Evaluation of Multilingual Image Captioning: How far can we get with CLIP models?
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| Format: | Preprint |
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2025
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| _version_ | 1866916617965797376 |
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| author | Gomes, Gonçalo Zerva, Chrysoula Martins, Bruno |
| author_facet | Gomes, Gonçalo Zerva, Chrysoula Martins, Bruno |
| contents | The evaluation of image captions, looking at both linguistic fluency and semantic correspondence to visual contents, has witnessed a significant effort. Still, despite advancements such as the CLIPScore metric, multilingual captioning evaluation has remained relatively unexplored. This work presents several strategies, and extensive experiments, related to evaluating CLIPScore variants in multilingual settings. To address the lack of multilingual test data, we consider two different strategies: (1) using quality aware machine-translated datasets with human judgements, and (2) re-purposing multilingual datasets that target semantic inference and reasoning. Our results highlight the potential of finetuned multilingual models to generalize across languages and to handle complex linguistic challenges. Tests with machine-translated data show that multilingual CLIPScore models can maintain a high correlation with human judgements across different languages, and additional tests with natively multilingual and multicultural data further attest to the high-quality assessments. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2502_06600 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Evaluation of Multilingual Image Captioning: How far can we get with CLIP models? Gomes, Gonçalo Zerva, Chrysoula Martins, Bruno Computation and Language Artificial Intelligence The evaluation of image captions, looking at both linguistic fluency and semantic correspondence to visual contents, has witnessed a significant effort. Still, despite advancements such as the CLIPScore metric, multilingual captioning evaluation has remained relatively unexplored. This work presents several strategies, and extensive experiments, related to evaluating CLIPScore variants in multilingual settings. To address the lack of multilingual test data, we consider two different strategies: (1) using quality aware machine-translated datasets with human judgements, and (2) re-purposing multilingual datasets that target semantic inference and reasoning. Our results highlight the potential of finetuned multilingual models to generalize across languages and to handle complex linguistic challenges. Tests with machine-translated data show that multilingual CLIPScore models can maintain a high correlation with human judgements across different languages, and additional tests with natively multilingual and multicultural data further attest to the high-quality assessments. |
| title | Evaluation of Multilingual Image Captioning: How far can we get with CLIP models? |
| topic | Computation and Language Artificial Intelligence |
| url | https://arxiv.org/abs/2502.06600 |