Check your netspec. Does it meet the required vgsl specs. See wiki for
details and netspec used for various languages.

On Fri, Oct 18, 2019, 15:07 Shubham Gupta <[email protected]> wrote:

> Hi All
>
> I am training Tesseract for Perso-Arabic languages using my custom
> dataset. I get *Segmentation fault-core dumped* error and training gets
> stopped. Net-spec used: net_spec '[1,0,0,1 Ct5,5,16 Ct3,3,8 Mp3,3 Lfys64
> Lfx128 Lbx64 Lby64 Lrx128 Lfx128 O1c105]'.Attaching the terminal error
> output below:
>
>
> Thread 1 "lstmtraining" received signal SIGSEGV, Segmentation fault.
> tesseract::Logistic (x=-nan(0x8000000000000)) at functions.h:90
> 90  double l0 = LogisticTable[index];
> (gdb) bt
> #0  tesseract::Logistic (x=-nan(0x8000000000000)) at functions.h:90
> #1  tesseract::FFunc::operator() (this=<synthetic pointer>,
>     x=-nan(0x8000000000000)) at functions.h:98
> #2  tesseract::FuncInplace<tesseract::FFunc> (inout=<optimized out>,
>     n=<optimized out>) at functions.h:163
> #3  tesseract::LSTM::Forward () at lstm.cpp:364
> #4  0x00007ffff625d30c in GOMP_parallel_sections ()
>    from /usr/lib/x86_64-linux-gnu/libgomp.so.1
> #5  0x00007ffff7a3ccd6 in tesseract::LSTM::Forward (this=0x55555f713cd0,
>     debug=<optimized out>, input=..., input_transpose=<optimized out>,
>     scratch=0x7fffffffbf58, output=0x555562b56c00) at lstm.cpp:322
> #6  0x00007ffff7a543eb in tesseract::Parallel::Forward
> (this=0x555556504490,
>     debug=false, input=..., input_transpose=<optimized out>,
>     scratch=0x7fffffffbf58, output=0x555562b61460) at parallel.cpp:93
> #7  0x00007ffff7a60d01 in tesseract::Reversed::Forward
> (this=0x55556030af00,
>     debug=<optimized out>, input=..., input_transpose=<optimized out>,
>     scratch=0x7fffffffbf58, output=0x55555f715060) at reversed.cpp:60
> #8  0x00007ffff7a6293f in tesseract::Series::Forward (this=0x555560454110,
>     debug=<optimized out>, input=..., input_transpose=<optimized out>,
>     scratch=0x7fffffffbf58, output=0x7fffffffad80) at series.cpp:119
> #9  0x00007ffff7a410ab in tesseract::LSTMRecognizer::RecognizeLine (
>     this=this@entry=0x7fffffffbc18, image_data=..., invert=<optimized
> out>,
>     debug=debug@entry=false, re_invert=<optimized out>,
> ---Type <return> to continue, or q <return> to quit---
>
>
> Any help to solve this shall be highly appreciated.
>
> Thanks
> Shubham
>
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