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Matthew Purver

14 accepted papers

2025

A Dataset for Expert Reviewer Recommendation with Large Language Models as Zero-shot Rankers

COLING 2025main

The task of reviewer recommendation is increasingly important, with main techniques utilizing general models of text relevance. However, state of the art (SotA) systems still have relatively high error rates. Two possible reasons for this are: a lack of large datasets and the fact that large languag…

2025

Efficient Solutions For An Intriguing Failure of LLMs: Long Context Window Does Not Mean LLMs Can Analyze Long Sequences Flawlessly

COLING 2025main

Large Language Models (LLMs) have demonstrated remarkable capabilities in comprehending and analyzing lengthy sequential inputs, owing to their extensive context windows that allow processing millions of tokens in a single forward pass. However, this paper uncovers a surprising limitation: LLMs fall…

Cited by 8SourcePDFScholar
2025

FairCoT: Enhancing Fairness in Text-to-Image Generation via Chain of Thought Reasoning with Multimodal Large Language Models

EMNLP 2025

In the domain of text-to-image generative models, biases inherent in training datasets often propagate into generated content, posing significant ethical challenges, particularly in socially sensitive contexts. We introduce FairCoT, a novel framework that enhances fairness in text-to-image models th

2024

A Computational Analysis of the Dehumanisation of Migrants from Syria and Ukraine in Slovene News Media

COLING 2024main

Dehumanisation involves the perception and/or treatment of a social group’s members as less than human. This phenomenon is rarely addressed with computational linguistic techniques. We adapt a recently proposed approach for English, making it easier to transfer to other languages and to evaluate, in…

Cited by 4SourcePDFScholar
2024

Denoising Labeled Data for Comment Moderation Using Active Learning

COLING 2024main

Noisily labeled textual data is ample on internet platforms that allow user-created content. Training models, such as offensive language detection models for comment moderation, on such data may prove difficult as the noise in the labels prevents the model to converge. In this work, we propose to us…

Cited by 1SourcePDFScholar
2024

When Cohesion Lies in the Embedding Space: Embedding-Based Reference-Free Metrics for Topic Segmentation

COLING 2024main

In this paper we propose a new framework and new methods for the reference-free evaluation of topic segmentation systems directly in the embedding space. Specifically, we define a common framework for reference-free, embedding-based topic segmentation metrics, and show how this applies to an existin…

Cited by 2SourcePDFScholar
2023

LEDA: a Large-Organization Email-Based Decision-Dialogue-Act Analysis Dataset

ACL 2023findings

Collaboration increasingly happens online. This is especially true for large groups working on global tasks, with collaborators all around the globe. The size and distributed nature of such groups makes decision-making challenging. This paper proposes a set of dialog acts for the study of decision-m…

Cited by 3SourcePDFScholar
2023

Tracing Linguistic Markers of Influence in a Large Online Organisation

ACL 2023short

Social science and psycholinguistic research have shown that power and status affect how people use language in a range of domains. Here, we investigate a similar question in a large, distributed, consensus-driven community with little traditional power hierarchy – the Internet Engineering Task Forc…

Cited by 3SourcePDFScholar
2022

Measuring and Improving Compositional Generalization in Text-to-SQL via Component Alignment

NAACL 2022findings

In text-to-SQL tasks — as in much of NLP — compositional generalization is a major challenge: neural networks struggle with compositional generalization where training and test distributions differ. However, most recent attempts to improve this are based on word-level synthetic data or specific data…

2021

Exploring Underexplored Limitations of Cross-Domain Text-to-SQL Generalization

EMNLP 2021main

Recently, there has been significant progress in studying neural networks for translating text descriptions into SQL queries under the zero-shot cross-domain setting. Despite achieving good performance on some public benchmarks, we observe that existing text-to-SQL models do not generalize when faci…

2021

Natural SQL: Making SQL Easier to Infer from Natural Language Specifications

EMNLP 2021finding

Addressing the mismatch between natural language descriptions and the corresponding SQL queries is a key challenge for text-to-SQL translation. To bridge this gap, we propose an SQL intermediate representation (IR) called Natural SQL (NatSQL). Specifically, NatSQL preserves the core functionalities…

2021

Towards Robustness of Text-to-SQL Models against Synonym Substitution

ACL 2021long

Recently, there has been significant progress in studying neural networks to translate text descriptions into SQL queries. Despite achieving good performance on some public benchmarks, existing text-to-SQL models typically rely on the lexical matching between words in natural language (NL) questions…