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Although deep neural networks have achieved state-of-the-art performance in various machine learning tasks, adversarial examples, constructed by adding small non-random perturbations to correctly classified inputs, successfully fool highly…

计算与语言 · 计算机科学 2022-05-02 Na Liu , Mark Dras , Wei Emma Zhang

Deep learning approaches are superior in NLP due to their ability to extract informative features and patterns from languages. The two most successful neural architectures are LSTM and transformers, used in large pretrained language models…

计算与语言 · 计算机科学 2022-03-03 Matej Klemen , Luka Krsnik , Marko Robnik-Šikonja

Recent works have illustrated that modern NLP models trained for diverse tasks ranging from sentiment analysis to language generation succumb to universal adversarial attacks, a class of input-agnostic attacks where a common trigger…

计算与语言 · 计算机科学 2026-05-19 Benedict Florance Arockiaraj , Alexander Feng , Jianxiong Cai , Xiaoyu Cheng

In this paper, we introduce an enhanced textual adversarial attack method, known as Saliency Attention and Semantic Similarity driven adversarial Perturbation (SASSP). The proposed scheme is designed to improve the effectiveness of…

密码学与安全 · 计算机科学 2025-05-22 Hetvi Waghela , Jaydip Sen , Sneha Rakshit

Recent advancements in NLP have spurred significant interest in analyzing social media text data for identifying linguistic features indicative of mental health issues. However, the domain of Expressive Narrative Stories (ENS)-deeply…

计算与语言 · 计算机科学 2025-01-28 Jinwen Tang , Qiming Guo , Yunxin Zhao , Yi Shang

Recent years have seen the wide application of NLP models in crucial areas such as finance, medical treatment, and news media, raising concerns of the model robustness and vulnerabilities. In this paper, we propose a novel prompt-based…

计算与语言 · 计算机科学 2022-03-22 Yuting Yang , Pei Huang , Juan Cao , Jintao Li , Yun Lin , Jin Song Dong , Feifei Ma , Jian Zhang

In this paper, a BERT based neural network model is applied to the JIGSAW data set in order to create a model identifying hateful and toxic comments (strictly seperated from offensive language) in online social platforms (English language),…

计算与语言 · 计算机科学 2021-10-12 Aygul Zagidullina , Georgios Patoulidis , Jonas Bokstaller

In text classification, creating an adversarial example means subtly perturbing a few words in a sentence without changing its meaning, causing it to be misclassified by a classifier. A concerning observation is that a significant portion…

计算与语言 · 计算机科学 2025-07-15 Lei Xu , Sarah Alnegheimish , Laure Berti-Equille , Alfredo Cuesta-Infante , Kalyan Veeramachaneni

Deep learning is becoming increasingly popular in real-life applications, especially in natural language processing (NLP). Users often choose training outsourcing or adopt third-party data and models due to data and computation resources…

计算与语言 · 计算机科学 2022-11-23 Xuan Sheng , Zhaoyang Han , Piji Li , Xiangmao Chang

The volume of machine-generated content online has grown dramatically due to the widespread use of Large Language Models (LLMs), leading to new challenges for content moderation systems. Conventional content moderation classifiers, which…

计算与语言 · 计算机科学 2026-05-26 Shaz Furniturewala , Arkaitz Zubiaga

Deep neural networks are vulnerable to adversarial attacks, where a small perturbation to an input alters the model prediction. In many cases, malicious inputs intentionally crafted for one model can fool another model. In this paper, we…

机器学习 · 计算机科学 2021-09-23 Liping Yuan , Xiaoqing Zheng , Yi Zhou , Cho-Jui Hsieh , Kai-wei Chang

In the field of car evaluation, more and more netizens choose to express their opinions on the Internet platform, and these comments will affect the decision-making of buyers and the trend of car word-of-mouth. As an important branch of…

计算与语言 · 计算机科学 2022-06-07 Xingchen Liu , Yawen Li , Yingxia Shao , Ang Li , Jian Liang

We now have a rich and growing set of modeling tools and algorithms for inducing linguistic structure from text that is less than fully annotated. In this paper, we discuss some of the weaknesses of our current methodology. We present a new…

计算与语言 · 计算机科学 2012-07-17 Noah A. Smith

Transformer-based language models have taken many fields in NLP by storm. BERT and its derivatives dominate most of the existing evaluation benchmarks, including those for Word Sense Disambiguation (WSD), thanks to their ability in…

计算与语言 · 计算机科学 2021-03-19 Daniel Loureiro , Kiamehr Rezaee , Mohammad Taher Pilehvar , Jose Camacho-Collados

Adversarial example generation methods in NLP rely on models like language models or sentence encoders to determine if potential adversarial examples are valid. In these methods, a valid adversarial example fools the model being attacked,…

计算与语言 · 计算机科学 2020-10-07 John X. Morris

Recent studies have revealed a security threat to natural language processing (NLP) models, called the Backdoor Attack. Victim models can maintain competitive performance on clean samples while behaving abnormally on samples with a specific…

计算与语言 · 计算机科学 2021-03-30 Wenkai Yang , Lei Li , Zhiyuan Zhang , Xuancheng Ren , Xu Sun , Bin He

Despite significant improvements in natural language understanding models with the advent of models like BERT and XLNet, these neural-network based classifiers are vulnerable to blackbox adversarial attacks, where the attacker is only…

机器学习 · 计算机科学 2021-06-17 Jatin Chauhan , Karan Bhukar , Manohar Kaul

In the day and age of social media, users have become prone to online hate speech. Several attempts have been made to classify hate speech using machine learning but the state-of-the-art models are not robust enough for practical…

计算与语言 · 计算机科学 2021-08-03 Tashvik Dhamija , Anjum , Rahul Katarya

The collection and availability of big data, combined with advances in pre-trained models (e.g., BERT, XLNET, etc), have revolutionized the predictive performance of modern natural language processing tasks, ranging from text classification…

密码学与安全 · 计算机科学 2021-12-28 Chen Chen , Xuanli He , Lingjuan Lyu , Fangzhao Wu

We study the behavior of several black-box search algorithms used for generating adversarial examples for natural language processing (NLP) tasks. We perform a fine-grained analysis of three elements relevant to search: search algorithm,…

计算与语言 · 计算机科学 2020-10-14 Jin Yong Yoo , John X. Morris , Eli Lifland , Yanjun Qi