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This study addresses the problem of unsupervised subword unit discovery from untranscribed speech. It forms the basis of the ultimate goal of ZeroSpeech 2019, building text-to-speech systems without text labels. In this work, unit discovery…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-29 Siyuan Feng , Tan Lee , Zhiyuan Peng

Post-training alignment of diffusion models relies on simplified signals, such as scalar rewards or binary preferences. This limits alignment with complex human expertise, which is hierarchical and fine-grained. To address this, we first…

Computer Vision and Pattern Recognition · Computer Science 2026-01-09 Chenye Meng , Zejian Li , Zhongni Liu , Yize Li , Changle Xie , Kaixin Jia , Ling Yang , Huanghuang Deng , Shiying Ding , Shengyuan Zhang , Jiayi Li , Lingyun Sun

Despite regulations imposed by nations and social media platforms, e.g. (Government of India, 2021; European Parliament and Council of the European Union, 2022), inter alia, hateful content persists as a significant challenge. Existing…

Automatic speech recognition (ASR) has benefited from advances in pretrained speech and language models, yet most systems remain constrained to monolingual settings and short, isolated utterances. While recent efforts in context-aware ASR…

Computation and Language · Computer Science 2026-03-09 Yuchen Zhang , Haralambos Mouratidis , Ravi Shekhar

In recent years, social media platforms have hosted an explosion of hate speech and objectionable content. The urgent need for effective automatic hate speech detection models have drawn remarkable investment from companies and researchers.…

Computation and Language · Computer Science 2020-10-27 Sayyed M. Zahiri , Ali Ahmadvand

Contrastive learning models have demonstrated impressive abilities to capture semantic similarities by aligning representations in the embedding space. However, their performance can be limited by the quality of the training data and its…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Amirabbas Afzali , Borna Khodabandeh , Ali Rasekh , Mahyar JafariNodeh , Sepehr kazemi , Simon Gottschalk

Considering the importance of detecting hateful language, labeled hate speech data is expensive and time-consuming to collect, particularly for low-resource languages. Prior work has demonstrated the effectiveness of cross-lingual transfer…

Computation and Language · Computer Science 2025-05-27 Faeze Ghorbanpour , Daryna Dementieva , Alexander Fraser

This paper introduces a novel multimodal framework for hate speech detection in deepfake audio, excelling even in zero-shot scenarios. Unlike previous approaches, our method uses contrastive learning to jointly align audio and text…

Sound · Computer Science 2025-06-11 Rishabh Ranjan , Likhith Ayinala , Mayank Vatsa , Richa Singh

Building a benchmark dataset for hate speech detection presents various challenges. Firstly, because hate speech is relatively rare, random sampling of tweets to annotate is very inefficient in finding hate speech. To address this, prior…

Computation and Language · Computer Science 2021-11-11 Md Mustafizur Rahman , Dinesh Balakrishnan , Dhiraj Murthy , Mucahid Kutlu , Matthew Lease

We propose CHRT (Control Hidden Representation Transformation) - a controlled language generation framework that steers large language models to generate text pertaining to certain attributes (such as toxicity). CHRT gains attribute control…

Computation and Language · Computer Science 2023-06-01 Vaibhav Kumar , Hana Koorehdavoudi , Masud Moshtaghi , Amita Misra , Ankit Chadha , Emilio Ferrara

Hate speech detection has become an important research topic within the past decade. More private corporations are needing to regulate user generated content on different platforms across the globe. In this paper, we introduce a study of…

Computation and Language · Computer Science 2022-01-28 Neha Deshpande , Nicholas Farris , Vidhur Kumar

With the rise of online abuse, the NLP community has begun investigating the use of neural architectures to generate counterspeech that can "counter" the vicious tone of such abusive speech and dilute/ameliorate their rippling effect over…

Computation and Language · Computer Science 2024-02-13 Mithun Das , Saurabh Kumar Pandey , Shivansh Sethi , Punyajoy Saha , Animesh Mukherjee

White supremacists embrace a radical ideology that considers white people superior to people of other races. The critical influence of these groups is no longer limited to social media; they also have a significant effect on society in many…

Computation and Language · Computer Science 2020-10-02 Hind Saleh Alatawi , Areej Maatog Alhothali , Kawthar Mustafa Moria

Online hate speech is an important issue that breaks the cohesiveness of online social communities and even raises public safety concerns in our societies. Motivated by this rising issue, researchers have developed many traditional machine…

Computation and Language · Computer Science 2021-03-23 Rui Cao , Roy Ka-Wei Lee , Tuan-Anh Hoang

Large Language Models (LLMs) have made significant strides in generating human-like responses, largely due to preference alignment techniques. However, these methods often assume unbiased human feedback, which is rarely the case in…

Machine Learning · Computer Science 2025-09-16 Amirabbas Afzali , Amirhossein Afsharrad , Seyed Shahabeddin Mousavi , Sanjay Lall

Reinforcement Learning from Human Feedback (RLHF) has become central to aligning large language models with human values, typically by first learning a reward model from preference data which is then used to update the model with…

Machine Learning · Computer Science 2025-10-21 Keertana Chidambaram , Karthik Vinay Seetharaman , Vasilis Syrgkanis

In cross-lingual named entity recognition (NER), self-training is commonly used to bridge the linguistic gap by training on pseudo-labeled target-language data. However, due to sub-optimal performance on target languages, the pseudo labels…

Computation and Language · Computer Science 2023-06-06 Ran Zhou , Xin Li , Lidong Bing , Erik Cambria , Chunyan Miao

Multiclass hate speech detection across demographic categories remains computationally challenging due to implicit targeting strategies and linguistic variability in social media content. Existing approaches rely solely on learned…

Computation and Language · Computer Science 2026-03-06 Mahmoud Abusaqer , Jamil Saquer

Hate speech is one of the main threats posed by the widespread use of social networks, despite efforts to limit it. Although attention has been devoted to this issue, the lack of datasets and case studies centered around scarcely…

Computation and Language · Computer Science 2024-10-11 Camilla Casula , Sara Tonelli

The proliferation of hate speech on social media poses a significant threat to online communities, requiring effective detection systems. While deep learning models have shown promise, their performance often deteriorates in few-shot or…

Computation and Language · Computer Science 2025-04-23 Zhenkai Qin , Dongze Wu , Yuxin Liu , Guifang Yang