Search Results for author: Fei Zhu

Found 28 papers, 9 papers with code

Branch-Tuning: Balancing Stability and Plasticity for Continual Self-Supervised Learning

no code implementations27 Mar 2024 Wenzhuo LIU, Fei Zhu, Cheng-Lin Liu

Self-supervised learning (SSL) has emerged as an effective paradigm for deriving general representations from vast amounts of unlabeled data.

Continual Learning Self-Supervised Learning

Towards Non-Exemplar Semi-Supervised Class-Incremental Learning

no code implementations27 Mar 2024 Wenzhuo LIU, Fei Zhu, Cheng-Lin Liu

On the other hand, Semi-IPC learns a prototype for each class with unsupervised regularization, enabling the model to incrementally learn from partially labeled new data while maintaining the knowledge of old classes.

Class Incremental Learning Contrastive Learning +1

Multi-scale Unified Network for Image Classification

no code implementations27 Mar 2024 Wenzhuo LIU, Fei Zhu, Cheng-Lin Liu

Convolutional Neural Networks (CNNs) have advanced significantly in visual representation learning and recognition.

Classification Computational Efficiency +2

Active Generalized Category Discovery

1 code implementation7 Mar 2024 Shijie Ma, Fei Zhu, Zhun Zhong, Xu-Yao Zhang, Cheng-Lin Liu

Generalized Category Discovery (GCD) is a pragmatic and challenging open-world task, which endeavors to cluster unlabeled samples from both novel and old classes, leveraging some labeled data of old classes.

Active Learning imbalanced classification +1

Revisiting Confidence Estimation: Towards Reliable Failure Prediction

1 code implementation5 Mar 2024 Fei Zhu, Xu-Yao Zhang, Zhen Cheng, Cheng-Lin Liu

Reliable confidence estimation is a challenging yet fundamental requirement in many risk-sensitive applications.

Open-world Machine Learning: A Review and New Outlooks

no code implementations4 Mar 2024 Fei Zhu, Shijie Ma, Zhen Cheng, Xu-Yao Zhang, Zhaoxiang Zhang, Cheng-Lin Liu

This paper aims to provide a comprehensive introduction to the emerging open-world machine learning paradigm, to help researchers build more powerful AI systems in their respective fields, and to promote the development of artificial general intelligence.

Class Incremental Learning Incremental Learning +1

Federated Class-Incremental Learning with Prototype Guided Transformer

no code implementations4 Jan 2024 Haiyang Guo, Fei Zhu, Wenzhuo LIU, Xu-Yao Zhang, Cheng-Lin Liu

On the other hand, our approach utilizes a pre-trained model as the backbone and utilizes LoRA to fine-tune with a tiny amount of parameters when learning new classes.

Class Incremental Learning Federated Learning +1

Class Incremental Learning with Self-Supervised Pre-Training and Prototype Learning

no code implementations4 Aug 2023 Wenzhuo LIU, Xinjian Wu, Fei Zhu, Mingming Yu, Chuang Wang, Cheng-Lin Liu

This is hard for DNN because it tends to focus on fitting to new classes while ignoring old classes, a phenomenon known as catastrophic forgetting.

Class Incremental Learning Incremental Learning +2

Towards Trustworthy Dataset Distillation

1 code implementation18 Jul 2023 Shijie Ma, Fei Zhu, Zhen Cheng, Xu-Yao Zhang

By distilling both InD samples and outliers, the condensed datasets are capable to train models competent in both InD classification and OOD detection.

OpenMix: Exploring Outlier Samples for Misclassification Detection

1 code implementation CVPR 2023 Fei Zhu, Zhen Cheng, Xu-Yao Zhang, Cheng-Lin Liu

Reliable confidence estimation for deep neural classifiers is a challenging yet fundamental requirement in high-stakes applications.

World Knowledge

Dynamics-Aware Loss for Learning with Label Noise

1 code implementation21 Mar 2023 Xiu-Chuan Li, Xiaobo Xia, Fei Zhu, Tongliang Liu, Xu-Yao Zhang, Cheng-Lin Liu

Label noise poses a serious threat to deep neural networks (DNNs).

Nonlinear Hyperspectral Unmixing based on Multilinear Mixing Model using Convolutional Autoencoders

no code implementations14 Mar 2023 Tingting Fang, Fei Zhu, Jie Chen

Current deep learning-based nonlinear unmixing focuses on the models in additive, bilinear-based formulations.

Hyperspectral Unmixing

Rethinking Confidence Calibration for Failure Prediction

1 code implementation6 Mar 2023 Fei Zhu, Zhen Cheng, Xu-Yao Zhang, Cheng-Lin Liu

We investigate this problem and reveal that popular confidence calibration methods often lead to worse confidence separation between correct and incorrect samples, making it more difficult to decide whether to trust a prediction or not.

Average of Pruning: Improving Performance and Stability of Out-of-Distribution Detection

no code implementations2 Mar 2023 Zhen Cheng, Fei Zhu, Xu-Yao Zhang, Cheng-Lin Liu

Detecting Out-of-distribution (OOD) inputs have been a critical issue for neural networks in the open world.

Out-of-Distribution Detection

Class-Incremental Learning via Dual Augmentation

2 code implementations NeurIPS 2021 Fei Zhu, Zhen Cheng, Xu-Yao Zhang, Cheng-Lin Liu

Deep learning systems typically suffer from catastrophic forgetting of past knowledge when acquiring new skills continually.

Class Incremental Learning Incremental Learning

Delving into Feature Space: Improving Adversarial Robustness by Feature Spectral Regularization

no code implementations29 Sep 2021 Zhen Cheng, Fei Zhu, Xu-Yao Zhang, Cheng-Lin Liu

Comprehensive experiments demonstrate that FSR is effective to alleviate the dominance of larger eigenvalues and improve adversarial robustness on different datasets.

Adversarial Robustness Attribute

Prototype Augmentation and Self-Supervision for Incremental Learning

1 code implementation CVPR 2021 Fei Zhu, Xu-Yao Zhang, Chuang Wang, Fei Yin, Cheng-Lin Liu

Despite the impressive performance in many individual tasks, deep neural networks suffer from catastrophic forgetting when learning new tasks incrementally.

Incremental Learning Self-Supervised Learning

Misclassification Detection via Class Augmentation

no code implementations1 Jan 2021 Fei Zhu, Xu-Yao Zhang, Chuang Wang, Cheng-Lin Liu

In spite of the simplicity, extensive experiments demonstrate that the misclassification detection performance of DNNs can be significantly improved by seeing more generated pseudo-classes during training.

Few-Shot Learning

Improving Deep Hyperspectral Image Classification Performance with Spectral Unmixing

no code implementations1 Apr 2020 Alan J. X. Guo, Fei Zhu

Recent advances in neural networks have made great progress in the hyperspectral image (HSI) classification.

Classification General Classification +1

Hyperspectral Image Classification with Deep Metric Learning and Conditional Random Field

no code implementations4 Mar 2019 Yi Liang, Xin Zhao, Alan J. X. Guo, Fei Zhu

To improve the classification performance in the context of hyperspectral image processing, many works have been developed based on two common strategies, namely the spatial-spectral information integration and the utilization of neural networks.

Ranked #8 on Hyperspectral Image Classification on Indian Pines (Overall Accuracy metric)

General Classification Hyperspectral Image Classification +3

A CNN-based Spatial Feature Fusion Algorithm for Hyperspectral Imagery Classification

no code implementations31 Jan 2018 Alan J. X. Guo, Fei Zhu

At the testing stage, by applying the discriminant model to the pixel-pairs generated by the test pixel and its neighbors, the local structure is estimated and represented as a customized convolutional kernel.

General Classification

Spectral-Spatial Feature Extraction and Classification by ANN Supervised with Center Loss in Hyperspectral Imagery

no code implementations20 Nov 2017 Alan J. X. Guo, Fei Zhu

In this paper, we propose a spectral-spatial feature extraction and classification framework based on artificial neuron network (ANN) in the context of hyperspectral imagery.

Face Recognition General Classification

Correntropy Maximization via ADMM - Application to Robust Hyperspectral Unmixing

no code implementations4 Feb 2016 Fei Zhu, Abderrahim Halimi, Paul Honeine, Badong Chen, Nanning Zheng

In hyperspectral images, some spectral bands suffer from low signal-to-noise ratio due to noisy acquisition and atmospheric effects, thus requiring robust techniques for the unmixing problem.

Hyperspectral Unmixing

Bi-Objective Nonnegative Matrix Factorization: Linear Versus Kernel-Based Models

no code implementations22 Jan 2015 Paul Honeine, Fei Zhu

Nonnegative matrix factorization (NMF) is a powerful class of feature extraction techniques that has been successfully applied in many fields, namely in signal and image processing.

Kernel Nonnegative Matrix Factorization Without the Curse of the Pre-image - Application to Unmixing Hyperspectral Images

no code implementations16 Jul 2014 Fei Zhu, Paul Honeine, Maya Kallas

The nonnegative matrix factorization (NMF) is widely used in signal and image processing, including bio-informatics, blind source separation and hyperspectral image analysis in remote sensing.

blind source separation Hyperspectral image analysis

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