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Advances in deep learning, combined with availability of large datasets, have led to impressive improvements in face presentation attack detection research. However, state-of-the-art face antispoofing systems are still vulnerable to novel…

计算机视觉与模式识别 · 计算机科学 2021-08-30 Mohammad Rostami , Leonidas Spinoulas , Mohamed Hussein , Joe Mathai , Wael Abd-Almageed

Self-supervised features are typically used in place of filter-bank features in speaker verification models. However, these models were originally designed to ingest filter-bank features as inputs, and thus, training them on top of…

Backdoor attacks change a small portion of training data by introducing hand-crafted triggers and rewiring the corresponding labels towards a desired target class. Training on such data injects a backdoor which causes malicious inference in…

机器学习 · 计算机科学 2024-09-05 Ivan Sabolić , Ivan Grubišić , Siniša Šegvić

The ability to transfer adversarial attacks from one model (the surrogate) to another model (the victim) has been an issue of concern within the machine learning (ML) community. The ability to successfully evade unseen models represents an…

机器学习 · 计算机科学 2021-09-28 Luke E. Richards , André Nguyen , Ryan Capps , Steven Forsythe , Cynthia Matuszek , Edward Raff

We investigate the effectiveness of ensembles of pretrained transformer-based language models on short answer questions using the Kaggle Automated Short Answer Scoring dataset. We fine-tune a collection of popular small, base, and large…

计算与语言 · 计算机科学 2022-02-24 Christopher Ormerod

Current neural-network-based classifiers are susceptible to adversarial examples. The most empirically successful approach to defending against such adversarial examples is adversarial training, which incorporates a strong self-attack…

机器学习 · 计算机科学 2020-06-08 Bai Li , Shiqi Wang , Suman Jana , Lawrence Carin

We introduce a new attack paradigm that embeds hidden adversarial capabilities directly into diffusion models via fine-tuning, without altering their observable behavior or requiring modifications during inference. Unlike prior approaches…

机器学习 · 计算机科学 2025-04-15 Lucas Beerens , Desmond J. Higham

This work explores how self-supervised learning can be universally used to discover speaker-specific features towards enabling personalized speech enhancement models. We specifically address the few-shot learning scenario where access to…

音频与语音处理 · 电气工程与系统科学 2022-08-11 Aswin Sivaraman , Minje Kim

Self-supervised learning (SSL) based speech pre-training has attracted much attention for its capability of extracting rich representations learned from massive unlabeled data. On the other hand, the use of weakly-supervised data is less…

音频与语音处理 · 电气工程与系统科学 2023-06-30 Wangyou Zhang , Yanmin Qian

Advances in automatic speaker verification (ASV) promote research into the formulation of spoofing detection systems for real-world applications. The performance of ASV systems can be degraded severely by multiple types of spoofing attacks,…

声音 · 计算机科学 2024-08-27 Zhenyu Wang , John H. L. Hansen

Self-supervised learning (SSL) speech models generate meaningful representations of given clips and achieve incredible performance across various downstream tasks. Model extraction attack (MEA) often refers to an adversary stealing the…

声音 · 计算机科学 2023-10-10 Tsu-Yuan Hsu , Chen-An Li , Tung-Yu Wu , Hung-yi Lee

Transfer learning provides an effective solution for feasibly and fast customize accurate \textit{Student} models, by transferring the learned knowledge of pre-trained \textit{Teacher} models over large datasets via fine-tuning. Many…

机器学习 · 计算机科学 2020-08-11 Shuo Wang , Surya Nepal , Carsten Rudolph , Marthie Grobler , Shangyu Chen , Tianle Chen

Because state-of-the-art language models are expensive to train, most practitioners must make use of one of the few publicly available language models or language model APIs. This consolidation of trust increases the potency of backdoor…

密码学与安全 · 计算机科学 2023-07-28 Nikhil Kandpal , Matthew Jagielski , Florian Tramèr , Nicholas Carlini

State-of-the-art deep neural networks are known to be vulnerable to adversarial examples, formed by applying small but malicious perturbations to the original inputs. Moreover, the perturbations can \textit{transfer across models}:…

机器学习 · 统计学 2018-02-28 Lei Wu , Zhanxing Zhu , Cheng Tai , Weinan E

In this paper we investigate the ability of generative adversarial networks (GANs) to synthesize spoofing attacks on modern speaker recognition systems. We first show that samples generated with SampleRNN and WaveNet are unable to fool a…

声音 · 计算机科学 2018-01-09 Wilson Cai , Anish Doshi , Rafael Valle

This work presents self-supervised learning methods for developing monaural speaker-specific (i.e., personalized) speech enhancement models. While generalist models must broadly address many speakers, specialist models can adapt their…

音频与语音处理 · 电气工程与系统科学 2022-07-28 Aswin Sivaraman , Minje Kim

Self-Supervised Learning (SSL) from speech data has produced models that have achieved remarkable performance in many tasks, and that are known to implicitly represent many aspects of information latently present in speech signals. However,…

计算与语言 · 计算机科学 2022-10-27 Guan-Ting Lin , Chi-Luen Feng , Wei-Ping Huang , Yuan Tseng , Tzu-Han Lin , Chen-An Li , Hung-yi Lee , Nigel G. Ward

Training personalized speech enhancement models is innately a no-shot learning problem due to privacy constraints and limited access to noise-free speech from the target user. If there is an abundance of unlabeled noisy speech from the…

音频与语音处理 · 电气工程与系统科学 2021-04-06 Aswin Sivaraman , Sunwoo Kim , Minje Kim

Recent advances in depth-recurrent language models show that recurrence can decouple train-time compute and parameter count from test-time compute. In this work, we study how to convert existing pretrained non-recurrent language models into…

Human voices can be used to authenticate the identity of the speaker, but the automatic speaker verification (ASV) systems are vulnerable to voice spoofing attacks, such as impersonation, replay, text-to-speech, and voice conversion.…

音频与语音处理 · 电气工程与系统科学 2021-06-09 You Zhang , Fei Jiang , Zhiyao Duan