VELA: An LLM-Hybrid-as-a-Judge Approach for Evaluating Long Image Captions (2025.emnlp-main)
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| Challenge: | Existing evaluation metrics for image captioning are primarily designed for short captions and are not suitable for long captions. |
| Approach: | They propose an automatic evaluation metric for long captions developed within a novel LLM-Hybrid-as-a-Judge framework. |
| Outcome: | The proposed metric outperforms existing metrics and achieves superhuman performance on LongCap-Arena. |
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