Austria

Keyphrase generation refers to the task of producing a set of words or phrases that summarises the content of a document. Continuous efforts have been dedicated to this task over the past few years, spreading across multiple lines of research, such as model architectures, data resources, and use-case scenarios. Yet, the current state of keyphrase generation remains unknown as there has been no attempt to review and analyse previous work. In this paper, we bridge this gap by presenting an analysis of over 50 research papers on keyphrase generation, offering a comprehensive overview of recent progress, limitations, and open challenges. Our findings highlight several critical issues in current evaluation practices, such as the concerning similarity among commonly-used benchmark datasets and inconsistencies in metric calculations leading to overestimated performances. Additionally, we address the limited availability of pre-trained models by releasing a strong PLM-based model for keyphrase generation as an effort to facilitate future research.

ACL 2025

An Analysis of Datasets, Metrics and Models in Keyphrase Generation

## Welcome to EMNLP 2022!
I am delighted to welcome you to EMNLP 2022! I believe this conference has been complicated beyond any precedent. Over the past year, it’s been thrilling to see the organization team approach each new puzzle with creativity and enthusiasm. We hope that those participating in Abu Dhabi as well as those joining remotely will leave the conference feeling newly inspired by the program and newly connected to our ever-growing community. Following EMNLP 2021 and major NLP conferences since, EMNLP 2022 is “hybrid,” serving both virtual and in-person participants.

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EMNLP 2022

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EMNLP 2022 will take place in Abu Dhabi from December 7th to December 11th, 2022. And it will be held in hybrid mode, both online and offline.

workshop paper

### Welcome to The 63rd Annual Meeting of the Association for Computational Linguistics (ACL 2025)

Message from the General Chair: 
*It is my great pleasure and honor to welcome you to the 63rd Annual Meeting of the Association for Computational Linguistics (ACL 2025), held in beautiful Vienna, Austria, from July 27 to August 1, 2025. ACL2025continues our field’s tradition of excellence in scholarship, innovation, and inclusivity, and I am deeply grateful to the many volunteers who have worked tirelessly to bring this event to life.* 
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Welcome to The 63rd Annual Meeting of the Association for Computational Linguistics (ACL 2025)

Current evaluations of mathematical skills in Large Language Models (LLMs) is limited in scope for both textual and multi-modal problems, as existing benchmarks are either relatively small, focus on elementary to high school topics, or are based on Olympiad-style problems borrowed from high school contests, which, while challenging, represent a highly specific niche.

Additionally, while some benchmarks adhere to a multiple-choice answer format resulting in simpler tasks and faster saturation, others rely on LLM evaluators, resulting in potential biases and inconsistencies which often remain unaddressed.

To bridge these gaps, we introduce U-MATH, a novel benchmark comprised of 1,100 previously unpublished open-ended problems sourced from current curricula of multiple US universities. The dataset is balanced across six core subjects, with 20% of the problems incorporating visual elements.

Given the open-ended nature of U-MATH problems, we employ an LLM judge for solution assessment. To this end, we release mu-MATH --- a U-MATH-derived meta-evaluation benchmark, enabling rigorous assessment of LLM judges and their performance.

We evaluate a number of general-domain and math-specific LLMs, both proprietary and open-source. Our findings highlight limited performance of the current systems on university-level problems, with a maximum accuracy of 79.7% on textual tasks and an even lower score of 55% on multi-modal ones. Judging such problems proves to be non-trivial for LLMs, with the highest attained mu-MATH F1-score of 89.5%. Furthermore, with the higher-scoring models we observe a trade-off between problem-solving and judgment performance.

U-MATH: A University-Level Benchmark for Evaluating Mathematical Skills in LLMs

This paper introduces the new and challenging TempVS benchmark, which focuses on temporal grounding and reasoning capabilities of Multimodal Large Language Models (MLLMs) in image sequences. TempVS consists of three main tests (i.e., event relation inference, sentence ordering and image ordering) and each accompanied with a basic grounding test, yielding a total of 2,085 annotated image sequences and 15k multiple-choice questions. TempVS requires MLLMs to rely on both visual and linguistic modalities to understand the temporal order of events. We extensively evaluate 38 state-of-the-art MLLMs, demonstrating that models struggle to solve TempVS. Our analysis reveals a substantial performance gap between current MLLMs and human capabilities, accompanied by fine-grained insights that suggest promising directions for future research.

Burn After Reading: Do Multimodal Large Language Models Truly Capture Order of Events in Image Sequences?

We present the ICLE-RC, a corpus of learner English texts annotated for relative clauses and related phenomena. The corpus contains a collection of 144 academic essays from the International Corpus of Learner English (ICLE; Granger et al., 2002), representing six L1 backgrounds – Finnish, Italian, Polish, Swedish, Turkish, and Urdu. These texts are annotated for over 900 relative clauses, with respect to a wide array of lexical, syntactic, semantic, and discourse features. The corpus also provides annotation of over 400 related phenomena (it-clefts, pseudo-clefts, existential-relatives, etc.). Here, we describe the corpus annotation framework, report on the IAA study, discuss the prospects of (semi-)automating annotation, and present the first results from our corpus analysis. We envisage the ICLE-RC to be used as a valuable resource for research on relative clauses in SLA, language typology, World Englishes, and discourse analysis.

ICLE-RC: International Corpus of Learner English for Relative Clauses

Wind energy project assessments present significant challenges for decision-makers, who must navigate and synthesize hundreds of pages of environmental and scientific documentation. These documents often span different regions and project scales, covering multiple domains of expertise. This process traditionally demands immense time and specialized knowledge from decision-makers. The advent of Large Language Models (LLM) and Retrieval Augmented Generation (RAG) approaches offer a transformative solution, enabling rapid, accurate cross-document information retrieval and synthesis. As the landscape of Natural Language Processing (NLP) and text generation continues to evolve, benchmarking becomes essential to evaluate and compare the performance of different RAG-based LLMs. In this paper, we present a comprehensive framework to generate a domain relevant RAG benchmark. Our framework is based on automatic question-answer generation with Human (domain experts)-AI (LLM) teaming. As a case study, we demonstrate the framework by introducing WeQA, a first-of-its-kind benchmark on the wind energy domain which comprises of multiple scientific documents/reports related to environmental aspects of wind energy projects. Our framework systematically evaluates RAG performance using diverse metrics and multiple question types with varying complexity level, providing a foundation for rigorous assessment of RAG-based systems in complex scientific domains and enabling researchers to identify areas for improvement in domain-specific applications.

WeQA: A Benchmark for Retrieval Augmented Generation in Wind Energy Domain

The first priority of action in the Sendai Framework for Disaster Risk Reduction 2015-2030 advocates the understanding of disaster risk by collecting and processing practical information related to disasters. A smart collection may be the compilation of relevant and summarized news articles focused on some key pieces of information such as disaster event type, geographic location(s), and impacts. In this article, a Multi-Task Learning (MTL) based end-to-end model has been developed to perform three related tasks: sentence classification depending on the presence of (1) relevant locations and (2) impact information to generate a summary,and (3) identification of the causes or event types in disaster news. Each of the three tasks is formulated as a multilabel binary classification problem. The results of the proposed MTL model have been compared with three popular transformer models: BERT, RoBERTa, and ALBERT. It is observed that the proposed model showed better performance scores than the other models in most cases.

Multi-Task Learning approach to identify sentences with impact and affected location in a disaster news report

Propaganda detection on social media remains challenging due to task complexity and limited high-quality labeled data. This paper introduces a novel framework that combines human expertise with Large Language Model (LLM) assistance to improve both annotation consistency and scalability. We propose a hierarchical taxonomy that organizes 14 fine-grained propaganda techniques \cite{martino2020semeval} into three broader categories, conduct a human annotation study on the HQP dataset \cite{maarouf2023hqp} that reveals low inter-annotator agreement for fine-grained labels, and implement an LLM-assisted pre-annotation pipeline that extracts propagandistic spans, generates concise explanations, and assigns local labels as well as a global label. A secondary human verification study shows significant improvements in both agreement and time-efficiency. Building on this, we fine-tune smaller language models (SLMs) to perform structured annotation. Instead of fine-tuning on human annotations, we train on high-quality LLM-generated data, allowing a large model to produce these annotations and a smaller model to learn to generate them via knowledge distillation. Our work contributes towards the development of scalable and robust propaganda detection systems, supporting the idea of transparent and accountable media ecosystems in line with SDG 16. The code is publicly available at our GitHub repository\footnote{\url{https://github.com/XplaiNLP/NLP4PI_2025_submission}}.

Hybrid Annotation for Propaganda Detection: Integrating LLM Pre-Annotations with Human Intelligence

The ability of Natural Language Processing (NLP) methods to categorize text into multiple classes has motivated their use in online content moderation tasks, such as hate speech and fake news detection. However, there is limited understanding of how or why these methods make such decisions, or why certain content is moderated in the first place. To investigate the hidden mechanisms behind content moderation, we explore multiple directions: 1) training classifiers to reverse-engineer content moderation decisions across countries; 2) explaining content moderation decisions by analyzing Shapley values and LLM-guided explanations. Our primary focus is on content moderation decisions made across countries, using pre-existing corpora sampled from the Twitter Stream Grab. Our experiments reveal interesting patterns in censored posts, both across countries and over time. Through human evaluations of LLM-generated explanations across three LLMs, we assess the effectiveness of using LLMs in content moderation. Finally, we discuss potential future directions, as well as the limitations and ethical considerations of this work.

Revealing Hidden Mechanisms of Cross-Country Content Moderation with Natural Language Processing

Publications in the AI for Good space have tended to focus on the research and model development that can support high-impact applications. However, very few AI for Good papers discuss the process of deploying and collaborating with the partner organization, and the resulting real-world impact. In this work, we share details about the close collaboration with a humanitarian-to-humanitarian (H2H) organization and how to not only deploy the AI model in a resource-constrained environment, but also how to maintain it for continuous performance updates, and share key takeaways for practitioners.

Operationalizing AI for Good: Spotlight on Deployment and Integration of AI Models in Humanitarian Work

Multilingual large language models have gained prominence for their proficiency in processing and generating text across languages. Like their monolingual counterparts, multilingual models are likely to pick up on stereotypes and other social biases during training. In this paper, we study a phenomenon we term "stereotype leakage", which refers to how training a model multilingually may lead to stereotypes expressed in one language showing up in the models' behavior in another. We propose a measurement framework for stereotype leakage and investigate its effect in English, Russian, Chinese, and Hindi and with GPT-3.5, mT5, and mBERT. Our findings show a noticeable leakage of positive, negative, and nonpolar associations across all languages. We find that GPT-3.5 exhibits the most stereotype leakage of these models, and Hindi is the most susceptible to leakage effects.

Multilingual Large Language Models Leak Human Stereotypes across Language Boundaries

While the scientific consensus on anthropogenic climate change (CC) is undisputed now for a long time, public discourse is still divided. Considering the case of Europe, in the majority of countries, an influential right-wing party propagates climate scepticism or outright denial. Our work addresses the German party, which represents the second-largest faction in the federal parliament. In order to make the partys discourse on CC accessible to NLP-based analyses, we are compiling the, a collection of parliamentary speeches and other material from various sources. We report on first analyses of this new dataset using sentiment and emotion analysis as well as classification of populist language, which demonstrate clear differences to the language use of the two largest competing parties (social democrats and conservatives). We make the corpus available to enable further studies of the party's rhetoric on CC topics.

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