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Existing metrics for evaluating the quality of automatically generated questions such as BLEU, ROUGE, BERTScore, and BLEURT compare the reference and predicted questions, providing a high score when there is a considerable lexical overlap…

Computation and Language · Computer Science 2023-05-29 Alireza Mohammadshahi , Thomas Scialom , Majid Yazdani , Pouya Yanki , Angela Fan , James Henderson , Marzieh Saeidi

In this paper, we investigate the use of linguistically motivated and computationally efficient structured language models for reranking N-best hypotheses in a statistical machine translation system. These language models, developed from…

Computation and Language · Computer Science 2021-04-27 Wen Wang , Andreas Stolcke , Jing Zheng

Natural language (NL) is arguably the most prevalent medium for expressing systems and software requirements. Detecting incompleteness in NL requirements is a major challenge. One approach to identify incompleteness is to compare…

Software Engineering · Computer Science 2024-02-16 Dipeeka Luitel , Shabnam Hassani , Mehrdad Sabetzadeh

Evaluating natural language generation (NLG) systems in the medical domain presents unique challenges due to the critical demands for accuracy, relevance, and domain-specific expertise. Traditional automatic evaluation metrics, such as…

Computation and Language · Computer Science 2025-09-17 Wen-wai Yim , Asma Ben Abacha , Zixuan Yu , Robert Doerning , Fei Xia , Meliha Yetisgen

Automatic open-domain dialogue evaluation has attracted increasing attention, yet remains challenging due to the complexity of assessing response appropriateness. Traditional evaluation metrics, typically trained with true positive and…

Computation and Language · Computer Science 2025-09-17 Bohao Yang , Kun Zhao , Dong Liu , Chen Tang , Liang Zhan , Chenghua Lin

Retrieval-Augmented Generation (RAG) enhances factual grounding in large language models (LLMs) by incorporating retrieved evidence, but LLM accuracy declines when long or noisy contexts exceed the model's effective attention span. Existing…

Computation and Language · Computer Science 2026-03-25 Debashish Chakraborty , Eugene Yang , Daniel Khashabi , Dawn Lawrie , Kevin Duh

Recent studies show that Generative Relevance Feedback (GRF), using text generated by Large Language Models (LLMs), can enhance the effectiveness of query expansion. However, LLMs can generate irrelevant information that harms retrieval…

Information Retrieval · Computer Science 2023-06-19 Iain Mackie , Ivan Sekulic , Shubham Chatterjee , Jeffrey Dalton , Fabio Crestani

Evaluation is a bottleneck in the development of natural language generation (NLG) models. Automatic metrics such as BLEU rely on references, but for tasks such as open-ended generation, there are no references to draw upon. Although…

Computation and Language · Computer Science 2020-10-14 Kawin Ethayarajh , Dorsa Sadigh

Retrieval-Augmented Generation (RAG) addresses large language model (LLM) hallucinations by grounding responses in external knowledge, but its effectiveness is compromised by poor-quality retrieved contexts containing irrelevant or noisy…

Computation and Language · Computer Science 2025-10-27 Jiale Deng , Yanyan Shen , Ziyuan Pei , Youmin Chen , Linpeng Huang

Unlike classical lexical overlap metrics such as BLEU, most current evaluation metrics (such as BERTScore or MoverScore) are based on black-box language models such as BERT or XLM-R. They often achieve strong correlations with human…

Computation and Language · Computer Science 2022-03-22 Christoph Leiter , Piyawat Lertvittayakumjorn , Marina Fomicheva , Wei Zhao , Yang Gao , Steffen Eger

Automatic evaluation of generated textual content presents an ongoing challenge within the field of NLP. Given the impressive capabilities of modern language models (LMs) across diverse NLP tasks, there is a growing trend to employ these…

Computation and Language · Computer Science 2024-06-10 Yiqi Liu , Nafise Sadat Moosavi , Chenghua Lin

Current evaluation metrics to question answering based machine reading comprehension (MRC) systems generally focus on the lexical overlap between the candidate and reference answers, such as ROUGE and BLEU. However, bias may appear when…

Computation and Language · Computer Science 2018-06-12 An Yang , Kai Liu , Jing Liu , Yajuan Lyu , Sujian Li

Despite advances in open-domain dialogue systems, automatic evaluation of such systems is still a challenging problem. Traditional reference-based metrics such as BLEU are ineffective because there could be many valid responses for a given…

Computation and Language · Computer Science 2019-04-25 Sarik Ghazarian , Johnny Tian-Zheng Wei , Aram Galstyan , Nanyun Peng

With the advancement of large language models (LLMs) and the expansion of their context windows, existing long-context benchmarks fall short in effectively evaluating the models' comprehension and reasoning abilities in extended texts.…

Computation and Language · Computer Science 2024-06-27 Lei Zhang , Yunshui Li , Ziqiang Liu , Jiaxi yang , Junhao Liu , Longze Chen , Run Luo , Min Yang

Modern Large Language Model (LLM) systems typically rely on Retrieval Augmented Generation (RAG) which aims to gather context that is useful for response generation. These RAG systems typically optimize strictly towards retrieving context…

Information Retrieval · Computer Science 2025-04-11 Will LeVine , Bijan Varjavand

As connected and automated transportation systems evolve, there is a growing need for federal and state authorities to revise existing laws and develop new statutes to address emerging cybersecurity and data privacy challenges. This study…

Sequential recommendation aims to predict the next item a user is likely to prefer based on their sequential interaction history. Recently, text-based sequential recommendation has emerged as a promising paradigm that uses pre-trained…

Information Retrieval · Computer Science 2024-09-05 Hyunsoo Kim , Junyoung Kim , Minjin Choi , Sunkyung Lee , Jongwuk Lee

Large language models can now directly generate answers to many factual questions without referencing external sources. Unfortunately, relatively little attention has been paid to methods for evaluating the quality and correctness of these…

Information Retrieval · Computer Science 2024-01-11 Negar Arabzadeh , Amin Bigdeli , Charles L. A. Clarke

Despite the recent success of automatic metrics for assessing translation quality, their application in evaluating the quality of machine-translated chats has been limited. Unlike more structured texts like news, chat conversations are…

Computation and Language · Computer Science 2024-03-14 Sweta Agrawal , Amin Farajian , Patrick Fernandes , Ricardo Rei , André F. T. Martins