Revisiting Metric Reliability for Fine-grained Evaluation of Machine Translation and Summarization in Indian Languages
Summary
Most automatic metrics for machine translation (MT) and text summarization (TS) were designed and validated on English and similar high-resource languages, so it is unclear whether they work for Indian languages. The authors built ITEM (Indian Text Evaluation Metrics Testbed), a human-annotated benchmark covering Hindi, Bengali, Marathi, Gujarati, Tamil and Telugu. Source data came from XLSum (summaries) and FLORES-200 (translations). Outputs were generated with Cohere Command R+, GPT-4o mini and the AI4Bharat models IndicBART and IndicTrans2. Native-speaker annotators scored each output on fine-grained criteria: adequacy and fluency for MT, and faithfulness, focus, coverage and coherency for TS. The authors then tested 29 metrics on several properties: agreement with humans at segment and system level, sensitivity to outliers, consistency across languages, inter-metric correlation, and robustness to controlled perturbations. LLM-based evaluators matched human judgments best. Outliers noticeably distorted correlations. Metrics tracked content fidelity better in TS but fluency better in MT. Robustness varied widely across metrics. The work offers practical guidance on choosing and designing metrics for Indian languages.
Key points
- Dataset size: ITEM started with 5,400 annotated samples (150 items × 3 systems × 6 languages × 2 tasks). After removing items with high annotator disagreement, 2,571 TS and 2,604 MT samples remain. The dataset is released on Hugging Face under a Creative Commons license.
- Annotation and quality control: Two native-speaker annotators per language rated outputs on a 1–5 scale. Quality was checked against 20 samples per task and language, each scored by five experts. Annotator agreement within one point of the expert reference ranged from about 76% to 92.5%.
- Metric coverage: The study compares 29 metrics in many configurations, including 48 ROUGE, 144 BERTScore and 4 BLEU variants.
- Perturbation design: Robustness tests used GPT-4.1 paraphrases validated by native speakers. Entity edits relied on IndicNER. Other perturbations included negation, number changes, synonym/antonym swaps, word or sentence shuffling, stopword and character noise, adding off-topic sentences, and removing key sentences.
- COMET results under perturbation:
- Shuffling hurt COMET most in MT, and dropping key sentences hurt it most in TS.
- Paraphrases and synonyms had little effect on scores.
- Tamil and Telugu were especially sensitive to negation.
- Overall, Hindi was the most vulnerable language and Gujarati the most resilient.
Cite
@inproceedings{yari2026revisiting,
title = {{Revisiting Metric Reliability for Fine-grained Evaluation of Machine Translation and Summarization in Indian Languages}},
author = {Yari, Amir Hossein and Kulkarni, Kalmit and Khan, Ahmad Raza and Koto, Fajri},
booktitle = {Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)},
year = {2026},
doi = {10.18653/v1/2026.acl-long.1171},
url = {https://doi.org/10.18653/v1/2026.acl-long.1171}
}References
- Sweta Agrawal, António Farinhas, Ricardo Rei, and Andre Martins. 2024. Can automatic metrics assess high-quality translations? In Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing, Miami, Florida, USA. Association for Computational Linguistics. find
- Duarte Alves, Ricardo Rei, Ana C Farinha, José G. C. de Souza, and André F. T. Martins. 2022. Robust MT evaluation with sentence-level multilingual augmentation. In Proceedings of the Seventh Conference on Machine Translation (WMT), Abu Dhabi, United Arab Emirates (Hybrid). Association for Computational Linguistics. find
- Mikel Artetxe and Holger Schwenk. 2019. Massively multilingual sentence embeddings for zero-shot cross-lingual transfer and beyond. Transactions of the association for computational linguistics, 7. ↗ our card
- Satanjeev Banerjee and Alon Lavie. 2005. METEOR: An automatic metric for MT evaluation with improved correlation with human judgments. In Proceedings of the ACL Workshop on Intrinsic and Extrinsic Evaluation Measures for Machine Translation and/or Summarization, Ann Arbor, Michigan. Association for Computational Linguistics. find our card
- Vic Barnett, Toby Lewis, and 1 others. 1994. Outliers in statistical data, volume 3. Wiley New York. find
- Abhik Bhattacharjee, Tahmid Hasan, Wasi Uddin Ahmad, Yuan-Fang Li, Yong-Bin Kang, and Rifat Shahriyar. 2023. CrossSum: Beyond English-centric cross-lingual summarization for 1,500+ language pairs. In Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), Toronto, Canada. Association for Computational Linguistics. advanced reasoning, multimodality, long context, and next generation agentic capabilities. Preprint, arXiv:2507.06261. ↗ our card
- Alexis Conneau, Kartikay Khandelwal, Naman Goyal, Vishrav Chaudhary, Guillaume Wenzek, Francisco Guzmán, Edouard Grave, Myle Ott, Luke Zettlemoyer, and Veselin Stoyanov. 2020. Unsupervised cross-lingual representation learning at scale. In Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics, Online. Association for Computational Linguistics. find
- Raj Dabre, Himani Shrotriya, Anoop Kunchukuttan, Ratish Puduppully, Mitesh Khapra, and Pratyush Kumar. 2022. IndicBART: A pre-trained model for indic natural language generation. In Findings of the Association for Computational Linguistics: ACL 2022, Dublin, Ireland. Association for Computational Linguistics. find
- Debtanu Datta, Shubham Soni, Rajdeep Mukherjee, and Saptarshi Ghosh. 2023. MILDSum: A novel benchmark dataset for multilingual summarization of Indian legal case judgments. In Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing, Singapore. Association for Computational Linguistics. find
- Boxing Chen and Colin Cherry. 2014. A systematic comparison of smoothing techniques for sentence-level bleu. In Proceedings of the ninth workshop on statistical machine translation. find our card
- DeepSeek-AI, Aixin Liu, Bei Feng, Bing Xue, Bingxuan Wang, Bochao Wu, Chengda Lu, Chenggang Zhao, Chengqi Deng, Chenyu Zhang, Chong Ruan, Damai Dai, Daya Guo, Dejian Yang, Deli Chen, Dongjie Ji, Erhang Li, Fangyun Lin, Fucong Dai, and 181 others. 2025. Deepseek-v3 technical report. Preprint, arXiv:2412.19437. ↗
- Xiaoyu Chen, Daimeng Wei, Hengchao Shang, Zongyao Li, Zhanglin Wu, Zhengzhe Yu, Ting Zhu, Mengli Zhu, Ning Xie, Lizhi Lei, Shimin Tao, Hao Yang, and Ying Qin. 2022. Exploring robustness of machine translation metrics: A study of twenty-two automatic metrics in the WMT22 metric task. In Proceedings of the Seventh Conference on Machine Translation (WMT), Abu Dhabi, United Arab Emirates (Hybrid). Association for Computational Linguistics. find
- Daniel Deutsch, Eleftheria Briakou, Isaac Rayburn Caswell, Mara Finkelstein, Rebecca Galor, Juraj Juraska, Geza Kovacs, Alison Lui, Ricardo Rei, Jason Riesa, Shruti Rijhwani, Parker Riley, Elizabeth Salesky, Firas Trabelsi, Stephanie Winkler, Biao Zhang, and Markus Freitag. 2025. WMT24++: Expanding the language coverage of WMT24 to 55 languages & dialects. In Findings of the Association for Computational Linguistics: ACL 2025, Vienna, Austria. Association for Computational Linguistics. ↗
- Elizabeth Clark, Shruti Rijhwani, Sebastian Gehrmann, Joshua Maynez, Roee Aharoni, Vitaly Nikolaev, Thibault Sellam, Aditya Siddhant, Dipanjan Das, and Ankur Parikh. 2023. SEAHORSE: A multilingual, multifaceted dataset for summarization evaluation. In Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing, Singapore. Association for Computational Linguistics. ↗
- Jacob Devlin, Ming-Wei Chang, Kenton Lee, and Kristina Toutanova. 2019. BERT: Pre-training of deep bidirectional transformers for language understanding. In Proceedings of the 2019 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, Volume 1 (Long and Short Papers), Minneapolis, Minnesota. Association for Computational Linguistics. find
- Cohere Labs. 2024. c4ai-command-r-plus-08-2024. find
- Gheorghe Comanici, Eric Bieber, Mike Schaekermann, Ice Pasupat, Noveen Sachdeva, Inderjit Dhillon, Marcel Blistein, Ori Ram, Dan Zhang, Evan Rosen, Luke Marris, Sam Petulla, Colin Gaffney, Asaf Aharoni, Nathan Lintz, Tiago Cardal Pais, Henrik Jacobsson, Idan Szpektor, Nan-Jiang Jiang, and 3290 others. 2025. Gemini 2.5: Pushing the frontier with George Doddington. 2002. Automatic evaluation of machine translation quality using n-gram co-occurrence statistics. In Proceedings of the second international conference on Human Language Technology Research. find
- Alexander R. Fabbri, Wojciech Kryściński, Bryan Mc-Cann, Caiming Xiong, Richard Socher, and Dragomir Radev. 2021. Summeval: Re-evaluating summarization evaluation. Preprint, arXiv:2007.12626. ↗
- Fangxiaoyu Feng, Yinfei Yang, Daniel Cer, Naveen Arivazhagan, and Wei Wang. 2022. Language-agnostic BERT sentence embedding. In Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), Dublin, Ireland. Association for Computational Linguistics. find our card
- Gabriel Forgues, Joelle Pineau, Jean-Marie Larchevêque, and Réal Tremblay. 2014. Bootstrapping dialog systems with word embeddings. In Nips, modern machine learning and natural language processing workshop, volume 2. find
- Markus Freitag, Nitika Mathur, Daniel Deutsch, Chi-Kiu Lo, Eleftherios Avramidis, Ricardo Rei, Brian Thompson, Frederic Blain, Tom Kocmi, Jiayi Wang, David Ifeoluwa Adelani, Marianna Buchicchio, Chrysoula Zerva, and Alon Lavie. 2024. Are LLMs breaking MT metrics? results of the WMT24 metrics shared task. In Proceedings of the Ninth Conference on Machine Translation, Miami, Florida, USA. Association for Computational Linguistics. find our card
- Jinlan Fu, See-Kiong Ng, Zhengbao Jiang, and Pengfei Liu. 2024. GPTScore: Evaluate as you desire. In Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers), Mexico City, Mexico. Association for Computational Linguistics. ↗
- Jay Gala, Pranjal A. Chitale, Raghavan AK, Varun Gumma, Sumanth Doddapaneni, Aswanth Kumar, Janki Nawale, Anupama Sujatha, Ratish Puduppully, Vivek Raghavan, Pratyush Kumar, Mitesh M. Khapra, Raj Dabre, and Anoop Kunchukuttan. 2023. Indictrans2: Towards high-quality and accessible machine translation models for all 22 scheduled indian languages. Preprint, arXiv:2305.16307. ↗ our card
- Aaron Grattafiori, Abhimanyu Dubey, Abhinav Jauhri, Abhinav Pandey, Abhishek Kadian, Ahmad Al-Dahle, Aiesha Letman, Akhil Mathur, Alan Schelten, Alex Vaughan, Amy Yang, Angela Fan, Anirudh Goyal, Anthony Hartshorn, Aobo Yang, Archi Mitra, Archie Sravankumar, Artem Korenev, Arthur Hinsvark, and 542 others. 2024. The llama 3 herd of models. Preprint, arXiv:2407.21783. ↗
- Nuno M. Guerreiro, Ricardo Rei, Daan van Stigt, Luisa Coheur, Pierre Colombo, and André F. T. Martins. 2024. xCOMET: Transparent machine translation evaluation through fine-grained error detection. Transactions of the Association for Computational Linguistics, 12. ↗ our card
- Yue Guo, Tal August, Gondy Leroy, Trevor Cohen, and Lucy Lu Wang. 2024. APPLS: Evaluating evaluation metrics for plain language summarization. In Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing, Miami, Florida, USA. Association for Computational Linguistics. find
- Rishav Hada, Varun Gumma, Mohamed Ahmed, Kalika Bali, and Sunayana Sitaram. 2024. METAL: Towards multilingual meta-evaluation. In Findings of the Association for Computational Linguistics: NAACL 2024, Mexico City, Mexico. Association for Computational Linguistics. find
- Aaron L. F. Han, Derek F. Wong, and Lidia S. Chao. 2012. LEPOR: A robust evaluation metric for machine translation with augmented factors. In Proceedings of COLING 2012: Posters, Mumbai, India. find
- The COLING 2012 Organizing Committee. find
- Rilyn Han, Jiawen Chen, Yixin Liu, and Arman Cohan. 2024. Rethinking efficient multilingual text summarization meta-evaluation. In Findings of the Association for Computational Linguistics: ACL 2024, Bangkok, Thailand. Association for Computational Linguistics. Tahmid Hasan, Abhik Bhattacharjee, Md. find
- Saiful Islam, Kazi Mubasshir, Yuan-Fang Li, Yong-Bin Kang, M. Sohel Rahman, and Rifat Shahriyar. 2021. XL-sum: Large-scale multilingual abstractive summarization for 44 languages. In Findings of the Association for Computational Linguistics: ACL-IJCNLP 2021. Association for Computational Linguistics. find
- Yichen Huang and Timothy Baldwin. 2023. Robustness tests for automatic machine translation metrics with adversarial attacks. In Findings of the Association for Computational Linguistics: EMNLP 2023, Singapore. Association for Computational Linguistics. ↗
- Boris Iglewicz and David C Hoaglin. 1993. Volume 16: how to detect and handle outliers. Quality Press. find
- Juraj Juraska, Daniel Deutsch, Mara Finkelstein, and Markus Freitag. 2024. MetricX-24: The Google submission to the WMT 2024 metrics shared task. In Proceedings of the Ninth Conference on Machine Translation, Miami, Florida, USA. Association for Computational Linguistics. find our card
- Divyanshu Kakwani, Anoop Kunchukuttan, Satish Golla, Gokul N.C., Avik Bhattacharyya, Mitesh M. Khapra, and Pratyush Kumar. 2020. IndicNLPSuite: Monolingual corpora, evaluation benchmarks and pre-trained multilingual language models for Indian languages. In Findings of the Association for Computational Linguistics: EMNLP 2020, Online. Association for Computational Linguistics. find
- Tom Kocmi, Ekaterina Artemova, Eleftherios Avramidis, Rachel Bawden, Ondřej Bojar, Konstantin Dranch, Anton Dvorkovich, Sergey Dukanov, Mark Fishel, Markus Freitag, Thamme Gowda, Roman Grundkiewicz, Barry Haddow, Marzena Karpinska, Philipp Koehn, Howard Lakougna, Jessica Lundin, Christof Monz, Kenton Murray, and 10 others. 2025. Findings of the WMT25 general machine translation shared task: Time to stop evaluating on easy test sets. In Proceedings of the Tenth Conference on Machine Translation, Suzhou, China. Association for Computational Linguistics. find our card
- Tom Kocmi and Christian Federmann. 2023. Large language models are state-of-the-art evaluators of translation quality. In Proceedings of the 24th Annual Conference of the European Association for Machine Translation, Tampere, Finland. European Association for Machine Translation. ↗
- and Anoop Kunchukuttan. 2023. Naamapadam: A large-scale named entity annotated data for Indic languages. In Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), Toronto, Canada. Association for Computational Linguistics. ↗
- Philipp Koehn and Christof Monz. 2006. Manual and automatic evaluation of machine translation between European languages. In Proceedings on the Workshop on Statistical Machine Translation, New York City. Association for Computational Linguistics. find our card
- Andrew Mutton, Mark Dras, Stephen Wan, and Robert Dale. 2007. GLEU: Automatic evaluation of sentence-level fluency. In Proceedings of the 45th Annual Meeting of the Association of Computational Linguistics, Prague, Czech Republic. Association for Computational Linguistics. find
- Fajri Koto, Timothy Baldwin, and Jey Han Lau. 2022. FFCI: A framework for interpretable automatic evaluation of summarization. Journal of Artificial Intelligence Research, 73. ↗
- Fajri Koto, Jey Han Lau, and Timothy Baldwin. 2021. Evaluating the efficacy of summarization evaluation across languages. In Findings of the Association for Computational Linguistics: ACL-IJCNLP 2021, Online. Association for Computational Linguistics. find
- Raghvendra Kumar, Mohammed Salman S A, Aryan Sahu, Tridib Nandi, Pragathi Y P, Sriparna Saha, and Jose G Moreno. 2025. COSMMIC: Comment-sensitive multimodal multilingual Indian corpus for summarization and headline generation. In Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), Vienna, Austria. Association for Computational Linguistics. find
- Thomas K Landauer and Susan T Dumais. 1997. A solution to plato’s problem: The latent semantic analysis theory of acquisition, induction, and representation of knowledge. Psychological review, 104(2):211. ↗
- Christophe Leys, Christophe Ley, Olivier Klein, Philippe Bernard, and Laurent Licata. 2013. Detecting outliers: Do not use standard deviation around the mean, use absolute deviation around the median. Journal of experimental social psychology, 49(4). ↗
- Zihao Li, Yucheng Shi, Zirui Liu, Fan Yang, Ali Payani, Ninghao Liu, and Mengnan Du. 2025. Language ranker: A metric for quantifying LLM performance across high and low-resource languages. In Proceedings of the AAAI Conference on Artificial Intelligence, volume 39. find
- Chin-Yew Lin. 2004. ROUGE: A package for automatic evaluation of summaries. In Text Summarization Branches Out, Barcelona, Spain. Association for Computational Linguistics. find
- Nitika Mathur, Timothy Baldwin, and Trevor Cohn. 2020. Tangled up in BLEU: Reevaluating the evaluation of automatic machine translation evaluation metrics. In Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics, Online. Association for Computational Linguistics. Arnav Mhaske, Harshit Kedia, Sumanth Doddapaneni, Mitesh M. Khapra, Pratyush Kumar, Rudra Murthy, OpenAI, :, Aaron Hurst, Adam Lerer, Adam P. Goucher, Adam Perelman, Aditya Ramesh, Aidan Clark, AJ Ostrow, Akila Welihinda, Alan Hayes, Alec Radford, Aleksander M adry, Alex Baker-Whitcomb, Alex Beutel, Alex Borzunov, Alex Carney, Alex Chow, Alex Kirillov, and 401 others. 2024. Gpt-4o system card. Preprint, arXiv:2410.21276. ↗ our card
- Kishore Papineni, Salim Roukos, Todd Ward, and Wei-Jing Zhu. 2002. Bleu: a method for automatic evaluation of machine translation. In Proceedings of the 40th Annual Meeting of the Association for Computational Linguistics, Philadelphia, Pennsylvania, USA. Association for Computational Linguistics. find our card
- Kevin Patel, Suraj Agrawal, and Ayush Kumar. 2024. Tweak to trust: Assessing the reliability of summarization metrics in contact centers via perturbed summaries. In Proceedings of the 4th Workshop on Trustworthy Natural Language Processing (TrustNLP 2024), Mexico City, Mexico. Association for Computational Linguistics. find
- Maja Popović. 2015. chrF: character n-gram F-score for automatic MT evaluation. In Proceedings of the Tenth Workshop on Statistical Machine Translation, Lisbon, Portugal. Association for Computational Linguistics. find our card
- Maja Popović. 2017. chrF++: words helping character n-grams. In Proceedings of the Second Conference on Machine Translation, Copenhagen, Denmark. Association for Computational Linguistics. find our card
- Matt Post. 2018. A call for clarity in reporting BLEU scores. In Proceedings of the Third Conference on Machine Translation: Research Papers, Brussels, Belgium. Association for Computational Linguistics. find our card
- Ricardo Rei, Craig Stewart, Ana C Farinha, and Alon Lavie. 2020. COMET: A neural framework for MT evaluation. In Proceedings of the 2020 Conference on Empirical Methods in Natural Language Processing (EMNLP), Online. Association for Computational Linguistics. find our card
- Vasile Rus and Mihai Lintean. 2012. A comparison of greedy and optimal assessment of natural language student input using word-to-word similarity metrics. In Proceedings of the Seventh Workshop on Building Educational Applications Using NLP, Montréal, Canada. Association for Computational Linguistics. find
- Ananya Sai B, Tanay Dixit, Vignesh Nagarajan, Anoop Kunchukuttan, Pratyush Kumar, Mitesh M. Khapra, and Raj Dabre. 2023. IndicMT eval: A dataset to meta-evaluate machine translation metrics for Indian languages. In Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), Toronto, Canada. Association for Computational Linguistics. ↗
- Weizhe Yuan, Graham Neubig, and Pengfei Liu. 2021. Bartscore: Evaluating generated text as text generation. Preprint, arXiv:2106.11520. ↗ our card
- Thibault Sellam, Dipanjan Das, and Ankur Parikh. 2020. BLEURT: Learning robust metrics for text generation. In Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics, Online. Association for Computational Linguistics. find
- Wei Zhao, Maxime Peyrard, Fei Liu, Yang Gao, Christian M. Meyer, and Steffen Eger. 2019. MoverScore: Text generation evaluating with contextualized embeddings and earth mover distance. In Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP), Hong Kong, China. Association for Computational Linguistics. ↗ our card
- Anushka Singh, Ananya Sai, Raj Dabre, Ratish Puduppully, Anoop Kunchukuttan, and Mitesh Khapra. 2024. How good is zero-shot MT evaluation for low resource Indian languages? In Proceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers), Bangkok, Thailand. Association for Computational Linguistics. ↗
- Juhi Tandon and Dipti Misra Sharma. 2017. Unity in diversity: A unified parsing strategy for major Indian languages. In Proceedings of the Fourth International Conference on Dependency Linguistics (Depling 2017), Pisa, Italy. Linköping University Electronic Press. find
- NLLB Team, Marta R. Costa-jussà, James Cross, Onur Çelebi, Maha Elbayad, Kenneth Heafield, Kevin Heffernan, Elahe Kalbassi, Janice Lam, Daniel Licht, Jean Maillard, Anna Sun, Skyler Wang, Guillaume Wenzek, Al Youngblood, Bapi Akula, Loic Barrault, Gabriel Mejia Gonzalez, Prangthip Hansanti, and 20 others. 2022. No language left behind: Scaling human-centered machine translation. Preprint, arXiv:2207.04672. ↗
- Ashok Urlana, Pinzhen Chen, Zheng Zhao, Shay Cohen, Manish Shrivastava, and Barry Haddow. 2023. PMIn-diaSum: Multilingual and cross-lingual headline summarization for languages in India. In Findings of the Association for Computational Linguistics: EMNLP 2023, Singapore. Association for Computational Linguistics. find
- Guojun Wu, Shay B Cohen, and Rico Sennrich. 2024. Evaluating automatic metrics with incremental machine translation systems. In Findings of the Association for Computational Linguistics: EMNLP 2024, Miami, Florida, USA. Association for Computational Linguistics. ↗
- Amir Hossein Yari and Fajri Koto. 2025. Unveiling cultural blind spots: Analyzing the limitations of mLLMs in procedural text comprehension. In Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), Vienna, Austria. Association for Computational Linguistics. find
- Tianyi Zhang, Varsha Kishore, Felix Wu, Kilian Q. Weinberger, and Yoav Artzi. 2020. Bertscore: Evaluating text generation with bert. Preprint, arXiv:1904.09675. ↗
This page in Markdown → https://md.research.elamur.ai/free/en/papers/yari-2026-revisiting-metric-reliability-fine-grained/