EffEval: A Comprehensive Evaluation of Efficiency for MT Evaluation Metrics
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Abstract (arXiv)
Efficiency is a key property to foster inclusiveness and reduce environmental costs, especially in an era of LLMs. In this work, we provide a comprehensive evaluation of efficiency for MT evaluation metrics. Our approach involves replacing computation-intensive transformers with lighter alternatives and employing linear and quadratic approximations for alignment algorithms on top of LLM representations. We evaluate six (reference-free and reference-based) metrics across three MT datasets and examine 16 lightweight transformers. In addition, we look into the training efficiency of metrics like COMET by utilizing adapters. Our results indicate that (a) TinyBERT provides the optimal balance between quality and efficiency, (b) CPU speed-ups are more substantial than those on GPU; (c) WMD approximations yield no efficiency gains while reducing quality and (d) adapters enhance training efficiency (regarding backward pass speed and memory requirements) as well as, in some cases, metric quality. These findings can help to strike a balance between evaluation speed and quality, which is essential for effective NLG systems. Furthermore, our research contributes to the ongoing efforts to optimize NLG evaluation metrics with minimal impact on performance. To our knowledge, ours is the most comprehensive analysis of different aspects of efficiency for MT metrics conducted so far.
Key facts. Cited by 4 papers in the map (data through 7 Oct 2026). Builds on 42 of its 66 references that are in the map. First posted on arXiv 20 Sep 2022.
Builds on
42 of 66 references.
References · 42
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Built on by
Citing papers per year: 2024: 2; 2025: 2.
4 papers.
- 2025Interpretable Text Embeddings and Text Similarity Explanation: A Surveycited by 12
- 2024xCOMET-lite: Bridging the Gap Between Efficiency and Quality in Learned MT Evaluation Metricscited by 7
- 2024PromptOptMe: Error-Aware Prompt Compression for LLM-based MT Evaluation Metricscited by 4
- 2025BatchGEMBA: Token-Efficient Machine Translation Evaluation with Batched Prompting and Prompt Compressioncited by 3
- 2025BatchGEMBA: Token-Efficient Machine Translation Evaluation with Batched Prompting and Prompt Compression4 Mar 2025
- 2025Interpretable Text Embeddings and Text Similarity Explanation: A Survey20 Feb 2025
- 2024PromptOptMe: Error-Aware Prompt Compression for LLM-based MT Evaluation Metrics20 Dec 2024
- 2024xCOMET-lite: Bridging the Gap Between Efficiency and Quality in Learned MT Evaluation Metrics20 Jun 2024