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Discriminative pre-trained language models (PLMs) learn to predict original texts from intentionally corrupted ones. Taking the former text as positive and the latter as negative samples, the PLM can be trained effectively for…

计算与语言 · 计算机科学 2022-12-02 Zhuosheng Zhang , Hai Zhao , Masao Utiyama , Eiichiro Sumita

Large language models (LLMs) are vulnerable when trained on datasets containing harmful content, which leads to potential jailbreaking attacks in two scenarios: the integration of harmful texts within crowdsourced data used for pre-training…

密码学与安全 · 计算机科学 2024-06-03 Xiaoqun Liu , Jiacheng Liang , Muchao Ye , Zhaohan Xi

Large Language Models (LLMs) are widely used to evaluate natural language generation tasks as automated metrics. However, the likelihood, a measure of LLM's plausibility for a sentence, can vary due to superficial differences in sentences,…

计算与语言 · 计算机科学 2025-11-11 Masanari Oi , Masahiro Kaneko , Ryuto Koike , Mengsay Loem , Naoaki Okazaki

Training AI models in cybersecurity with help of vast datasets offers significant opportunities to mimic real-world behaviors effectively. However, challenges like data drift and scarcity of labelled data lead to frequent updates of models…

机器学习 · 计算机科学 2026-02-04 Saurabh Anand , Shubham Malaviya , Manish Shukla , Sachin Lodha

Some consider large-scale language models that can generate long and coherent pieces of text as dangerous, since they may be used in misinformation campaigns. Here we formulate large-scale language model output detection as a hypothesis…

计算与语言 · 计算机科学 2020-02-11 Lav R. Varshney , Nitish Shirish Keskar , Richard Socher

This paper introduces RiskCards, a framework for structured assessment and documentation of risks associated with an application of language models. As with all language, text generated by language models can be harmful, or used to bring…

The social biases and unwelcome stereotypes revealed by pretrained language models are becoming obstacles to their application. Compared to numerous debiasing methods targeting word level, there has been relatively less attention on biases…

计算与语言 · 计算机科学 2024-01-26 Bingkang Shi , Xiaodan Zhang , Dehan Kong , Yulei Wu , Zongzhen Liu , Honglei Lyu , Longtao Huang

Recent advancements in natural language generation has raised serious concerns. High-performance language models are widely used for language generation tasks because they are able to produce fluent and meaningful sentences. These models…

计算与语言 · 计算机科学 2020-10-06 Saurabh Gupta , Huy H. Nguyen , Junichi Yamagishi , Isao Echizen

Language models, while capable of generating remarkably coherent and seemingly accurate text, can occasionally produce undesirable content, including harmful or toxic outputs. In this paper, we present a new two-stage approach to detect and…

机器学习 · 计算机科学 2025-11-11 Bao Nguyen , Binh Nguyen , Duy Nguyen , Viet Anh Nguyen

While Large Language Models (LLMs) have shown significant advancements in performance, various jailbreak attacks have posed growing safety and ethical risks. Malicious users often exploit adversarial context to deceive LLMs, prompting them…

密码学与安全 · 计算机科学 2025-08-15 Jinhwa Kim , Ian G. Harris

Pre-trained language models have achieved great success in various large-scale information retrieval tasks. However, most of pretraining tasks are based on counterfeit retrieval data where the query produced by the tailored rule is assumed…

信息检索 · 计算机科学 2023-02-28 Xiangsheng Li , Xiaoshu Chen , Kunliang Wei , Bin Hu , Lei Jiang , Zeqian Huang , Zhanhui Kang

The ability to acquire latent semantics is one of the key properties that determines the performance of language models. One convenient approach to invoke this ability is to prepend metadata (e.g. URLs, domains, and styles) at the beginning…

Large language models (LLMs) sometimes exhibit dangerous unintended behaviors. Finding and fixing these is challenging because the attack surface is massive -- it is not tractable to exhaustively search for all possible inputs that may…

机器学习 · 计算机科学 2024-07-10 Adriano Hernandez

Rapid advancements of large language models (LLMs) have enabled the processing, understanding, and generation of human-like text, with increasing integration into systems that touch our social sphere. Despite this success, these models can…

Recent advances in large language models (LLMs) have demonstrated strong performance on simple text classification tasks, frequently under zero-shot settings. However, their efficacy declines when tackling complex social media challenges…

计算与语言 · 计算机科学 2025-04-23 Elyas Meguellati , Assaad Zeghina , Shazia Sadiq , Gianluca Demartini

Large language models are increasingly used as computational tools for modeling human-like behavior. We introduce a behavioral induction framework that modifies model policies through fine-tuning on structured decision-making tasks: using…

计算与语言 · 计算机科学 2026-05-22 Nicola Milano , Davide Marocco

A major factor in the recent success of large language models is the use of enormous and ever-growing text datasets for unsupervised pre-training. However, naively training a model on all available data may not be optimal (or feasible), as…

Large pre-trained language models are often trained on large volumes of internet data, some of which may contain toxic or abusive language. Consequently, language models encode toxic information, which makes the real-world usage of these…

计算与语言 · 计算机科学 2021-12-16 Andrew Wang , Mohit Sudhakar , Yangfeng Ji

Deep generative models are known to produce undesirable samples such as harmful content. Traditional mitigation methods include re-training from scratch, filtering, or editing; however, these are either computationally expensive or can be…

机器学习 · 计算机科学 2024-02-22 Zhifeng Kong , Kamalika Chaudhuri

Language model fine-tuning is essential for modern natural language processing, but is computationally expensive and time-consuming. Further, the effectiveness of fine-tuning is limited by the inclusion of training examples that negatively…

计算与语言 · 计算机科学 2022-05-23 Richard Antonello , Nicole Beckage , Javier Turek , Alexander Huth