Search Results for author: Yongkai Wu

Found 17 papers, 6 papers with code

Long-Term Fair Decision Making through Deep Generative Models

1 code implementation20 Jan 2024 Yaowei Hu, Yongkai Wu, Lu Zhang

This paper studies long-term fair machine learning which aims to mitigate group disparity over the long term in sequential decision-making systems.

Decision Making Fairness

Coupling Fairness and Pruning in a Single Run: a Bi-level Optimization Perspective

no code implementations15 Dec 2023 Yucong Dai, Gen Li, Feng Luo, Xiaolong Ma, Yongkai Wu

To address this, we define a fair pruning task where a sparse model is derived subject to fairness requirements.

Fairness Model Compression

SiDA: Sparsity-Inspired Data-Aware Serving for Efficient and Scalable Large Mixture-of-Experts Models

no code implementations29 Oct 2023 Zhixu Du, Shiyu Li, Yuhao Wu, Xiangyu Jiang, Jingwei Sun, Qilin Zheng, Yongkai Wu, Ang Li, Hai "Helen" Li, Yiran Chen

Specifically, SiDA attains a remarkable speedup in MoE inference with up to 3. 93X throughput increasing, up to 75% latency reduction, and up to 80% GPU memory saving with down to 1% performance drop.

Algorithmic Recourse for Anomaly Detection in Multivariate Time Series

no code implementations28 Sep 2023 Xiao Han, Lu Zhang, Yongkai Wu, Shuhan Yuan

Anomaly detection in multivariate time series has received extensive study due to the wide spectrum of applications.

Anomaly Detection Time Series +1

Local Differential Privacy in Graph Neural Networks: a Reconstruction Approach

1 code implementation15 Sep 2023 Karuna Bhaila, Wen Huang, Yongkai Wu, Xintao Wu

We focus on a decentralized notion of Differential Privacy, namely Local Differential Privacy, and apply randomization mechanisms to perturb both feature and label data at the node level before the data is collected by a central server for model training.

Learning Causally Disentangled Representations via the Principle of Independent Causal Mechanisms

1 code implementation2 Jun 2023 Aneesh Komanduri, Yongkai Wu, Feng Chen, Xintao Wu

We propose ICM-VAE, a framework for learning causally disentangled representations supervised by causally related observed labels.

counterfactual Disentanglement

Achieving Counterfactual Fairness for Anomaly Detection

1 code implementation4 Mar 2023 Xiao Han, Lu Zhang, Yongkai Wu, Shuhan Yuan

Ensuring fairness in anomaly detection models has received much attention recently as many anomaly detection applications involve human beings.

Anomaly Detection counterfactual +1

On Root Cause Localization and Anomaly Mitigation through Causal Inference

1 code implementation8 Dec 2022 Xiao Han, Lu Zhang, Yongkai Wu, Shuhan Yuan

After that, we further propose an anomaly mitigation approach that aims to recommend mitigation actions on abnormal features to revert the abnormal outcomes such that the counterfactuals guided by the causal mechanism are normal.

Anomaly Detection Causal Inference

Fairness through Equality of Effort

no code implementations11 Nov 2019 Wen Huang, Yongkai Wu, Lu Zhang, Xintao Wu

We develop algorithms for determining whether an individual or a group of individuals is discriminated in terms of equality of effort.

BIG-bench Machine Learning counterfactual +1

PC-Fairness: A Unified Framework for Measuring Causality-based Fairness

no code implementations NeurIPS 2019 Yongkai Wu, Lu Zhang, Xintao Wu, Hanghang Tong

A recent trend of fair machine learning is to define fairness as causality-based notions which concern the causal connection between protected attributes and decisions.

counterfactual Fairness

Fairness-aware Classification: Criterion, Convexity, and Bounds

no code implementations13 Sep 2018 Yongkai Wu, Lu Zhang, Xintao Wu

In this paper, we propose a general framework for learning fair classifiers which addresses previous limitations.

Classification Computational Efficiency +2

On Discrimination Discovery and Removal in Ranked Data using Causal Graph

no code implementations5 Mar 2018 Yongkai Wu, Lu Zhang, Xintao Wu

Existing methods in fairness-aware ranking are mainly based on statistical parity that cannot measure the true discriminatory effect since discrimination is causal.

Fairness

Achieving non-discrimination in prediction

no code implementations28 Feb 2017 Lu Zhang, Yongkai Wu, Xintao Wu

Based on the results, we develop a two-phase framework for constructing a discrimination-free classifier with a theoretical guarantee.

Achieving non-discrimination in data release

no code implementations22 Nov 2016 Lu Zhang, Yongkai Wu, Xintao Wu

Discrimination discovery and prevention/removal are increasingly important tasks in data mining.

Attribute

A causal framework for discovering and removing direct and indirect discrimination

no code implementations22 Nov 2016 Lu Zhang, Yongkai Wu, Xintao Wu

In this paper, we investigate the problem of discovering both direct and indirect discrimination from the historical data, and removing the discriminatory effects before the data is used for predictive analysis (e. g., building classifiers).

Decision Making

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