I want to be able to recognise handwritten math numbers using images of the numbers , i was able to do create a ANN model for recognising simple decimal numbers , but i have no idea on how to recognise fractional number. What kind of ML model do i need to recognise fractional numbers (p/q forms). As i am relatively new to machine learning, i have no idea how to do it. Any study material will be appreciated.

  • $\begingroup$ After a weeks or so, if you do not think you get the answer you wanted, you may flag your question to request migration to Cross Validated stack exchange, which might be a better place to ask OCR/ANN related questions. $\endgroup$ – John L. Nov 15 '18 at 20:54

Usually one of the steps is "segmentation", where we separate the image into smaller images, one for each character/symbol. Thus the fraction "1/13" would have four character, "1", "/", "1", and "3". Then, you apply a neural network separately to each of those four smaller images.

See https://en.wikipedia.org/wiki/Optical_character_recognition for an introduction. OCR is covered in many standard sources. I suggest reading the literature on the subject to learn more about standard methods.

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  • $\begingroup$ I am not asking about linearly written expression like 2/3+5, i want some thing in this format goo.gl/images/MRyYtn $\endgroup$ – Arvind M. Nov 15 '18 at 6:49
  • $\begingroup$ @rov.er, everything I wrote still applies. You'll need to analyze the layout and do something useful with it. $\endgroup$ – D.W. Nov 15 '18 at 7:01
  • $\begingroup$ Sorry, but since i am new to ML I dint quite understand. Can you please elaborate in a little detail, how can i recognise a expression like (2 + (3/4) +1)/7 , i know how a single linear expression will be recognised, but how something like goo.gl/images/QQxVzD, $\endgroup$ – Arvind M. Nov 15 '18 at 7:16
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    $\begingroup$ See specifically the "Pre-processing" section of the article. $\endgroup$ – Aaron Brick Jan 2 '19 at 22:05

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