Search Results for author: Zhangkai Wu

Found 7 papers, 1 papers with code

Differentiable Meta-learning Model for Few-shot Semantic Segmentation

no code implementations23 Nov 2019 Pinzhuo Tian, Zhangkai Wu, Lei Qi, Lei Wang, Yinghuan Shi, Yang Gao

To address the annotation scarcity issue in some cases of semantic segmentation, there have been a few attempts to develop the segmentation model in the few-shot learning paradigm.

Few-Shot Semantic Segmentation Object +2

eVAE: Evolutionary Variational Autoencoder

1 code implementation1 Jan 2023 Zhangkai Wu, Longbing Cao, Lei Qi

VAEs still suffer from uncertain tradeoff learning. We propose a novel evolutionary variational autoencoder (eVAE) building on the variational information bottleneck (VIB) theory and integrative evolutionary neural learning.

Disentanglement Image Generation +1

C$^2$VAE: Gaussian Copula-based VAE Differing Disentangled from Coupled Representations with Contrastive Posterior

no code implementations23 Sep 2023 Zhangkai Wu, Longbing Cao

Then, a self-supervised contrastive classifier differentiates the disentangled representations from the coupled representations, where a contrastive loss regularizes this contrastive classification together with the TC loss for eliminating entangled factors and strengthening disentangled representations.

Representation Learning

Weakly Augmented Variational Autoencoder in Time Series Anomaly Detection

no code implementations7 Jan 2024 Zhangkai Wu, Longbing Cao, Qi Zhang, Junxian Zhou, Hui Chen

Due to their unsupervised training and uncertainty estimation, deep Variational Autoencoders (VAEs) have become powerful tools for reconstruction-based Time Series Anomaly Detection (TSAD).

Anomaly Detection Self-Supervised Learning +2

LERENet: Eliminating Intra-class Differences for Metal Surface Defect Few-shot Semantic Segmentation

no code implementations17 Mar 2024 Hanze Ding, Zhangkai Wu, Jiyan Zhang, Ming Ping, Yanfang Liu

Since the relation structure of local features embedded in graph space will help to eliminate \textit{Semantic Difference}, we employ Multi-Prototype Reasoning (MPR) module, extracting local descriptors based prototypes and analyzing local-view feature relevance in support-query pairs.

Defect Detection Few-Shot Semantic Segmentation +1

FedSI: Federated Subnetwork Inference for Efficient Uncertainty Quantification

no code implementations24 Apr 2024 Hui Chen, Hengyu Liu, Zhangkai Wu, Xuhui Fan, Longbing Cao

While deep neural networks (DNNs) based personalized federated learning (PFL) is demanding for addressing data heterogeneity and shows promising performance, existing methods for federated learning (FL) suffer from efficient systematic uncertainty quantification.

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