Doubt on "--eval_listfile"

[Fanatico]

Platform: MAC OS X

Tesseract: 4.0.0-beta.1-69-g10f4

Wen I execute a command like:

SCROLLVIEW_PATH=~/projects/tesseract/java \

  ~/projects/tesseract/training/lstmtraining \

    --debug_interval 100 \

    --continue_from ~/projects/ocr/training/kortrain/kor_from_full/kor.lstm \

    --traineddata ~/projects/ocr/training/kortrain/new_train/kor/kor.traineddata \

    --append_index 5 \

    --net_spec '[Lfx256 O1c111]' \

    --model_output ~/projects/ocr/training/kortrain/kor_from_full/base \

    --train_listfile ~/projects/ocr/training/kortrain/new_train/kor.training_files.txt \

    --eval_listfile ~/projects/ocr/training/kortrain/eval/kor.training_files.txt \

    --target_error_rate 1 &>~/projects/ocr/training/kortrain/kor_from_full/basetrain.log

I have "--train_listfile" that tells the location of my training files for each font and I have "--eval_listfile" that I suppose is the location for the training files used to test the result of the training.

So my doubt is:

1 - Why I'm training with the fonts "A", "B" and "C" but testing with the fonts "D", "E" and "F"?

2 - And if I need to test using the same fonts, then why do I need to pass 2 times the same file?

[ShreeDevi Kumar]

To make sure that the model is not overfitted to training data, your eval set should be different.

You can use a different text file, different fonts from the training set to check that the model performs well on text and fonts it has not seen earlier.

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[Fanatico]

I see, thanks for the reply.

[Fanatico]

I just thought, but can I pass only the ".training_text" file as a param ?
like --training_text

[Fanatico]

wen I asked about passing the ".training_text" as a param, I meant in the creation of the training data "training/tesstrain.sh"

[ShreeDevi Kumar]

Yes, and you can use different text files for training and eval.

ShreeDevi
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