Challenge: Hate speech detection deals with many language variants, slang, nuances, and cultural nuances.
Approach: They propose to use large language models to detect hate speech in Rioplatense Spanish . they compare their results to those of a state-of-the-art BERT classifier .
Outcome: The proposed models show lower precision than the state-of-the-art classifier, but are sensitive to highly nuanced cases.

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Decoding Hate: Exploring Language Models’ Reactions to Hate Speech (2025.naacl-long)

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Challenge: Large Language Models (LLMs) are trained on vast amounts of unmoderated internet data, enabling them to generate text autonomously.
Approach: They investigate the responses of seven state-of-the-art Large Language Models (LLMs) to hate speech by qualitative analysis.
Outcome: The proposed models can handle hate speech inputs and mitigate it through fine-tuning and guideline guardrailing.
Data-Efficient Strategies for Expanding Hate Speech Detection into Under-Resourced Languages (2022.emnlp-main)

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Challenge: Hate speech datasets focus on English-language content, hindering effective models . annotating hateful content is expensive, time-consuming and potentially harmful to annotators.
Approach: They propose to use ISO 639-1 codes to fine-tune models on one source language and apply them to another language.
Outcome: The proposed approach performs well on some tasks, but fails on many others.
Evaluating ChatGPT against Functionality Tests for Hate Speech Detection (2024.lrec-main)

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Challenge: Large language models like ChatGPT have shown a great promise in detecting hate speech, but they lack the capability to perform in a holistic fashion.
Approach: They evaluate the ChatGPT model's strengths and weaknesses by performing functional tests across 11 languages to uncover their weaknesses.
Outcome: The proposed model performs poorly across 11 languages and is based on functional tests.
Probing LLMs for hate speech detection: strengths and vulnerabilities (2023.findings-emnlp)

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Challenge: Recent efforts to detect hateful or toxic language using large language models have not used explanation, additional context and victim community information in the detection process.
Approach: They use different prompt variations, input information and victim community information to evaluate large language models in zero shot setting without adding any in-context examples.
Outcome: The proposed models perform significantly better when included in the pipeline than baseline models.
The Challenges of Creating a Parallel Multilingual Hate Speech Corpus: An Exploration (2024.lrec-main)

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Challenge: Hate speech is one of the most demanding topics in Natural Language Processing, as its multifaceted nature is accompanied by a handful of challenges, such as multilinguality and cross-linguality.
Approach: They propose a pipeline that could be used to create a parallel multilingual hate speech dataset using machine translation.
Outcome: The proposed pipeline will be able to create a parallel multilingual hate speech dataset using machine translation.
HateCheckHIn: Evaluating Hindi Hate Speech Detection Models (2022.lrec-1)

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Challenge: Hate speech detection models are evaluated on a held-out test data, but they are incapable of identifying weaknesses.
Approach: They propose to use multilingual hate speech detection models to evaluate their performance on social media conversation.
Outcome: The proposed model can detect hate speech in multiple languages using a real-world conversation on social media.
Word-Level Detection of Code-Mixed Hate Speech with Multilingual Domain Transfer (2025.findings-acl)

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Challenge: a growing problem in language detection tasks is code-mixing, a combination of more than one language . lack of available datasets for code-mixing causes the problem . authors propose a multilingual approach to code-matching .
Approach: They propose to use an annotated hate speech dataset to detect code-mixing in profane language . they propose to apply bilingual fine-tuned models to code-mixed hate speech in german rap lyrics .
Outcome: The proposed model can detect code-mixed hate speech and neologisms in German rap lyrics . the proposed model is more nuanced than binary classification .
HateBRXplain: A Benchmark Dataset with Human-Annotated Rationales for Explainable Hate Speech Detection in Brazilian Portuguese (2025.coling-main)

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Challenge: Hate speech detection systems have been developed to inhibit offensive and hateful language from being published or spread on the Web and social media.
Approach: They propose to use a Portuguese dataset to provide rationales for hate speech detection with text span annotations.
Outcome: The proposed models outperform the baselines in Portuguese and showed that they provide plausible explanations when compared to human annotations.
Multilingual and Multi-Aspect Hate Speech Analysis (D19-1)

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Challenge: Current research on hate speech analysis is oriented towards monolingual and single classification tasks.
Approach: They propose to use a multilingual multi-aspect hate speech analysis dataset to test current methods . they evaluate the dataset in various classification settings and discuss how to leverage annotations .
Outcome: The proposed dataset can be used to improve hate speech detection and classification in general.
HateDay: Insights from a Global Hate Speech Dataset Representative of a Day on Twitter (2025.acl-long)

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Challenge: Prior work on automated hate speech detection models has been limited due to systematic biases in evaluation datasets and poor performance across geographies.
Approach: They propose to construct a global hate speech dataset representative of social media settings from tweets posted on September 21, 2022.
Outcome: The proposed dataset covers eight languages and four English-speaking countries and covers eight countries where English is the main language on Twitter.

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