Search Results for author: Dixian Zhu

Found 7 papers, 4 papers with code

Function Aligned Regression: A Method Explicitly Learns Functional Derivatives from Data

1 code implementation8 Feb 2024 Dixian Zhu, Livnat Jerby

Regression is a fundamental task in machine learning that has garnered extensive attention over the past decades.

regression

Non-Smooth Weakly-Convex Finite-sum Coupled Compositional Optimization

no code implementations NeurIPS 2023 Quanqi Hu, Dixian Zhu, Tianbao Yang

This paper investigates new families of compositional optimization problems, called $\underline{\bf n}$on-$\underline{\bf s}$mooth $\underline{\bf w}$eakly-$\underline{\bf c}$onvex $\underline{\bf f}$inite-sum $\underline{\bf c}$oupled $\underline{\bf c}$ompositional $\underline{\bf o}$ptimization (NSWC FCCO).

LibAUC: A Deep Learning Library for X-Risk Optimization

1 code implementation5 Jun 2023 Zhuoning Yuan, Dixian Zhu, Zi-Hao Qiu, Gang Li, Xuanhui Wang, Tianbao Yang

This paper introduces the award-winning deep learning (DL) library called LibAUC for implementing state-of-the-art algorithms towards optimizing a family of risk functions named X-risks.

Benchmarking Classification +2

Provable Multi-instance Deep AUC Maximization with Stochastic Pooling

1 code implementation14 May 2023 Dixian Zhu, Bokun Wang, Zhi Chen, Yaxing Wang, Milan Sonka, Xiaodong Wu, Tianbao Yang

This paper considers a novel application of deep AUC maximization (DAM) for multi-instance learning (MIL), in which a single class label is assigned to a bag of instances (e. g., multiple 2D slices of a CT scan for a patient).

Stochastic Optimization

Benchmarking Deep AUROC Optimization: Loss Functions and Algorithmic Choices

no code implementations27 Mar 2022 Dixian Zhu, Xiaodong Wu, Tianbao Yang

(i) We benchmark a variety of loss functions with different algorithmic choices for deep AUROC optimization problem.

Benchmarking imbalanced classification

When AUC meets DRO: Optimizing Partial AUC for Deep Learning with Non-Convex Convergence Guarantee

no code implementations1 Mar 2022 Dixian Zhu, Gang Li, Bokun Wang, Xiaodong Wu, Tianbao Yang

In this paper, we propose systematic and efficient gradient-based methods for both one-way and two-way partial AUC (pAUC) maximization that are applicable to deep learning.

Label Distributionally Robust Losses for Multi-class Classification: Consistency, Robustness and Adaptivity

1 code implementation30 Dec 2021 Dixian Zhu, Yiming Ying, Tianbao Yang

We study a family of loss functions named label-distributionally robust (LDR) losses for multi-class classification that are formulated from distributionally robust optimization (DRO) perspective, where the uncertainty in the given label information are modeled and captured by taking the worse case of distributional weights.

Classification Consistency Multi-class Classification

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