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- W4385570250 abstract "Word error rate (WER) and character error rate (CER) are standard metrics in Speech Recognition (ASR), but one problem has always been alternative spellings: If one’s system transcribes adviser whereas the ground truth has advisor, this will count as an error even though the two spellings really represent the same word. Japanese is notorious for “lacking orthography”: most words can be spelled in multiple ways, presenting a problem for accurate ASR evaluation. In this paper we propose a new lenient evaluation metric as a more defensible CER measure for Japanese ASR. We create a lattice of plausible respellings of the reference transcription, using a combination of lexical resources, a Japanese text-processing system, and a neural machine translation model for reconstructing kanji from hiragana or katakana. In a manual evaluation, raters rated 95.4% of the proposed spelling variants as plausible. ASR results show that our method, which does not penalize the system for choosing a valid alternate spelling of a word, affords a 2.4%–3.1% absolute reduction in CER depending on the task." @default.
- W4385570250 created "2023-08-05" @default.
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- W4385570250 date "2023-01-01" @default.
- W4385570250 modified "2023-09-24" @default.
- W4385570250 title "Lenient Evaluation of Japanese Speech Recognition: Modeling Naturally Occurring Spelling Inconsistency" @default.
- W4385570250 doi "https://doi.org/10.18653/v1/2023.cawl-1.8" @default.
- W4385570250 hasPublicationYear "2023" @default.
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