Search Results for author: Freddy Heppell

Found 5 papers, 3 papers with code

Lying Blindly: Bypassing ChatGPT's Safeguards to Generate Hard-to-Detect Disinformation Claims at Scale

no code implementations13 Feb 2024 Freddy Heppell, Mehmet E. Bakir, Kalina Bontcheva

As Large Language Models (LLMs) become more proficient, their misuse in large-scale viral disinformation campaigns is a growing concern.

Analysing State-Backed Propaganda Websites: a New Dataset and Linguistic Study

1 code implementation21 Oct 2023 Freddy Heppell, Kalina Bontcheva, Carolina Scarton

This paper analyses two hitherto unstudied sites sharing state-backed disinformation, Reliable Recent News (rrn. world) and WarOnFakes (waronfakes. com), which publish content in Arabic, Chinese, English, French, German, and Spanish.

A Large-Scale Comparative Study of Accurate COVID-19 Information versus Misinformation

no code implementations10 Apr 2023 Yida Mu, Ye Jiang, Freddy Heppell, Iknoor Singh, Carolina Scarton, Kalina Bontcheva, Xingyi Song

This motivated us to carry out a comparative study of the characteristics of COVID-19 misinformation versus those of accurate COVID-19 information through a large-scale computational analysis of over 242 million tweets.

Misinformation

SheffieldVeraAI at SemEval-2023 Task 3: Mono and multilingual approaches for news genre, topic and persuasion technique classification

1 code implementation16 Mar 2023 Ben Wu, Olesya Razuvayevskaya, Freddy Heppell, João A. Leite, Carolina Scarton, Kalina Bontcheva, Xingyi Song

For Subtask 2 (Framing), we achieved first place in 3 languages, and the best average rank across all the languages, by using two separate ensembles: a monolingual RoBERTa-MUPPETLARGE and an ensemble of XLM-RoBERTaLARGE with adapters and task adaptive pretraining.

Cannot find the paper you are looking for? You can Submit a new open access paper.