Can't run lstm training from tesseract 4.0

[KevinZhuYF]

I'm trying to run this demo with tesseract 4.0 lstm training :

mkdir -p ~/tesstutorial/engoutput
training/lstmtraining --debug_interval 100
--traineddata ~/tesstutorial/engtrain/eng/eng.traineddata
--net_spec '[1,36,0,1 Ct3,3,16 Mp3,3 Lfys48 Lfx96 Lrx96 Lfx256 O1c111]'
--model_output ~/tesstutorial/engoutput/base --learning_rate 20e-4
--train_listfile ~/tesstutorial/engtrain/eng.training_files.txt
--eval_listfile /tesstutorial/engeval/eng.training_files.txt
--max_iterations 5000 &>/tesstutorial/engoutput/basetrain.log

and system returns me a message as this:
Segmentation fault (core dumped)

When I checked the log file which is generated by this process, I got this:

mgr_.Init(traineddata_path.c_str()):Error:Assert failed:in file ../lstm/lstmtrainer.h, line 110

What should I do to make it work?

---

Environment

• Tesseract Version: <4.0>
• Commit Number:
• Platform: <Ubuntu 16.04>

Current Behavior:

Expected Behavior:

Suggested Fix:

[Shreeshrii]

Ray is currently updating the repo with new code. You can try a commit from about a week back and check.

[Shreeshrii]

The following example shows the command line for training from scratch. Try it with the default training data created with the command-lines above.

Did you create the required traineddata by

training/tesstrain.sh --fonts_dir /usr/share/fonts --lang eng --linedata_only \
  --noextract_font_properties --langdata_dir ../langdata \
  --tessdata_dir ./tessdata --output_dir ~/tesstutorial/engtrain

[amitdo]

@KevinZhuYF, please respond to @Shreeshrii's question.

[Shreeshrii]

mgr_.Init(traineddata_path.c_str()):Error:Assert failed:in file ../lstm/lstmtrainer.h, line 110

This error is caused by a missing traineddata file given in the training command. There is another similar issue - #1075

It will be nice to have a more user-friendly message.

This issue can be closed and a link added to the other one ( more details in it)