As per comments by Ray, for finetune or for plus minus a few letters.
the number of iterations should be limited to 3000 or so.

It probably won't get to .2% accuracy, but you might have better results

ShreeDevi
____________________________________________________________
भजन - कीर्तन - आरती @ http://bhajans.ramparivar.com

On Tue, Sep 19, 2017 at 2:00 PM, <[email protected]> wrote:

> Hello,
>
> I am training my own traineddata model for the chi_sim language with the
> finetune training. In my trained data, there are some mathematical symbols,
> such as "∞", "β", "△" and so on, which cannot be recognized in the official
> chi_sim.traineddata model.
>
> So we change the content of the chi_sim.training_text file, and fill the
> file with our training data.
>
>
> Then executing the training command:
> training/lstmtraining --model_output ~/tesstutorial/trainspecial/special \
>   --continue_from ~/tesstutorial/trainspecial/chi_sim.lstm \
>   --traineddata ~/tesstutorial/trainspecial/chi_sim/chi_sim.traineddata \
>   --old_traineddata tessdata/best/chi_sim.traineddata \
>   --train_listfile ~/tesstutorial/trainspecial/chi_sim.training_files.txt
> \
>   --max_iterations 400000
>
> As the command, when we iterate 400000 times, the char error is about 0.2%
> and the word error is about 4.2%.
> The error rate has almost started to oscillate and it can't go down. So we
> stopped training and exported the traineddata model.
>
> After testing the exported traineddata model, the accuracy is not
> satisfactory enough, which is lower than the model provided by the official
> website (tesseract github website).
>
> We hope that the training model recognition accuracy will be consistent
> with the official website. Then how can we continue to further improve the
> accuracy of the model?
>
> Does anyone know the details of the official website training language
> model, such as the num of iteration, the lowest char error and word error,
> the value of the learning_rate, and so on?
>
> If you know these information, please give some tips.
>
>
> Thank you.
>
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