Challenge: Visual captioning is an open-ended area for evaluation, requiring specialized training to improve human-correlation.
Approach: They propose a new evaluation framework rooted in information theory . they propose metric SPURTS and metric SMURF to measure fluency .
Outcome: The proposed metrics achieve state-of-the-art correlation with human judgment compared with other evaluation metrics.

Similar Papers

Learning-based Composite Metrics for Improved Caption Evaluation (P18-3)

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Challenge: Existing image captioning metrics focus on linguistic aspects and do not match human judgements at sentence-level.
Approach: They propose to incorporate lexical and semantic metrics as features to capture adequacy and fluency of captions at different linguistic levels.
Outcome: The proposed framework captures adequacy and fluency of captions at different linguistic levels.
Towards Explainable Evaluation of Language Models on the Semantic Similarity of Visual Concepts (2022.coling-1)

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Challenge: Recent advances in NLP research have focused on robustness and explainability issues of their evaluation strategies.
Approach: They propose to use pre-trained transformers to evaluate semantic similarity for visual vocabularies . they propose to provide explainable metrics for understanding the quality of retrieved instances .
Outcome: The proposed metrics highlight inabilities of widely used evaluation methods and highlight weaknesses in learned linguistic representations.
Combine to Describe: Evaluating Compositional Generalization in Image Captioning (2022.acl-srw)

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Challenge: Recent work on compositionality has focused on the ability to combine simpler concepts to understand & generate arbitrarily more complex conceptual structures.
Approach: They propose to use a set of image captioning models to benchmark their compositional generalization properties.
Outcome: The proposed models do not generalize in terms of systematicity and productivity, but are robust to synonym substitutions.
Evaluation of Multilingual Image Captioning: How far can we get with CLIP models? (2025.findings-naacl)

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Challenge: Existing approaches to evaluate image captions are English-centric, despite improvements in the CLIPScore metric . however, there are no available benchmarks for multilingual captioning evaluation .
Approach: They propose to use machine-translated and machine-repurposed datasets to evaluate CLIPScore variants in multilingual settings.
Outcome: The proposed evaluation strategies are based on machine-translated and human judgements.
Transparent Human Evaluation for Image Captioning (2022.naacl-main)

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Challenge: Recent work has demonstrated that image captioning is a complex task that requires a large amount of human input.
Approach: They develop a human evaluation protocol for image captioning models based on machine- and human-generated captions on the MSCOCO dataset.
Outcome: The proposed model improves CLIPScore, a recent metric that uses image features, and improves human judgments because it is more sensitive to recall.
Towards Actual (Not Operational) Textual Style Transfer Auto-Evaluation (D19-55)

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Challenge: elucidates the dangerous current state of style transfer auto-evaluation research.
Approach: They propose ways to aggregate the three metrics into one evaluator.
Outcome: The proposed method could be used to aggregate the three metrics into one evaluator.
CLAIR: Evaluating Image Captions with Large Language Models (2023.emnlp-main)

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Challenge: Existing measures for image caption evaluation fail to capture dimensions of similarity . a novel method that leverages the zero-shot language modeling capabilities of large language models (LLMs) demonstrates a stronger correlation with human judgments of caption quality compared to existing measures.
Approach: They propose a method that leverages the zero-shot language modeling capabilities of large language models to evaluate captions.
Outcome: The proposed method shows a stronger correlation with human judgments of caption quality compared to other measures.
SCORE: Systematic COnsistency and Robustness Evaluation for Large Language Models (2025.naacl-industry)

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Challenge: Typical evaluations of Large Language Models (LLMs) report a single accuracy metric per dataset, often derived from an optimized setup.
Approach: They propose a framework for non-adversarial evaluation of large language models that evaluates models by repeatedly testing them on the same benchmarks in various setups.
Outcome: The proposed framework evaluates models by repeatedly testing them on the same benchmarks in various setups to give a realistic estimate of their accuracy and consistency.
Evaluating the Evaluation Metrics for Style Transfer: A Case Study in Multilingual Formality Transfer (2021.emnlp-main)

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Challenge: a lack of standardized and reliable methods for automatic evaluation hinders ST . prior work has employed as many as nine different automatic systems to rate formality alone .
Approach: They evaluate automatic metrics on the oft-researched task of formality style transfer . they outline best practices for automatic evaluation in (formality) style transfer and identify models that correlate well with human judgments.
Outcome: The proposed models correlate well with human judgments and are robust across languages.
Semantic-Eval : A Semantic Comprehension Evaluation Framework for Large Language Models Generation without Training (2025.acl-long)

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Challenge: Large language models (LLMs) have emerged as key drivers of progress in the field of natural language processing.
Approach: They propose a framework that assesses LLM-generated text based on semantic understanding.
Outcome: The proposed framework surpasses traditional evaluation metrics and lags behind GPT-4.

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