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This paper presents our submission to SemEval-2021 Task 5: Toxic Spans Detection. The purpose of this task is to detect the spans that make a text toxic, which is a complex labour for several reasons. Firstly, because of the intrinsic…

Computation and Language · Computer Science 2021-08-03 Rafel Palliser-Sans , Albert Rial-Farràs

Text correction, especially the semantic correction of more widely used scenes, is strongly required to improve, for the fluency and writing efficiency of the text. An adversarial multi-task learning method is proposed to enhance the…

Computation and Language · Computer Science 2023-06-29 Fanyu Wang , Zhenping Xie

Detecting hate speech and offensive language is essential for maintaining a safe and respectful digital environment. This study examines the limitations of state-of-the-art large language models (LLMs) in identifying offensive content…

Computation and Language · Computer Science 2024-06-19 Yunze Xiao , Yujia Hu , Kenny Tsu Wei Choo , Roy Ka-wei Lee

In this work, we present our approach and findings for SemEval-2021 Task 5 - Toxic Spans Detection. The task's main aim was to identify spans to which a given text's toxicity could be attributed. The task is challenging mainly due to two…

Computation and Language · Computer Science 2021-04-06 Archit Bansal , Abhay Kaushik , Ashutosh Modi

Phonetic Cloaking Replacement (PCR), defined as the deliberate use of homophonic or near-homophonic variants to hide toxic intent, has become a major obstacle to Chinese content moderation. While this problem is well-recognized, existing…

Computation and Language · Computer Science 2025-07-11 Haotan Guo , Jianfei He , Jiayuan Ma , Hongbin Na , Zimu Wang , Haiyang Zhang , Qi Chen , Wei Wang , Zijing Shi , Tao Shen , Ling Chen

Toxic content detection aims to identify content that can offend or harm its recipients. Automated classifiers of toxic content need to be robust against adversaries who deliberately try to bypass filters. We propose a method of generating…

Computation and Language · Computer Science 2019-12-17 Keita Kurita , Anna Belova , Antonios Anastasopoulos

Data contamination is a known threat to the reliability of model evaluation. However, it remains underexplored in code large language models (LLMs), where contamination often goes beyond exact duplication. We present TRACER, a…

Software Engineering · Computer Science 2026-05-26 Yifeng Di , Xuliang Huang , Tianyi Zhang

Bidirectional Encoder Representations from Transformers or BERT~\cite{devlin-etal-2019-bert} has been one of the base models for various NLP tasks due to its remarkable performance. Variants customized for different languages and tasks are…

Computation and Language · Computer Science 2022-11-22 Ting Han , Kunhao Pan , Xinyu Chen , Dingjie Song , Yuchen Fan , Xinyu Gao , Ruyi Gan , Jiaxing Zhang

Chinese pre-trained language models usually process text as a sequence of characters, while ignoring more coarse granularity, e.g., words. In this work, we propose a novel pre-training paradigm for Chinese -- Lattice-BERT, which explicitly…

Computation and Language · Computer Science 2021-05-31 Yuxuan Lai , Yijia Liu , Yansong Feng , Songfang Huang , Dongyan Zhao

In order to improve the accuracy performance of Chinese text classification models with low hardware requirements, an improved concatenation-based model is designed in this paper, which is a concatenation of 5 different sub-models,…

Computation and Language · Computer Science 2021-11-15 Qingli Man , Yuanhao Zhuo

Large language models (LLMs) are now ubiquitous in user-facing applications, yet they still generate undesirable toxic outputs, including profanity, vulgarity, and derogatory remarks. Although numerous detoxification methods exist, most…

Computation and Language · Computer Science 2025-10-24 Agam Goyal , Vedant Rathi , William Yeh , Yian Wang , Yuen Chen , Hari Sundaram

Online conversations can be toxic and subjected to threats, abuse, or harassment. To identify toxic text comments, several deep learning and machine learning models have been proposed throughout the years. However, recent studies…

Machine Learning · Computer Science 2023-11-09 Md Azim Khan

Toxicity detection is crucial for maintaining the peace of the society. While existing methods perform well on normal toxic contents or those generated by specific perturbation methods, they are vulnerable to evolving perturbation patterns.…

Cryptography and Security · Computer Science 2025-03-05 Hankun Kang , Jianhao Chen , Yongqi Li , Xin Miao , Mayi Xu , Ming Zhong , Yuanyuan Zhu , Tieyun Qian

Toxic speech detection has become a crucial challenge in maintaining safe online communication environments. However, existing approaches to toxic speech detection often neglect the contribution of paralinguistic cues, such as emotion,…

Sound · Computer Science 2026-05-18 Zhongjie Ba , Liang Yi , Peng Cheng , Qingcao Li , Qinglong Wang , Li Lu

Lexicon information and pre-trained models, such as BERT, have been combined to explore Chinese sequence labelling tasks due to their respective strengths. However, existing methods solely fuse lexicon features via a shallow and random…

Computation and Language · Computer Science 2021-12-28 Wei Liu , Xiyan Fu , Yue Zhang , Wenming Xiao

Despite the recent successes of transformer-based models in terms of effectiveness on a variety of tasks, their decisions often remain opaque to humans. Explanations are particularly important for tasks like offensive language or toxicity…

Computation and Language · Computer Science 2021-03-03 Tong Xiang , Sean MacAvaney , Eugene Yang , Nazli Goharian

Given the dynamic nature of toxic language use, automated methods for detecting toxic spans are likely to encounter distributional shift. To explore this phenomenon, we evaluate three approaches for detecting toxic spans under cross-domain…

Computation and Language · Computer Science 2023-06-19 Stefan F. Schouten , Baran Barbarestani , Wondimagegnhue Tufa , Piek Vossen , Ilia Markov

With the ever-increasing availability of digital information, toxic content is also on the rise. Therefore, the detection of this type of language is of paramount importance. We tackle this problem utilizing a combination of a…

Computation and Language · Computer Science 2021-04-12 Akbar Karimi , Leonardo Rossi , Andrea Prati

Recent NLP literature pays little attention to the robustness of toxicity language predictors, while these systems are most likely to be used in adversarial contexts. This paper presents a novel adversarial attack, \texttt{ToxicTrap},…

Computation and Language · Computer Science 2024-04-16 Dmitriy Bespalov , Sourav Bhabesh , Yi Xiang , Liutong Zhou , Yanjun Qi

The increment of toxic comments on online space is causing tremendous effects on other vulnerable users. For this reason, considerable efforts are made to deal with this, and SemEval-2021 Task 5: Toxic Spans Detection is one of those. This…

Computation and Language · Computer Science 2021-04-16 Phu Gia Hoang , Luan Thanh Nguyen , Kiet Van Nguyen