Search Results for author: Zhixiong Yang

Found 8 papers, 4 papers with code

A Meta-Learning Based Gradient Descent Algorithm for MU-MIMO Beamforming

no code implementations24 Oct 2022 Jing-Yuan Xia, Zhixiong Yang, Tong Qiu, Huaizhang Liao, Deniz Gunduz

Multi-user multiple-input multiple-output (MU-MIMO) beamforming design is typically formulated as a non-convex weighted sum rate (WSR) maximization problem that is known to be NP-hard.

Meta-Learning

ProCo: Prototype-aware Contrastive Learning for Long-tailed Medical Image Classification

1 code implementation1 Sep 2022 Zhixiong Yang, Junwen Pan, Yanzhan Yang, Xiaozhou Shi, Hong-Yu Zhou, Zhicheng Zhang, Cheng Bian

The overall framework, namely as Prototype-aware Contrastive learning (ProCo), is unified as a single-stage pipeline in an end-to-end manner to alleviate the imbalanced problem in medical image classification, which is also a distinct progress than existing works as they follow the traditional two-stage pipeline.

Contrastive Learning Image Classification +1

A Learning Aided Flexible Gradient Descent Approach to MISO Beamforming

1 code implementation21 Jun 2022 Zhixiong Yang, Jing-Yuan Xia, Junshan Luo, Shuanghui Zhang, Deniz Gündüz

This paper proposes a learning aided gradient descent (LAGD) algorithm to solve the weighted sum rate (WSR) maximization problem for multiple-input single-output (MISO) beamforming.

DURRNet: Deep Unfolded Single Image Reflection Removal Network

no code implementations12 Mar 2022 Jun-Jie Huang, Tianrui Liu, Zhixiong Yang, Shaojing Fu, Wentao Zhao, Pier Luigi Dragotti

With the deep unrolling technique, we build the DURRNet with ProxNets to model natural image priors and ProxInvNets which are constructed with invertible networks to impose the exclusion prior.

blind source separation Reflection Removal +1

GIPA: General Information Propagation Algorithm for Graph Learning

2 code implementations13 May 2021 Qinkai Zheng, Houyi Li, Peng Zhang, Zhixiong Yang, Guowei Zhang, Xintan Zeng, Yongchao Liu

Graph neural networks (GNNs) have been popularly used in analyzing graph-structured data, showing promising results in various applications such as node classification, link prediction and network recommendation.

Graph Attention Graph Learning +2

Adversary-resilient Distributed and Decentralized Statistical Inference and Machine Learning: An Overview of Recent Advances Under the Byzantine Threat Model

no code implementations23 Aug 2019 Zhixiong Yang, Arpita Gang, Waheed U. Bajwa

While the last few decades have witnessed a huge body of work devoted to inference and learning in distributed and decentralized setups, much of this work assumes a non-adversarial setting in which individual nodes---apart from occasional statistical failures---operate as intended within the algorithmic framework.

Decision Making

BRIDGE: Byzantine-resilient Decentralized Gradient Descent

2 code implementations21 Aug 2019 Cheng Fang, Zhixiong Yang, Waheed U. Bajwa

The focus of this paper is on robustification of decentralized learning in the presence of nodes that have undergone Byzantine failures.

BIG-bench Machine Learning

ByRDiE: Byzantine-resilient distributed coordinate descent for decentralized learning

no code implementations28 Aug 2017 Zhixiong Yang, Waheed U. Bajwa

Distributed machine learning algorithms enable learning of models from datasets that are distributed over a network without gathering the data at a centralized location.

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