Search Results for author: Haoliang Li

Found 48 papers, 20 papers with code

MoE-FFD: Mixture of Experts for Generalized and Parameter-Efficient Face Forgery Detection

no code implementations12 Apr 2024 Chenqi Kong, Anwei Luo, Song Xia, Yi Yu, Haoliang Li, Alex C. Kot

Moreover, MoE-FFD leverages the expressivity of transformers and local priors of CNNs to simultaneously extract global and local forgery clues.

Log Neural Controlled Differential Equations: The Lie Brackets Make a Difference

no code implementations28 Feb 2024 Benjamin Walker, Andrew D. McLeod, Tiexin Qin, Yichuan Cheng, Haoliang Li, Terry Lyons

The core component of Log-NCDEs is the Log-ODE method, a tool from the study of rough paths for approximating a CDE's solution.

Time Series Time Series Classification

TELLER: A Trustworthy Framework for Explainable, Generalizable and Controllable Fake News Detection

1 code implementation12 Feb 2024 Hui Liu, Wenya Wang, Haoru Li, Haoliang Li

The proliferation of fake news has emerged as a severe societal problem, raising significant interest from industry and academia.

Decision Making Fake News Detection

Domain Generalization with Small Data

no code implementations9 Feb 2024 Kecheng Chen, Elena Gal, Hong Yan, Haoliang Li

In this work, we propose to tackle the problem of domain generalization in the context of \textit{insufficient samples}.

Domain Generalization

Target-agnostic Source-free Domain Adaptation for Regression Tasks

no code implementations1 Dec 2023 Tianlang He, Zhiqiu Xia, Jierun Chen, Haoliang Li, S. -H. Gary Chan

Unsupervised domain adaptation (UDA) seeks to bridge the domain gap between the target and source using unlabeled target data.

regression Source-Free Domain Adaptation +1

Robust Domain Misinformation Detection via Multi-modal Feature Alignment

1 code implementation24 Nov 2023 Hui Liu, Wenya Wang, Hao Sun, Anderson Rocha, Haoliang Li

We also propose a framework that simultaneously considers application scenarios of domain generalization (in which the target domain data is unavailable) and domain adaptation (in which unlabeled target domain data is available).

Domain Generalization Misinformation

Rethinking Sensors Modeling: Hierarchical Information Enhanced Traffic Forecasting

1 code implementation20 Sep 2023 Qian Ma, Zijian Zhang, Xiangyu Zhao, Haoliang Li, Hongwei Zhao, Yiqi Wang, Zitao Liu, Wanyu Wang

Then, we generate representative and common spatio-temporal patterns as global nodes to reflect a global dependency between sensors and provide auxiliary information for spatio-temporal dependency learning.

NPVForensics: Jointing Non-critical Phonemes and Visemes for Deepfake Detection

no code implementations12 Jun 2023 Yu Chen, Yang Yu, Rongrong Ni, Yao Zhao, Haoliang Li

Next, we design a phoneme-viseme awareness module for cross-modal feature fusion and representation alignment, so that the modality gap can be reduced and the intrinsic complementarity of the two modalities can be better explored.

DeepFake Detection Face Swapping

The Age of Synthetic Realities: Challenges and Opportunities

no code implementations9 Jun 2023 João Phillipe Cardenuto, Jing Yang, Rafael Padilha, Renjie Wan, Daniel Moreira, Haoliang Li, Shiqi Wang, Fernanda Andaló, Sébastien Marcel, Anderson Rocha

Synthetic realities are digital creations or augmentations that are contextually generated through the use of Artificial Intelligence (AI) methods, leveraging extensive amounts of data to construct new narratives or realities, regardless of the intent to deceive.

Misinformation

Neuron Activation Coverage: Rethinking Out-of-distribution Detection and Generalization

1 code implementation5 Jun 2023 Yibing Liu, Chris Xing Tian, Haoliang Li, Lei Ma, Shiqi Wang

The out-of-distribution (OOD) problem generally arises when neural networks encounter data that significantly deviates from the training data distribution, i. e., in-distribution (InD).

Out-of-Distribution Detection

Interpretable Multimodal Misinformation Detection with Logic Reasoning

2 code implementations10 May 2023 Hui Liu, Wenya Wang, Haoliang Li

Multimodal misinformation on online social platforms is becoming a critical concern due to increasing credibility and easier dissemination brought by multimedia content, compared to traditional text-only information.

Misinformation

Rehearsal-Free Domain Continual Face Anti-Spoofing: Generalize More and Forget Less

no code implementations ICCV 2023 Rizhao Cai, Yawen Cui, Zhi Li, Zitong Yu, Haoliang Li, Yongjian Hu, Alex Kot

To alleviate the forgetting of previous domains without using previous data, we propose the Proxy Prototype Contrastive Regularization (PPCR) to constrain the continual learning with previous domain knowledge from the proxy prototypes.

Continual Learning Domain Generalization +1

Enhancing General Face Forgery Detection via Vision Transformer with Low-Rank Adaptation

no code implementations2 Mar 2023 Chenqi Kong, Haoliang Li, Shiqi Wang

Nowadays, forgery faces pose pressing security concerns over fake news, fraud, impersonation, etc.

Face Detection

Temporal Coherent Test-Time Optimization for Robust Video Classification

no code implementations28 Feb 2023 Chenyu Yi, Siyuan Yang, YuFei Wang, Haoliang Li, Yap-Peng Tan, Alex C. Kot

To exploit information in video with self-supervised learning, TeCo uses global content from video clips and optimizes models for entropy minimization.

Classification Self-Supervised Learning +1

Robust Cross-domain CT Image Reconstruction via Bayesian Noise Uncertainty Alignment

no code implementations26 Feb 2023 Kecheng Chen, Haoliang Li, Renjie Wan, Hong Yan

Under this probabilistic framework, we propose to alleviate the noise distribution shifts between source and target domains via implicit noise modeling schemes in the latent space and image space, respectively.

Computed Tomography (CT) Image Reconstruction

Learning Dynamic Graph Embeddings with Neural Controlled Differential Equations

no code implementations22 Feb 2023 Tiexin Qin, Benjamin Walker, Terry Lyons, Hong Yan, Haoliang Li

Empirical evaluation on a range of dynamic graph representation learning tasks demonstrates the superiority of our proposed approach compared to the baselines.

Graph Representation Learning

M3FAS: An Accurate and Robust MultiModal Mobile Face Anti-Spoofing System

1 code implementation30 Jan 2023 Chenqi Kong, Kexin Zheng, Yibing Liu, Shiqi Wang, Anderson Rocha, Haoliang Li

Face presentation attacks (FPA), also known as face spoofing, have brought increasing concerns to the public through various malicious applications, such as financial fraud and privacy leakage.

Face Anti-Spoofing Face Recognition

Two-branch Multi-scale Deep Neural Network for Generalized Document Recapture Attack Detection

1 code implementation30 Nov 2022 Jiaxing Li, Chenqi Kong, Shiqi Wang, Haoliang Li

The image recapture attack is an effective image manipulation method to erase certain forensic traces, and when targeting on personal document images, it poses a great threat to the security of e-commerce and other web applications.

Image Manipulation

Generalization Beyond Feature Alignment: Concept Activation-Guided Contrastive Learning

no code implementations13 Nov 2022 Yibing Liu, Chris Xing Tian, Haoliang Li, Shiqi Wang

Specifically, by treating feature elements as neuron activation states, we show that conventional alignment methods tend to deteriorate the diversity of learned invariant features, as they indiscriminately minimize all neuron activation differences.

Contrastive Learning Domain Generalization

Toward domain generalized pruning by scoring out-of-distribution importance

no code implementations25 Oct 2022 Rizhao Cai, Haoliang Li, Alex Kot

Filter pruning has been widely used for compressing convolutional neural networks to reduce computation costs during the deployment stage.

Domain Generalization

Towards Multi-Modal Sarcasm Detection via Hierarchical Congruity Modeling with Knowledge Enhancement

1 code implementation7 Oct 2022 Hui Liu, Wenya Wang, Haoliang Li

In this paper, we propose a novel hierarchical framework for sarcasm detection by exploring both the atomic-level congruity based on multi-head cross attention mechanism and the composition-level congruity based on graph neural networks, where a post with low congruity can be identified as sarcasm.

Image Captioning Sarcasm Detection

Digital and Physical Face Attacks: Reviewing and One Step Further

no code implementations29 Sep 2022 Chenqi Kong, Shiqi Wang, Haoliang Li

With the rapid progress over the past five years, face authentication has become the most pervasive biometric recognition method.

Face Recognition

Domain-invariant Feature Exploration for Domain Generalization

1 code implementation25 Jul 2022 Wang Lu, Jindong Wang, Haoliang Li, Yiqiang Chen, Xing Xie

Internal invariance means that the features can be learned with a single domain and the features capture intrinsic semantics of data, i. e., the property within a domain, which is agnostic to other domains.

Domain Generalization Knowledge Distillation +2

Generalizing to Evolving Domains with Latent Structure-Aware Sequential Autoencoder

1 code implementation16 May 2022 Tiexin Qin, Shiqi Wang, Haoliang Li

Domain generalization aims to improve the generalization capability of machine learning systems to out-of-distribution (OOD) data.

Evolving Domain Generalization

One-Class Knowledge Distillation for Face Presentation Attack Detection

1 code implementation8 May 2022 Zhi Li, Rizhao Cai, Haoliang Li, Kwok-Yan Lam, Yongjian Hu, Alex C. Kot

Under this framework, a teacher network is trained with source domain samples to provide discriminative feature representations for face PAD.

Face Presentation Attack Detection

Asymmetric Modality Translation For Face Presentation Attack Detection

no code implementations18 Oct 2021 Zhi Li, Haoliang Li, Xin Luo, Yongjian Hu, Kwok-Yan Lam, Alex C. Kot

In this paper, we propose a novel framework based on asymmetric modality translation for face presentation attack detection in bi-modality scenarios.

Face Presentation Attack Detection Face Recognition +1

Learning Meta Pattern for Face Anti-Spoofing

1 code implementation13 Oct 2021 Rizhao Cai, Zhi Li, Renjie Wan, Haoliang Li, Yongjian Hu, Alex ChiChung Kot

To improve the generalization ability, recent hybrid methods have been explored to extract task-aware handcrafted features (e. g., Local Binary Pattern) as discriminative information for the input of DNNs.

Domain Generalization Face Anti-Spoofing +1

Benchmarking the Robustness of Spatial-Temporal Models Against Corruptions

1 code implementation13 Oct 2021 Chenyu Yi, Siyuan Yang, Haoliang Li, Yap-Peng Tan, Alex Kot

The state-of-the-art deep neural networks are vulnerable to common corruptions (e. g., input data degradations, distortions, and disturbances caused by weather changes, system error, and processing).

Benchmarking Computational Efficiency +1

Disentangled Feature Representation for Few-shot Image Classification

1 code implementation26 Sep 2021 Hao Cheng, YuFei Wang, Haoliang Li, Alex C. Kot, Bihan Wen

In this work, we propose a novel Disentangled Feature Representation framework, dubbed DFR, for few-shot learning applications.

Benchmarking Classification +3

Low-Light Image Enhancement with Normalizing Flow

1 code implementation13 Sep 2021 YuFei Wang, Renjie Wan, Wenhan Yang, Haoliang Li, Lap-Pui Chau, Alex C. Kot

To enhance low-light images to normally-exposed ones is highly ill-posed, namely that the mapping relationship between them is one-to-many.

Low-Light Image Enhancement

Variational Disentanglement for Domain Generalization

1 code implementation13 Sep 2021 YuFei Wang, Haoliang Li, Hao Cheng, Bihan Wen, Lap-Pui Chau, Alex C. Kot

Domain generalization aims to learn an invariant model that can generalize well to the unseen target domain.

Disentanglement Domain Generalization +1

Detect and Locate: Exposing Face Manipulation by Semantic- and Noise-level Telltales

1 code implementation13 Jul 2021 Chenqi Kong, Baoliang Chen, Haoliang Li, Shiqi Wang, Anderson Rocha, Sam Kwong

The technological advancements of deep learning have enabled sophisticated face manipulation schemes, raising severe trust issues and security concerns in modern society.

Decision Making

Embracing the Dark Knowledge: Domain Generalization Using Regularized Knowledge Distillation

no code implementations6 Jul 2021 YuFei Wang, Haoliang Li, Lap-Pui Chau, Alex C. Kot

Though convolutional neural networks are widely used in different tasks, lack of generalization capability in the absence of sufficient and representative data is one of the challenges that hinder their practical application.

Domain Generalization Image Classification +1

Cross-Lingual Transfer Learning for Statistical Type Inference

no code implementations1 Jul 2021 Zhiming Li, Xiaofei Xie, Haoliang Li, Zhengzi Xu, Yi Li, Yang Liu

Hitherto statistical type inference systems rely thoroughly on supervised learning approaches, which require laborious manual effort to collect and label large amounts of data.

Code Summarization Cross-Lingual Transfer +4

Privacy-Preserving Constrained Domain Generalization via Gradient Alignment

no code implementations14 May 2021 Chris Xing Tian, Haoliang Li, YuFei Wang, Shiqi Wang

However, due to the issue of limited dataset availability and the strict legal and ethical requirements for patient privacy protection, the broad applications of medical imaging classification driven by DNN with large-scale training data have been largely hindered.

Domain Generalization Federated Learning +3

Neuron Coverage-Guided Domain Generalization

no code implementations27 Feb 2021 Chris Xing Tian, Haoliang Li, Xiaofei Xie, Yang Liu, Shiqi Wang

More specifically, by treating the DNN as a program and each neuron as a functional point of the code, during the network training we aim to improve the generalization capability by maximizing the neuron coverage of DNN with the gradient similarity regularization between the original and augmented samples.

DNN Testing Domain Generalization

Camera Invariant Feature Learning for Generalized Face Anti-spoofing

no code implementations25 Jan 2021 Baoliang Chen, Wenhan Yang, Haoliang Li, Shiqi Wang, Sam Kwong

The first branch aims to learn the camera invariant spoofing features via feature level decomposition in the high frequency domain.

Face Anti-Spoofing

DRL-FAS: A Novel Framework Based on Deep Reinforcement Learning for Face Anti-Spoofing

no code implementations16 Sep 2020 Rizhao Cai, Haoliang Li, Shiqi Wang, Changsheng chen, Alex ChiChung Kot

Inspired by the philosophy employed by human beings to determine whether a presented face example is genuine or not, i. e., to glance at the example globally first and then carefully observe the local regions to gain more discriminative information, for the face anti-spoofing problem, we propose a novel framework based on the Convolutional Neural Network (CNN) and the Recurrent Neural Network (RNN).

Face Anti-Spoofing Philosophy +1

Light Can Hack Your Face! Black-box Backdoor Attack on Face Recognition Systems

no code implementations15 Sep 2020 Haoliang Li, Yufei Wang, Xiaofei Xie, Yang Liu, Shiqi Wang, Renjie Wan, Lap-Pui Chau, Alex C. Kot

In this paper, we propose a novel black-box backdoor attack technique on face recognition systems, which can be conducted without the knowledge of the targeted DNN model.

Backdoor Attack Face Recognition

Heterogeneous Domain Generalization via Domain Mixup

no code implementations11 Sep 2020 Yufei Wang, Haoliang Li, Alex C. Kot

One of the main drawbacks of deep Convolutional Neural Networks (DCNN) is that they lack generalization capability.

Domain Generalization

No-reference Screen Content Image Quality Assessment with Unsupervised Domain Adaptation

no code implementations19 Aug 2020 Baoliang Chen, Haoliang Li, Hongfei Fan, Shiqi Wang

Here, we develop the first unsupervised domain adaptation based no reference quality assessment method for SCIs, leveraging rich subjective ratings of the natural images (NIs).

Image Quality Assessment Learning-To-Rank +2

Face Image Reflection Removal

no code implementations3 Mar 2019 Renjie Wan, Boxin Shi, Haoliang Li, Ling-Yu Duan, Alex C. Kot

Face images captured through the glass are usually contaminated by reflections.

Face Recognition Reflection Removal

Multi-task Mid-level Feature Alignment Network for Unsupervised Cross-Dataset Person Re-Identification

no code implementations4 Jul 2018 Shan Lin, Haoliang Li, Chang-Tsun Li, Alex ChiChung Kot

Most existing person re-identification (Re-ID) approaches follow a supervised learning framework, in which a large number of labelled matching pairs are required for training.

Attribute Person Re-Identification

Domain Generalization With Adversarial Feature Learning

no code implementations CVPR 2018 Haoliang Li, Sinno Jialin Pan, Shiqi Wang, Alex C. Kot

In this paper, we tackle the problem of domain generalization: how to learn a generalized feature representation for an “unseen” target domain by taking the advantage of multiple seen source-domain data.

Domain Generalization

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