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In this work, we propose a novel method to improve the generalization ability of CNN-based face forgery detectors. Our method considers the feature anomalies of forged faces caused by the prevalent blending operations in face forgery…

Computer Vision and Pattern Recognition · Computer Science 2022-10-03 Jianwei Fei , Yunshu Dai , Peipeng Yu , Tianrun Shen , Zhihua Xia , Jian Weng

Point-level weakly-supervised temporal action localization (PWTAL) aims to localize actions with only a single timestamp annotation for each action instance. Existing methods tend to mine dense pseudo labels to alleviate the label sparsity,…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Yueyang Li , Yonghong Hou , Wanqing Li

This paper proposes a novel framework for audio deepfake detection with two main objectives: i) attaining the highest possible accuracy on available fake data, and ii) effectively performing continuous learning on new fake data in a…

Sound · Computer Science 2024-09-11 Tuan Duy Nguyen Le , Kah Kuan Teh , Huy Dat Tran

Rapid LLM advancements heighten fake news risks by enabling the automatic generation of increasingly sophisticated misinformation. Previous detection methods, including fine-tuned small models or LLM-based detectors, often struggle with its…

Computation and Language · Computer Science 2025-08-28 Chong Tian , Qirong Ho , Xiuying Chen

The proliferation of fake news across diverse domains highlights critical limitations in current detection systems, which often exhibit narrow domain specificity and poor generalization. Existing cross-domain approaches face two key…

Artificial Intelligence · Computer Science 2026-04-07 Esma Aïmeur , Gilles Brassard , Dorsaf Sallami

Learning from noisy labels (LNL) is a challenge that arises in many real-world scenarios where collected training data can contain incorrect or corrupted labels. Most existing solutions identify noisy labels and adopt active learning to…

Machine Learning · Computer Science 2025-04-07 Bo Yuan , Yulin Chen , Yin Zhang , Wei Jiang

Traditional defenses against Deep Leakage (DL) attacks in Federated Learning (FL) primarily focus on obfuscation, introducing noise, transformations or encryption to degrade an attacker's ability to reconstruct private data. While effective…

Cryptography and Security · Computer Science 2026-01-22 Isaac Baglin , Xiatian Zhu , Simon Hadfield

The challenge in sourcing attribution for forgery faces has gained widespread attention due to the rapid development of generative techniques. While many recent works have taken essential steps on GAN-generated faces, more threatening…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Zhimin Sun , Shen Chen , Taiping Yao , Bangjie Yin , Ran Yi , Shouhong Ding , Lizhuang Ma

Forgery operations on video contents are nowadays within the reach of anyone, thanks to the availability of powerful and user-friendly editing software. Integrity verification and authentication of videos represent a major interest in both…

Computer Vision and Pattern Recognition · Computer Science 2021-06-04 Sebastiano Verde , Paolo Bestagini , Simone Milani , Giancarlo Calvagno , Stefano Tubaro

We propose Fast Language-Audio Pre-training (FLAP), a self-supervised approach that efficiently and effectively learns aligned audio and language representations through masking, contrastive learning and reconstruction. For efficiency, FLAP…

Sound · Computer Science 2023-11-06 Ching-Feng Yeh , Po-Yao Huang , Vasu Sharma , Shang-Wen Li , Gargi Gosh

Advances in Generative AI have made video-level deepfake detection increasingly challenging, exposing the limitations of current detection techniques. In this paper, we present HOLA, our solution to the Video-Level Deepfake Detection track…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Xuecheng Wu , Danlei Huang , Heli Sun , Xinyi Yin , Yifan Wang , Hao Wang , Jia Zhang , Fei Wang , Peihao Guo , Suyu Xing , Junxiao Xue , Liang He

Advances in speech synthesis technologies, like text-to-speech (TTS) and voice conversion (VC), have made detecting deepfake speech increasingly challenging. Spoofing countermeasures often struggle to generalize effectively, particularly…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-27 Wen Huang , Yanmei Gu , Zhiming Wang , Huijia Zhu , Yanmin Qian

Alleviating noisy pseudo labels remains a key challenge in Semi-Supervised Temporal Action Localization (SS-TAL). Existing methods often filter pseudo labels based on strict conditions, but they typically assess classification and…

Computer Vision and Pattern Recognition · Computer Science 2024-07-26 Feixiang Zhou , Bryan Williams , Hossein Rahmani

Due to the successful application of deep learning, audio spoofing detection has made significant progress. Spoofed audio with speech synthesis or voice conversion can be well detected by many countermeasures. However, an automatic speaker…

Sound · Computer Science 2024-01-12 Lian Huang , Chi-Man Pun

Copy-move forgery on speech (CMF), coupled with post-processing techniques, presents a great challenge to the forensic detection and localization of tampered areas. Most of the existing CMF detection approaches necessitate pre-segmentation…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-11 Dong Yang , Mingle Liu , Muyong Cao

Most deepfake detection methods focus on detecting spatial and/or spatio-temporal changes in facial attributes and are centered around the binary classification task of detecting whether a video is real or fake. This is because available…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Zhixi Cai , Shreya Ghosh , Abhinav Dhall , Tom Gedeon , Kalin Stefanov , Munawar Hayat

Recent semi-supervised learning (SSL) methods typically include a filtering strategy to improve the quality of pseudo labels. However, these filtering strategies are usually hand-crafted and do not change as the model is updated, resulting…

Machine Learning · Computer Science 2023-09-19 Lei Zhu , Zhanghan Ke , Rynson Lau

Existing methods on audio-visual deepfake detection mainly focus on high-level features for modeling inconsistencies between audio and visual data. As a result, these approaches usually overlook finer audio-visual artifacts, which are…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Marcella Astrid , Enjie Ghorbel , Djamila Aouada

Retrieval-Augmented Generation (RAG) systems require Large Language Models (LLMs) to generate responses that are faithful to the retrieved context. However, faithfulness hallucination remains a critical challenge, as existing methods often…

Computation and Language · Computer Science 2025-10-07 Xiaqiang Tang , Yi Wang , Keyu Hu , Rui Xu , Chuang Li , Weigao Sun , Jian Li , Sihong Xie

In medical image analysis, semi-supervised learning is an effective method to extract knowledge from a small amount of labeled data and a large amount of unlabeled data. This paper focuses on a popular pipeline known as self learning, and…

Computer Vision and Pattern Recognition · Computer Science 2020-08-10 Xinyue Huo , Lingxi Xie , Jianzhong He , Zijie Yang , Qi Tian