I continue to make experiments and trying to understand what seems important and I have a few questions after a research in Tesseract's wiki
During the training we can see this kind of information : At iteration 100/100/100, Mean rms=4.514%, delta=19.089%, char train=96.314 %, word train=100%, skip ratio=0%, New best char error = 96.314 wrote checkpoint. - *100/100/100 :* What do this 3 numbers at the begining mean when they are different ? Which they are often, unlike in my example. - *Mean rms* I know well, it's the Root Mean Square error. But what error metric is used ? Usually it is some kind of distance, the Levenshtein distance is often appropriate for OCR tasks but the "%" wouldn't be there if it was. - *delta* I don't know - *char train *must be the percentage of wrong character predictions during the *training* - *word train *must be the percentage of wrong word predictions during the *training* - * skip ratio *is I think the percentage of samples skip for any reason (invalid data or something) Does anyone can help me understand them please ? Also, I do not see any error on evaluation during the training. Which would be really helpful to avoid overfitting. The only way I would know how to follow the *evaluation* error during the training would be to try a lstmeval on each checkpoint, but I think there must be a better way ? Otherwise the *--eval_listfile *argument would be useless in lstmtraining, but I can't find out how it is used. Thank you :) Le jeudi 27 juin 2019 19:17:46 UTC+2, shree a écrit : > > See > https://github.com/tesseract-ocr/tesseract/blob/master/doc/lstmeval.1.asc > > When using checkpoint you need to also use the starter traineddata file > used for training. > > Or give final traineddata file as model. > > So, if after training u have converted the checkpoint to a traineddata, > you can use that as model. Similarly for the original traineddata. > -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To unsubscribe from this group and stop receiving emails from it, send an email to tesseract-ocr+unsubscr...@googlegroups.com. To post to this group, send email to tesseract-ocr@googlegroups.com. Visit this group at https://groups.google.com/group/tesseract-ocr. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/19f392d5-6d77-4830-93ff-c446d06df6fa%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
