You can add  *training >> data/lang.log &* to the end of your training 
script (shell) to get a log saved inside your data folder. You also add 
*DEBUG_INTERVAL=-1 
training >> data/lang.log &. *This one flashes more detailed information on 
the console; and saves a short log inside the data folder. If you want to 
save everything displayed in the console saved to log file, you can check 
out methods listed here: 
https://unix.stackexchange.com/questions/200637/save-all-the-terminal-output-to-a-file


On Tuesday, October 24, 2023 at 3:45:23 PM UTC+3 [email protected] wrote:

> I have made a first try for a fine tuning, the script run a second and end 
> without any error message. Where can I find a log file ? 
>
> Le lun. 23 oct. 2023 à 14:01, Keith Smith <[email protected]> a 
> écrit :
>
>> Rene, the name “foo” is simply an example (or fictitious) font or 
>> language name.  When training a new language or font, you should replace 
>> “foo” with the name of your language or font.  The standard is to choose 3 
>> letters, but that is not required.  In fact, I have been training a font 
>> named “micr_e13b” and it is working technically for me (though the accuracy 
>> isn’t good enough yet).  Note the underscore character between sections of 
>> the name.
>>
>>  
>>
>> Internal
>>
>> *From: *[email protected] <[email protected]> on 
>> behalf of René JM Clais <[email protected]>
>> *Date: *Sunday, October 22, 2023 at 12:41 PM
>> *To: *[email protected] <[email protected]>
>> *Subject: *[EXTERNAL] Re: [tesseract-ocr] Lessons, best practices, 
>> recommendations, strategies, hacks
>>
>> *CAUTION EXTERNAL EMAIL *
>> *DO NOT open attachments or click on links from unknown senders or 
>> unexpected emails.*
>>
>>  
>>
>> Hi Keith,
>>
>> The foo.traindedata is not existing but do you mean : the trainedata I 
>> want to train   ex:  hye.traineddata  ?
>>
>> In my case I should add a new character in the hye.traineddata
>>
>> It seems that I can do this using the option 2 !
>>
>> But how ?  Which command  should I use to execute this function and what 
>> does mean this process ?
>>
>>  
>>
>> Thank you for your help
>>
>> Regards
>>
>> René
>>
>>  
>>
>> Le sam. 21 oct. 2023 à 17:18, Keith Smith <[email protected]> a écrit :
>>
>> Thank you Des for your help in this community.  It is greatly appreciated!
>>
>> As one who is struggling, may I make a suggestion.
>>
>> I have started a google doc here 
>> <https://urldefense.com/v3/__https://docs.google.com/document/d/1Vz6y4LcqczAAE2yKc_xYecy1eChjHZbsxb13_7ntUh0/edit?usp=sharing__;!!MjXRb4uW6x5k!HFOAD-quUbb2dHADKsKiyk_BK3xW49ZAh87HZ3mPU9myi2Zk2t-bdP3ptvhcsV64KhX43EgYbPFZJ5M8Lr1zVHA$>
>>  
>> with a suggested format for a tutorial which would be very helpful to me 
>> and I think to others. It is editable by anyone with the link.
>>
>> I'm glad to put in any work myself, but my guess is that there are things 
>> in the doc that could be filled without much effort by you or others.
>>
>> If this is true, once the doc is filled out, the contents of the google 
>> doc could be submitted as a PR to the tesstrain repo.
>>
>> Again, just a suggestion that I hope would be helpful to all.
>>
>>
>>
>> Thanks,
>>
>> Keith
>>
>>  
>>
>> On Sat, Oct 21, 2023 at 8:28 AM Des Bw <[email protected]> wrote:
>>
>> There is no exhaustive user manual for training tesseract. We all start 
>> in the darkness; and accumulate bits of information in different places to 
>> learn the ins and outs of tesseract. 
>>
>>  
>>
>> It would be great if we can collectively write a better manual. Up until 
>> then, we can drop /collect our observations, best  practices, hacks and 
>> lessons we accumulated in our adventure with tesseract.  
>>
>>  
>>
>> I will start with some of my observations. I collect them by reading in 
>> between the lines: from my own failed experiments: 
>>
>> 1. Training from scratch is very difficult because tesseract requires 
>> extensive data set. It looks like it requires over 300,000 test lines 
>> (around 26mb text file).
>>
>> https://github.com/tesseract-ocr/tesseract/issues/3909 
>> <https://urldefense.com/v3/__https://github.com/tesseract-ocr/tesseract/issues/3909__;!!MjXRb4uW6x5k!HFOAD-quUbb2dHADKsKiyk_BK3xW49ZAh87HZ3mPU9myi2Zk2t-bdP3ptvhcsV64KhX43EgYbPFZJ5M8Yk4Xcmo$>
>>
>>  
>>
>>  Multiple that with the fonts you want to train, the data grows 
>> exponentially. That requires very powerful computers running for weeks and 
>> months. 
>>
>> So, for the regular users, training from a network layer, or fine tuning 
>> are the most plausible options. 
>>
>>  
>>
>> 2. Best practice: make your text lines not too long. The recommended 
>> number of works in a line is 10-12. Again from the above link. 
>>
>>  
>>
>> ( ...to be continued)
>>
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>> <https://urldefense.com/v3/__https://groups.google.com/d/msgid/tesseract-ocr/bf0cd568-9b5b-4e42-be6e-6225ed6a3892n*40googlegroups.com?utm_medium=email&utm_source=footer__;JQ!!MjXRb4uW6x5k!HFOAD-quUbb2dHADKsKiyk_BK3xW49ZAh87HZ3mPU9myi2Zk2t-bdP3ptvhcsV64KhX43EgYbPFZJ5M8KHJKCVc$>
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>> <https://urldefense.com/v3/__https://groups.google.com/d/msgid/tesseract-ocr/CAPJAo_rtwFJ247UCtLgggB_WTs0*3DUajag0_M29Fe*2B8zCy0OZXw*40mail.gmail.com?utm_medium=email&utm_source=footer__;JSUl!!MjXRb4uW6x5k!HFOAD-quUbb2dHADKsKiyk_BK3xW49ZAh87HZ3mPU9myi2Zk2t-bdP3ptvhcsV64KhX43EgYbPFZJ5M8U3w3mDk$>
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