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LSTMTRAINING(1)						       LSTMTRAINING(1)

NAME
       lstmtraining - Training program for LSTM-based networks.

SYNOPSIS
       lstmtraining --continue_from train_output_dir/continue_from_lang.lstm
       --old_traineddata bestdata_dir/continue_from_lang.traineddata
       --traineddata train_output_dir/lang/lang.traineddata --max_iterations
       NNN --debug_interval 0|-1 --train_listfile
       train_output_dir/lang.training_files.txt	--model_output
       train_output_dir/newlstmmodel

DESCRIPTION
       lstmtraining(1) trains LSTM-based networks using	a list of lstmf	files
       and starter traineddata file as the main	input. Training	from scratch
       is not recommended to be	done by	users. Finetuning (example command
       shown in	synopsis above)	or replacing a layer options can be used
       instead.	Different options apply	to different types of training.	Read
       the [training
       documentation](https://tesseract-ocr.github.io/tessdoc/TrainingTesseract-4.00.html)
       for details.

OPTIONS
       '--debug_interval '
	   How often to	display	the alignment. (type:int default:0)

       '--net_mode '
	   Controls network behavior. (type:int	default:192)

       '--perfect_sample_delay '
	   How many imperfect samples between perfect ones. (type:int
	   default:0)

       '--max_image_MB '
	   Max memory to use for images. (type:int default:6000)

       '--append_index '
	   Index in continue_from Network at which to attach the new network
	   defined by net_spec (type:int default:-1)

       '--max_iterations '
	   If set, exit	after this many	iterations. A negative value is
	   interpreted as epochs, 0 means infinite iterations. (type:int
	   default:0)

       '--target_error_rate '
	   Final error rate in percent.	(type:double default:0.01)

       '--weight_range '
	   Range of initial random weights. (type:double default:0.1)

       '--learning_rate	'
	   Weight factor for new deltas. (type:double default:0.001)

       '--momentum '
	   Decay factor	for repeating deltas. (type:double default:0.5)

       '--adam_beta '
	   Decay factor	for repeating deltas. (type:double default:0.999)

       '--stop_training	'
	   Just	convert	the training model to a	runtime	model. (type:bool
	   default:false)

       '--convert_to_int '
	   Convert the recognition model to an integer model. (type:bool
	   default:false)

       '--sequential_training '
	   Use the training files sequentially instead of round-robin.
	   (type:bool default:false)

       '--debug_network	'
	   Get info on distribution of weight values (type:bool	default:false)

       '--randomly_rotate '
	   Train OSD and randomly turn training	samples	upside-down (type:bool
	   default:false)

       '--net_spec '
	   Network specification (type:string default:)

       '--continue_from	'
	   Existing model to extend (type:string default:)

       '--model_output '
	   Basename for	output models (type:string default:lstmtrain)

       '--train_listfile '
	   File	listing	training files in lstmf	training format. (type:string
	   default:)

       '--eval_listfile	'
	   File	listing	eval files in lstmf training format. (type:string
	   default:)

       '--traineddata '
	   Starter traineddata with combined Dawgs/Unicharset/Recoder for
	   language model (type:string default:)

       '--old_traineddata '
	   When	changing the character set, this specifies the traineddata
	   with	the old	character set that is to be replaced (type:string
	   default:)

HISTORY
       lstmtraining(1) was first made available	for tesseract4.00.00alpha.

RESOURCES
       Main web	site: https://github.com/tesseract-ocr Information on training
       tesseract LSTM:
       https://tesseract-ocr.github.io/tessdoc/TrainingTesseract-4.00.html

SEE ALSO
       tesseract(1)

COPYING
       Copyright (C) 2012 Google, Inc. Licensed	under the Apache License,
       Version 2.0

AUTHOR
       The Tesseract OCR engine	was written by Ray Smith and his research
       groups at Hewlett Packard (1985-1995) and Google	(2006-2018).

				  04/12/2025		       LSTMTRAINING(1)

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