, where $\mathcal{C}$ may be a huge collection of sets.

Anomaly Detection Domain Adaptation

Efficient Anomaly Detection via Matrix Sketching

no code implementations NeurIPS 2018 Vatsal Sharan, Parikshit Gopalan, Udi Wieder

We consider the problem of finding anomalies in high-dimensional data using popular PCA based anomaly scores.

Anomaly Detection

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