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Sparse autoencoders have become a standard tool for uncovering interpretable latent representations in neural networks. Yet salient concepts often span manifolds that current linear methods cannot capture without post hoc analysis. This…

机器学习 · 计算机科学 2026-05-12 Thomas Dooms , Ward Gauderis , Geraint Wiggins , Jose Oramas

The combination of highly realistic voice cloning, along with visually compelling avatar, face-swap, or lip-sync deepfake video generation, makes it relatively easy to create a video of anyone saying anything. Today, such deepfake…

计算机视觉与模式识别 · 计算机科学 2025-07-15 Justin D. Norman , Hany Farid

In recent years, deep learning methods have outperformed other methods in image recognition. This has fostered imagination of potential application of deep learning technology including safety relevant applications like the interpretation…

计算机视觉与模式识别 · 计算机科学 2019-12-10 Matthias Rottmann , Kira Maag , Robin Chan , Fabian Hüger , Peter Schlicht , Hanno Gottschalk

Sparse autoencoders (SAEs) extract millions of interpretable features from a language model, but flat feature inventories aren't very useful on their own. Domain concepts get mixed with generic and weakly grounded features, while related…

人工智能 · 计算机科学 2026-04-29 John Winnicki , Abeynaya Gnanasekaran , Eric Darve

Image manipulation is rapidly evolving, allowing the creation of credible content that can be used to bend reality. Although the results of deepfake detectors are promising, deepfakes can be made even more complicated to detect through…

计算机视觉与模式识别 · 计算机科学 2024-10-08 Davide Alessandro Coccomini , Roberto Caldelli , Fabrizio Falchi , Claudio Gennaro , Giuseppe Amato

Deepfake detection research has largely converged on deep learning approaches that, despite strong benchmark performance, offer limited insight into what distinguishes real from manipulated facial behavior. This study presents an…

计算机视觉与模式识别 · 计算机科学 2026-04-24 Timothy Joseph Murphy , Jennifer Cook , Hélio Clemente José Cuve

Mechanistic interpretability of large language models (LLMs) aims to uncover the internal processes of information propagation and reasoning. Sparse autoencoders (SAEs) have demonstrated promise in this domain by extracting interpretable…

机器学习 · 计算机科学 2025-05-26 Wei Shi , Sihang Li , Tao Liang , Mingyang Wan , Guojun Ma , Xiang Wang , Xiangnan He

The classification of forged videos has been a challenge for the past few years. Deepfake classifiers can now reliably predict whether or not video frames have been tampered with. However, their performance is tied to both the dataset used…

计算机视觉与模式识别 · 计算机科学 2024-12-31 Matthieu Delmas , Renaud Seguier

Sparse Autoencoders (SAEs) have shown promise in improving the interpretability of neural network activations, but can learn features that are not features of the input, limiting their effectiveness. We propose \textsc{Mutual Feature…

机器学习 · 计算机科学 2024-11-07 Luke Marks , Alasdair Paren , David Krueger , Fazl Barez

In this paper we propose a novel human-centered approach for detecting forgery in face images, using dynamic prototypes as a form of visual explanations. Currently, most state-of-the-art deepfake detections are based on black-box models…

计算机视觉与模式识别 · 计算机科学 2021-01-18 Loc Trinh , Michael Tsang , Sirisha Rambhatla , Yan Liu

Part-level features are crucial for image understanding, but few studies focus on them because of the lack of fine-grained labels. Although unsupervised part discovery can eliminate the reliance on labels, most of them cannot maintain…

计算机视觉与模式识别 · 计算机科学 2025-07-17 Jiahao Xia , Yike Wu , Wenjian Huang , Jianguo Zhang , Jian Zhang

We address multimodal deepfake detection requiring both robustness and interpretability by proposing FakeHunter, a unified framework that combines memory guided retrieval, a structured Observation-Thought-Action reasoning loop, and adaptive…

多媒体 · 计算机科学 2025-09-11 Chen Chen , Runze Li , Zejun Zhang , Pukun Zhao , Fanqing Zhou , Longxiang Wang , Haojian Huang

This paper presents an innovative approach to dimensionality reduction and feature extraction in high-dimensional datasets, with a specific application focus on wood surface defect detection. The proposed framework integrates sparse…

机器学习 · 计算机科学 2024-10-01 Harish Neelam , Koushik Sai Veerella , Souradip Biswas

Sparse auto-encoders (SAEs) have re-emerged as a prominent method for mechanistic interpretability, yet they face two significant challenges: the non-smoothness of the $L_1$ penalty, which hinders reconstruction and scalability, and a lack…

人工智能 · 计算机科学 2026-05-19 Ouns El Harzli , Hugo Wallner , Yoonsoo Nam , Haixuan Xavier Tao

The rise of deepfake technology brings forth new questions about the authenticity of various forms of media found online today. Videos and images generated by artificial intelligence (AI) have become increasingly more difficult to…

计算机视觉与模式识别 · 计算机科学 2025-07-28 Benjamin Carter , Nathan Dilla , Micheal Callahan , Atuhaire Ambala

Deep convolutional neural networks have shown remarkable results on multiple detection tasks. Despite the significant progress, the performance of such detectors are often assessed in public benchmarks under non-realistic conditions.…

计算机视觉与模式识别 · 计算机科学 2022-03-23 Yuhang Lu , Ruizhi Luo , Touradj Ebrahimi

This paper shows that Masking the Deep hierarchical features is an efficient self-supervised method, denoted as MaskDeep. MaskDeep treats each patch in the representation space as an independent instance. We mask part of patches in the…

计算机视觉与模式识别 · 计算机科学 2023-04-04 Fenggang Liu , Yangguang Li , Feng Liang , Jilan Xu , Bin Huang , Jing Shao

Sparse autoencoders (SAEs) are designed to extract interpretable features from language models by enforcing a sparsity constraint. Ideally, training an SAE would yield latents that are both sparse and semantically meaningful. However, many…

Deep Neural Networks (DNNs) are widely used for decision making in a myriad of critical applications, ranging from medical to societal and even judicial. Given the importance of these decisions, it is crucial for us to be able to interpret…

计算机视觉与模式识别 · 计算机科学 2022-11-28 Teddy Koker , Fatemehsadat Mireshghallah , Tom Titcombe , Georgios Kaissis

Recent advancements in text-to-speech and speech conversion technologies have enabled the creation of highly convincing synthetic speech. While these innovations offer numerous practical benefits, they also cause significant security…

声音 · 计算机科学 2024-12-18 Kuiyuan Zhang , Zhongyun Hua , Rushi Lan , Yushu Zhang , Yifang Guo