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Kalina Bontcheva

7 accepted papers

2024

Examining Temporalities on Stance Detection towards COVID-19 Vaccination

COLING 2024main

Previous studies have highlighted the importance of vaccination as an effective strategy to control the transmission of the COVID-19 virus. It is crucial for policymakers to have a comprehensive understanding of the public’s stance towards vaccination on a large scale. However, attitudes towards COV…

Cited by 7SourcePDFScholar
2024

Examining the Limitations of Computational Rumor Detection Models Trained on Static Datasets

COLING 2024main

A crucial aspect of a rumor detection model is its ability to generalize, particularly its ability to detect emerging, previously unknown rumors. Past research has indicated that content-based (i.e., using solely source post as input) rumor detection models tend to perform less effectively on unseen…

2024

Large Language Models Offer an Alternative to the Traditional Approach of Topic Modelling

COLING 2024main

Topic modelling, as a well-established unsupervised technique, has found extensive use in automatically detecting significant topics within a corpus of documents. However, classic topic modelling approaches (e.g., LDA) have certain drawbacks, such as the lack of semantic understanding and the presen…

2024

Navigating Prompt Complexity for Zero-Shot Classification: A Study of Large Language Models in Computational Social Science

COLING 2024main

Instruction-tuned Large Language Models (LLMs) have exhibited impressive language understanding and the capacity to generate responses that follow specific prompts. However, due to the computational demands associated with training these models, their applications often adopt a zero-shot setting. In…

Cited by 29SourcePDFScholar
2023

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

EMNLP 2023short main

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. We describe our content acquisition methodology and perform cross-si…

Cited by 0SourcecodeScholar
2023

Don't waste a single annotation: improving single-label classifiers through soft labels

EMNLP 2023short findings

In this paper, we address the limitations of the common data annotation and training methods for objective single-label classification tasks. Typically, when annotating such tasks annotators are only asked to provide a single label for each sample and annotator disagreement is discarded when a final…

Cited by 0SourceScholar
2022

On the Impact of Temporal Concept Drift on Model Explanations

EMNLP 2022finding

Explanation faithfulness of model predictions in natural language processing is typically evaluated on held-out data from the same temporal distribution as the training data (i.e. synchronous settings). While model performance often deteriorates due to temporal variation (i.e. temporal concept drift…