Papers for

translation software teams

Papers whose findings have a practical use for this group, as judged from the abstract. Open a paper to read what it means in practice.

Word error rate often misaligns with human speech recognition quality judgments

Rethinking Human-Aligned Evaluation: An Analysis of Semantic Metrics Beyond WER

Abstract: Word Error Rate (WER), the most commonly used metric for Automatic Speech Recognition (ASR), treats every lexical deviation from the reference as equally costly, regardless of whether it changes meaning. This raises the question: does WER actually track how humans judge ASR transcript quality? We introduce HATS-en, an English dataset for human-centered ASR evaluation. Using this dataset, we benchmark lexical metrics against several configurations of BERTScore and SemDist, varying the language model, layer, and pooling strategy. We find that WER agrees least with human judgment among all metrics tested, that the best-performing SemDist configurations achieve the highest overall agreement, ahead of CER and BERTScore, and that no single model is best across settings. CER, despite its simplicity and low cost, remains remarkably close to these best configurations. In line with prior recommendations, our results support shifting ASR evaluation toward CER both for English and for morphosyllabic writing systems as it is a more interpretable and low-cost metric for what evaluation should actually capture, and using SemDist as a complementary evaluation.

Fri 18 SeptComputation and Language
The gist
Speech recognition systems are commonly judged by how many words they get wrong, but this method treats all mistakes as equally bad even if some don’t change the meaning. The authors created a new dataset to compare different ways of measuring errors against what people actually think about transcript quality. They found that word error rate is the least aligned with human opinions, while some newer metrics do better, though no one method is best in all cases. Simple character error rate also works surprisingly well and is cheap to compute. They suggest using character error rate as the main metric and newer semantic measures as a helpful complement.
Open → 2609.21663v1