Search Results for author: Haozhe Liu

Found 26 papers, 16 papers with code

Self-Attention Graph Residual Convolutional Networks for Event Detection with dependency relations

no code implementations Findings (EMNLP) 2021 AnAn Liu, Ning Xu, Haozhe Liu

While existing GCN-based methods explore latent node-to-node dependency relations according to a stationary adjacency tensor, an attention-based dynamic tensor, which can pay much attention to the key node like event trigger or its neighboring nodes, has not been developed.

Event Detection Sentence

Cross-Attention Makes Inference Cumbersome in Text-to-Image Diffusion Models

1 code implementation3 Apr 2024 Wentian Zhang, Haozhe Liu, Jinheng Xie, Francesco Faccio, Mike Zheng Shou, Jürgen Schmidhuber

This study explores the role of cross-attention during inference in text-conditional diffusion models.

Fingerprint Presentation Attack Detector Using Global-Local Model

no code implementations20 Feb 2024 Haozhe Liu, Wentian Zhang, Feng Liu, Haoqian Wu, Linlin Shen

While by using the texture in-painting-based local module, a local spoofness score predicted from fingerprint patches is obtained.

Learning to Identify Critical States for Reinforcement Learning from Videos

1 code implementation ICCV 2023 Haozhe Liu, Mingchen Zhuge, Bing Li, Yuhui Wang, Francesco Faccio, Bernard Ghanem, Jürgen Schmidhuber

Recent work on deep reinforcement learning (DRL) has pointed out that algorithmic information about good policies can be extracted from offline data which lack explicit information about executed actions.

reinforcement-learning

Push the Boundary of SAM: A Pseudo-label Correction Framework for Medical Segmentation

no code implementations2 Aug 2023 Ziyi Huang, Hongshan Liu, Haofeng Zhang, Xueshen Li, Haozhe Liu, Fuyong Xing, Andrew Laine, Elsa Angelini, Christine Hendon, Yu Gan

One key advantage of our model is its ability to train deep networks using SAM-generated pseudo labels without relying on a set of expert-level annotations while attaining good segmentation performance.

Image Segmentation Medical Image Segmentation +4

BoxDiff: Text-to-Image Synthesis with Training-Free Box-Constrained Diffusion

2 code implementations ICCV 2023 Jinheng Xie, Yuexiang Li, Yawen Huang, Haozhe Liu, Wentian Zhang, Yefeng Zheng, Mike Zheng Shou

As such paired data is time-consuming and labor-intensive to acquire and restricted to a closed set, this potentially becomes the bottleneck for applications in an open world.

Conditional Text-to-Image Synthesis Denoising

Dynamically Masked Discriminator for Generative Adversarial Networks

1 code implementation13 Jun 2023 Wentian Zhang, Haozhe Liu, Bing Li, Jinheng Xie, Yawen Huang, Yuexiang Li, Yefeng Zheng, Bernard Ghanem

By treating the generated data in training as a stream, we propose to detect whether the discriminator slows down the learning of new knowledge in generated data.

Continual Learning

Open-World Weakly-Supervised Object Localization

1 code implementation17 Apr 2023 Jinheng Xie, Zhaochuan Luo, Yuexiang Li, Haozhe Liu, Linlin Shen, Mike Zheng Shou

To handle such data, we propose a novel paradigm of contrastive representation co-learning using both labeled and unlabeled data to generate a complete G-CAM (Generalized Class Activation Map) for object localization, without the requirement of bounding box annotation.

Object Representation Learning +1

Improving GAN Training via Feature Space Shrinkage

1 code implementation2 Mar 2023 Haozhe Liu, Wentian Zhang, Bing Li, Haoqian Wu, Nanjun He, Yawen Huang, Yuexiang Li, Bernard Ghanem, Yefeng Zheng

The evaluation results demonstrate that our AdaptiveMix can facilitate the training of GANs and effectively improve the image quality of generated samples.

Out of Distribution (OOD) Detection

AdaptiveMix: Improving GAN Training via Feature Space Shrinkage

1 code implementation CVPR 2023 Haozhe Liu, Wentian Zhang, Bing Li, Haoqian Wu, Nanjun He, Yawen Huang, Yuexiang Li, Bernard Ghanem, Yefeng Zheng

The evaluation results demonstrate that our AdaptiveMix can facilitate the training of GANs and effectively improve the image quality of generated samples.

Out of Distribution (OOD) Detection

Decoupled Mixup for Generalized Visual Recognition

1 code implementation26 Oct 2022 Haozhe Liu, Wentian Zhang, Jinheng Xie, Haoqian Wu, Bing Li, Ziqi Zhang, Yuexiang Li, Yawen Huang, Bernard Ghanem, Yefeng Zheng

Since the observation is that noise-prone regions such as textural and clutter backgrounds are adverse to the generalization ability of CNN models during training, we enhance features from discriminative regions and suppress noise-prone ones when combining an image pair.

A Uniform Representation Learning Method for OCT-based Fingerprint Presentation Attack Detection and Reconstruction

no code implementations25 Sep 2022 Wentian Zhang, Haozhe Liu, Feng Liu, Raghavendra Ramachandra

For reconstruction performance, our method achieves the best performance with 0. 834 mIOU and 0. 937 PA. By comparing with the recognition performance on surface 2D fingerprints, the effectiveness of our proposed method on high quality subsurface fingerprint reconstruction is further proved.

Representation Learning Semantic Segmentation

A Benchmark for Weakly Semi-Supervised Abnormality Localization in Chest X-Rays

1 code implementation5 Sep 2022 Haoqin Ji, Haozhe Liu, Yuexiang Li, Jinheng Xie, Nanjun He, Yawen Huang, Dong Wei, Xinrong Chen, Linlin Shen, Yefeng Zheng

Such a point annotation setting can provide weakly instance-level information for abnormality localization with a marginal annotation cost.

Combating Mode Collapse in GANs via Manifold Entropy Estimation

1 code implementation25 Aug 2022 Haozhe Liu, Bing Li, Haoqian Wu, Hanbang Liang, Yawen Huang, Yuexiang Li, Bernard Ghanem, Yefeng Zheng

In this paper, we propose a novel training pipeline to address the mode collapse issue of GANs.

Activation Template Matching Loss for Explainable Face Recognition

no code implementations5 Jul 2022 Huawei Lin, Haozhe Liu, Qiufu Li, Linlin Shen

Can we construct an explainable face recognition network able to learn a facial part-based feature like eyes, nose, mouth and so forth, without any manual annotation or additionalsion datasets?

Face Alignment Face Recognition +2

Robust Representation via Dynamic Feature Aggregation

1 code implementation16 May 2022 Haozhe Liu, Haoqin Ji, Yuexiang Li, Nanjun He, Haoqian Wu, Feng Liu, Linlin Shen, Yefeng Zheng

With the regularization and orthogonal classifier, a more compact embedding space can be obtained, which accordingly improves the model robustness against adversarial attacks.

Out of Distribution (OOD) Detection

Why KDAC? A general activation function for knowledge discovery

no code implementations27 Nov 2021 Zhenhua Wang, Dong Gao, Haozhe Liu, Fanglin Liu

We hope that KDAC can be exploited as a promising activation function to devote itself to the construction of knowledge.

named-entity-recognition Named Entity Recognition +1

FRT-PAD: Effective Presentation Attack Detection Driven by Face Related Task

1 code implementation22 Nov 2021 Wentian Zhang, Haozhe Liu, Feng Liu, Raghavendra Ramachandra, Christoph Busch

The proposed method, first introduces task specific features from other face related task, then, we design a Cross-Modal Adapter using a Graph Attention Network (GAT) to re-map such features to adapt to PAD task.

Attribute Face Presentation Attack Detection +2

Fingerprint Presentation Attack Detection by Channel-wise Feature Denoising

1 code implementation15 Nov 2021 Feng Liu, Zhe Kong, Haozhe Liu, Wentian Zhang, Linlin Shen

The proposed method learns important features of fingerprint images by weighing the importance of each channel and identifying discriminative channels and "noise" channels.

Denoising

Manifold-preserved GANs

no code implementations18 Sep 2021 Haozhe Liu, Hanbang Liang, Xianxu Hou, Haoqian Wu, Feng Liu, Linlin Shen

Generative Adversarial Networks (GANs) have been widely adopted in various fields.

Taming Self-Supervised Learning for Presentation Attack Detection: De-Folding and De-Mixing

1 code implementation9 Sep 2021 Zhe Kong, Wentian Zhang, Feng Liu, Wenhan Luo, Haozhe Liu, Linlin Shen, Raghavendra Ramachandra

Even though there are numerous Presentation Attack Detection (PAD) techniques based on both deep learning and hand-crafted features, the generalization of PAD for unknown PAI is still a challenging problem.

Self-Supervised Learning

Group-wise Inhibition based Feature Regularization for Robust Classification

1 code implementation ICCV 2021 Haozhe Liu, Haoqian Wu, Weicheng Xie, Feng Liu, Linlin Shen

The convolutional neural network (CNN) is vulnerable to degraded images with even very small variations (e. g. corrupted and adversarial samples).

Classification Domain Generalization +2

A Zero-Shot based Fingerprint Presentation Attack Detection System

no code implementations12 Feb 2020 Haozhe Liu, Wentian Zhang, Guojie Liu, Feng Liu

Therefore, we propose a novel Zero-Shot Presentation Attack Detection Model to guarantee the generalization of the PAD model.

Clustering

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