Search Results for author: Cheng-Lin Liu

Found 55 papers, 21 papers with code

Unified Entropy Optimization for Open-Set Test-Time Adaptation

2 code implementations9 Apr 2024 Zhengqing Gao, Xu-Yao Zhang, Cheng-Lin Liu

To address these issues, we propose a simple but effective framework called unified entropy optimization (UniEnt), which is capable of simultaneously adapting to covariate-shifted in-distribution (csID) data and detecting covariate-shifted out-of-distribution (csOOD) data.

Test-time Adaptation

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

Ensemble Quadratic Assignment Network for Graph Matching

no code implementations11 Mar 2024 Haoru Tan, Chuang Wang, Sitong Wu, Xu-Yao Zhang, Fei Yin, Cheng-Lin Liu

In this paper, we propose a graph neural network (GNN) based approach to combine the advantages of data-driven and traditional methods.

3D Shape Classification Graph Matching

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

LANS: A Layout-Aware Neural Solver for Plane Geometry Problem

no code implementations25 Nov 2023 Zhong-Zhi Li, Ming-Liang Zhang, Fei Yin, Cheng-Lin Liu

Existing neural solvers take GPS as a vision-language task but are short in the representation of geometry diagrams that carry rich and complex layout information.

Geometry Problem Solving Language Modelling

Unified Classification and Rejection: A One-versus-All Framework

1 code implementation22 Nov 2023 Zhen Cheng, Xu-Yao Zhang, Cheng-Lin Liu

Previous methods mostly take post-training score transformation or hybrid models to ensure low scores on OOD inputs while separating known classes.

Binary Classification Classification +1

Towards Reliable Domain Generalization: A New Dataset and Evaluations

no code implementations12 Sep 2023 Jiao Zhang, Xu-Yao Zhang, Cheng-Lin Liu

We advocate that researchers in the DG community refer to dynamic performance of methods for more comprehensive and reliable evaluation.

Domain Generalization

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

On the Hidden Mystery of OCR in Large Multimodal Models

1 code implementation13 May 2023 Yuliang Liu, Zhang Li, Biao Yang, Chunyuan Li, XuCheng Yin, Cheng-Lin Liu, Lianwen Jin, Xiang Bai

In this paper, we conducted a comprehensive evaluation of Large Multimodal Models, such as GPT4V and Gemini, in various text-related visual tasks including Text Recognition, Scene Text-Centric Visual Question Answering (VQA), Document-Oriented VQA, Key Information Extraction (KIE), and Handwritten Mathematical Expression Recognition (HMER).

Key Information Extraction Nutrition +4

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).

Cross-Modal Causal Intervention for Medical Report Generation

2 code implementations16 Mar 2023 Weixing Chen, Yang Liu, Ce Wang, Jiarui Zhu, Shen Zhao, Guanbin Li, Cheng-Lin Liu, Liang Lin

Medical report generation (MRG) is essential for computer-aided diagnosis and medication guidance, which can relieve the heavy burden of radiologists by automatically generating the corresponding medical reports according to the given radiology image.

Medical Report Generation object-detection +1

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

A Multi-Modal Neural Geometric Solver with Textual Clauses Parsed from Diagram

1 code implementation22 Feb 2023 Ming-Liang Zhang, Fei Yin, Cheng-Lin Liu

Geometry problem solving (GPS) is a high-level mathematical reasoning requiring the capacities of multi-modal fusion and geometric knowledge application.

Geometry Problem Solving

Visual Traffic Knowledge Graph Generation from Scene Images

no code implementations ICCV 2023 Yunfei Guo, Fei Yin, Xiao-Hui Li, Xudong Yan, Tao Xue, Shuqi Mei, Cheng-Lin Liu

Although previous works on traffic scene understanding have achieved great success, most of them stop at a lowlevel perception stage, such as road segmentation and lane detection, and few concern high-level understanding.

Graph Attention Graph Generation +4

Biologically Plausible Training of Deep Neural Networks Using a Top-down Credit Assignment Network

no code implementations1 Aug 2022 Jian-Hui Chen, Cheng-Lin Liu, Zuoren Wang

We further introduce a brain-inspired credit diffusion mechanism, significantly reducing the TDCA-network's parameter complexity, thereby greatly accelerating training without compromising the network's performance. Our experiments involving non-convex function optimization, supervised learning, and reinforcement learning reveal that a well-trained TDCA-network outperforms back-propagation across various settings.

Biologically-plausible Training reinforcement-learning

Plane Geometry Diagram Parsing

1 code implementation19 May 2022 Ming-Liang Zhang, Fei Yin, Yi-Han Hao, Cheng-Lin Liu

Geometry diagram parsing plays a key role in geometry problem solving, wherein the primitive extraction and relation parsing remain challenging due to the complex layout and between-primitive relationship.

Geometry Problem Solving Instance Segmentation +4

Unsupervised Structure-Texture Separation Network for Oracle Character Recognition

1 code implementation13 May 2022 Mei Wang, Weihong Deng, Cheng-Lin Liu

Second, transformation is achieved via swapping the learned textures across domains and a classifier for final classification is trained to predict the labels of the transformed scanned characters.

Disentanglement Unsupervised Domain Adaptation

Document Dewarping with Control Points

1 code implementation20 Mar 2022 Guo-Wang Xie, Fei Yin, Xu-Yao Zhang, Cheng-Lin Liu

In this paper, we propose a simple yet effective approach to rectify distorted document image by estimating control points and reference points.

Optical Character Recognition (OCR)

Emergence of Machine Language: Towards Symbolic Intelligence with Neural Networks

no code implementations14 Jan 2022 Yuqi Wang, Xu-Yao Zhang, Cheng-Lin Liu, Zhaoxiang Zhang

Moreover, through experiments we show that discrete language representation has several advantages compared with continuous feature representation, from the aspects of interpretability, generalization, and robustness.

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

Proxy Graph Matching with Proximal Matching Networks

no code implementations AAAI 2021 Haoru Tan, Chuang Wang, Sitong Wu, Tie-Qiang Wang, Xu-Yao Zhang, Cheng-Lin Liu

It consists of three parts: a graph neural network to generate a high-level local feature, an attention-based module to normalize the rotational transform, and a global feature matching module based on proximal optimization.

Graph Matching

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

Semantic-Aware Video Text Detection

no code implementations CVPR 2021 Wei Feng, Fei Yin, Xu-Yao Zhang, Cheng-Lin Liu

To overcome the lack of character-level annotations, we propose a novel weakly-supervised character center detection module, which only uses word-level annotated real images to generate character-level labels.

Text Detection

Dewarping Document Image By Displacement Flow Estimation with Fully Convolutional Network

1 code implementation14 Apr 2021 Guo-Wang Xie, Fei Yin, Xu-Yao Zhang, Cheng-Lin Liu

As camera-based documents are increasingly used, the rectification of distorted document images becomes a need to improve the recognition performance.

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

Weakly-Supervised Arbitrary-Shaped Text Detection with Expectation-Maximization Algorithm

no code implementations1 Dec 2020 Mengbiao Zhao, Wei Feng, Fei Yin, Xu-Yao Zhang, Cheng-Lin Liu

We propose an Expectation-Maximization (EM) based weakly-supervised learning framework to train an accurate arbitrary-shaped text detector using only a small amount of polygon-level annotated data combined with a large amount of weakly annotated data.

Text Detection Weakly-supervised Learning

Towards Robust Pattern Recognition: A Review

no code implementations12 Jun 2020 Xu-Yao Zhang, Cheng-Lin Liu, Ching Y. Suen

The accuracies for many pattern recognition tasks have increased rapidly year by year, achieving or even outperforming human performance.

Arbitrary Shape Scene Text Detection with Adaptive Text Region Representation

no code implementations CVPR 2019 Xiaobing Wang, Yingying Jiang, Zhenbo Luo, Cheng-Lin Liu, Hyun-Soo Choi, Sungjin Kim

Here, recurrent neural network based adaptive text region representation is proposed for text region refinement, where a pair of boundary points are predicted each time step until no new points are found.

Region Proposal Scene Text Detection +2

BlockQNN: Efficient Block-wise Neural Network Architecture Generation

2 code implementations16 Aug 2018 Zhao Zhong, Zichen Yang, Boyang Deng, Junjie Yan, Wei Wu, Jing Shao, Cheng-Lin Liu

The block-wise generation brings unique advantages: (1) it yields state-of-the-art results in comparison to the hand-crafted networks on image classification, particularly, the best network generated by BlockQNN achieves 2. 35% top-1 error rate on CIFAR-10.

Image Classification Q-Learning

SCAN: Sliding Convolutional Attention Network for Scene Text Recognition

no code implementations2 Jun 2018 Yi-Chao Wu, Fei Yin, Xu-Yao Zhang, Li Liu, Cheng-Lin Liu

Scene text recognition has drawn great attentions in the community of computer vision and artificial intelligence due to its challenges and wide applications.

Scene Text Recognition

Scene Text Recognition with Sliding Convolutional Character Models

no code implementations6 Sep 2017 Fei Yin, Yi-Chao Wu, Xu-Yao Zhang, Cheng-Lin Liu

In this paper, we investigate the intrinsic characteristics of text recognition, and inspired by human cognition mechanisms in reading texts, we propose a scene text recognition method with character models on convolutional feature map.

Scene Text Recognition

Drawing and Recognizing Chinese Characters with Recurrent Neural Network

1 code implementation21 Jun 2016 Xu-Yao Zhang, Fei Yin, Yan-Ming Zhang, Cheng-Lin Liu, Yoshua Bengio

In this paper, we propose a framework by using the recurrent neural network (RNN) as both a discriminative model for recognizing Chinese characters and a generative model for drawing (generating) Chinese characters.

Handwriting Recognition

Online and Offline Handwritten Chinese Character Recognition: A Comprehensive Study and New Benchmark

no code implementations18 Jun 2016 Xu-Yao Zhang, Yoshua Bengio, Cheng-Lin Liu

Furthermore, although directMap+convNet can achieve the best results and surpass human-level performance, we show that writer adaptation in this case is still effective.

Data Augmentation Offline Handwritten Chinese Character Recognition

Natural Scene Character Recognition Using Robust PCA and Sparse Representation

no code implementations15 Jun 2016 Zheng Zhang, Yong Xu, Cheng-Lin Liu

Natural scene character recognition is challenging due to the cluttered background, which is hard to separate from text.

Hybrid CNN and Dictionary-Based Models for Scene Recognition and Domain Adaptation

no code implementations29 Jan 2016 Guo-Sen Xie, Xu-Yao Zhang, Shuicheng Yan, Cheng-Lin Liu

Learned from a large-scale training dataset, CNN features are much more discriminative and accurate than the hand-crafted features.

Clustering Domain Adaptation +1

A Fast Projected Fixed-Point Algorithm for Large Graph Matching

1 code implementation3 Jul 2012 Yao Lu, Kai-Zhu Huang, Cheng-Lin Liu

In particular, with high accuracy, our algorithm takes only a few seconds (in a PC) to match two graphs of 1, 000 nodes.

Graph Matching

Robust Metric Learning by Smooth Optimization

no code implementations15 Mar 2012 Kaizhu Huang, Rong Jin, Zenglin Xu, Cheng-Lin Liu

Most existing distance metric learning methods assume perfect side information that is usually given in pairwise or triplet constraints.

Combinatorial Optimization Metric Learning

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