What purrcat259 said, and I think that the page should explain it, we will add a tooltip.
for some languages CER is more relevant than WER. Thai and Mandarin have no word boundaries, so we score them by character, and Japanese gets a reading-based CER.
for some languages CER is more relevant than WER. Thai and Mandarin have no word boundaries, so we score them by character, and Japanese gets a reading-based CER.