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Machine learning and deep learning in particular has advanced tremendously on perceptual tasks in recent years. However, it remains vulnerable against adversarial perturbations of the input that have been crafted specifically to fool the…

Machine Learning · Statistics 2017-02-22 Jan Hendrik Metzen , Tim Genewein , Volker Fischer , Bastian Bischoff

Adversarial attack serves as a major challenge for neural network models in NLP, which precludes the model's deployment in safety-critical applications. A recent line of work, detection-based defense, aims to distinguish adversarial…

Computation and Language · Computer Science 2023-02-07 Lingfeng Shen , Ze Zhang , Haiyun Jiang , Ying Chen

The advances in generative AI have enabled the creation of synthetic audio which is perceptually indistinguishable from real, genuine audio. Although this stellar progress enables many positive applications, it also raises risks of misuse,…

The widespread use of large language models (LLMs) is increasing the demand for methods that detect machine-generated text to prevent misuse. The goal of our study is to stress test the detectors' robustness to malicious attacks under…

Computation and Language · Computer Science 2024-02-20 Yichen Wang , Shangbin Feng , Abe Bohan Hou , Xiao Pu , Chao Shen , Xiaoming Liu , Yulia Tsvetkov , Tianxing He

Deep Neural Networks (DNNs) have become a powerful toolfor a wide range of problems. Yet recent work has found an increasing variety of adversarial samplesthat can fool them. Most existing detection mechanisms against adversarial…

Machine Learning · Computer Science 2019-11-22 Ilia Shumailov , Yiren Zhao , Robert Mullins , Ross Anderson

In recent years, abusive behavior has become a serious issue in online social networks. In this paper, we present a new corpus from a semi-anonymous social media platform, which contains the instances of offensive and neutral classes. We…

Computation and Language · Computer Science 2019-09-10 Niloofar Safi Samghabadi , Afsheen Hatami , Mahsa Shafaei , Sudipta Kar , Thamar Solorio

All existing databases of spoofed speech contain attack data that is spoofed in its entirety. In practice, it is entirely plausible that successful attacks can be mounted with utterances that are only partially spoofed. By definition,…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-16 Lin Zhang , Xin Wang , Erica Cooper , Junichi Yamagishi , Jose Patino , Nicholas Evans

Security of automatic speaker verification (ASV) systems is compromised by various spoofing attacks. While many types of non-proactive attacks (and their defenses) have been studied in the past, attacker's perspective on ASV, represents a…

Audio and Speech Processing · Electrical Eng. & Systems 2020-04-21 Rohan Kumar Das , Xiaohai Tian , Tomi Kinnunen , Haizhou Li

Adversarial purification is a defense mechanism for safeguarding classifiers against adversarial attacks without knowing the type of attacks or training of the classifier. These techniques characterize and eliminate adversarial…

Cryptography and Security · Computer Science 2024-02-13 Raha Moraffah , Shubh Khandelwal , Amrita Bhattacharjee , Huan Liu

Machine learning models are vulnerable to adversarial inputs that induce seemingly unjustifiable errors. As automated classifiers are increasingly used in industrial control systems and machinery, these adversarial errors could grow to be a…

The popularity of pretrained language models in natural language processing systems calls for a careful evaluation of such models in down-stream tasks, which have a higher potential for societal impact. The evaluation of such systems…

Computation and Language · Computer Science 2022-04-15 Ioana Baldini , Dennis Wei , Karthikeyan Natesan Ramamurthy , Mikhail Yurochkin , Moninder Singh

The detection of offensive language in the context of a dialogue has become an increasingly important application of natural language processing. The detection of trolls in public forums (Gal\'an-Garc\'ia et al., 2016), and the deployment…

Computation and Language · Computer Science 2019-08-20 Emily Dinan , Samuel Humeau , Bharath Chintagunta , Jason Weston

The spread of fake news has emerged as a critical challenge, undermining trust and posing threats to society. In the era of Large Language Models (LLMs), the capability to generate believable fake content has intensified these concerns. In…

Computation and Language · Computer Science 2023-09-19 Jinyan Su , Terry Yue Zhuo , Jonibek Mansurov , Di Wang , Preslav Nakov

Reliable automatic hate speech (HS) detection systems must adapt to the in-flow of diverse new data to curtail hate speech. However, hate speech detection systems commonly lack generalizability in identifying hate speech dissimilar to data…

Computation and Language · Computer Science 2023-12-19 Shi Yin Hong , Susan Gauch

The impact of voice disorders is becoming more widely acknowledged as a public health issue. Several machine learning-based classifiers with the potential to identify disorders have been used in recent studies to differentiate between…

Cryptography and Security · Computer Science 2024-10-23 Gianpaolo Perelli , Andrea Panzino , Roberto Casula , Marco Micheletto , Giulia Orrù , Gian Luca Marcialis

Hate speech has grown significantly on social media, causing serious consequences for victims of all demographics. Despite much attention being paid to characterize and detect discriminatory speech, most work has focused on explicit or…

Computation and Language · Computer Science 2021-09-14 Mai ElSherief , Caleb Ziems , David Muchlinski , Vaishnavi Anupindi , Jordyn Seybolt , Munmun De Choudhury , Diyi Yang

Automatic detection of speaker confidence is critical for adaptive computing but remains constrained by limited labelled data and the subjectivity of paralinguistic annotations. This paper proposes a semi-supervised hybrid framework that…

Sound · Computer Science 2026-05-13 Adam Wynn , Jingyun Wang

The existence of adversarial data examples has drawn significant attention in the deep-learning community; such data are seemingly minimally perturbed relative to the original data, but lead to very different outputs from a deep-learning…

Machine Learning · Computer Science 2019-11-12 Bai Li , Changyou Chen , Wenlin Wang , Lawrence Carin

Deep neural networks based object detection models have revolutionized computer vision and fueled the development of a wide range of visual recognition applications. However, recent studies have revealed that deep object detectors can be…

Cryptography and Security · Computer Science 2020-07-14 Ka-Ho Chow , Ling Liu , Mehmet Emre Gursoy , Stacey Truex , Wenqi Wei , Yanzhao Wu

The rapid growth of social media has amplified the spread of offensive, violent, and vulgar speech, which poses serious societal and cybersecurity concerns. Detecting such content in Arabic text is particularly complex due to limited…

Computation and Language · Computer Science 2025-06-04 Aisha Alansari , Hamzah Luqman