Bengali.AI Handwritten Grapheme Classification

Bengali.AI Handwritten Grapheme Classification

Classify the components of handwritten Bengali. Bengali is the 5th most spoken language in the world with hundreds of million of speakers. It’s the official language of Bangladesh and the second most spoken language in India. Considering its reach, there’s significant business and educational interest in developing AI that can optically recognize images of the language handwritten. This challenge hopes to improve on approaches to Bengali recognition.

Optical character recognition is particularly challenging for Bengali. While Bengali has 49 letters (to be more specific 11 vowels and 38 consonants) in its alphabet, there are also 18 potential diacritics, or accents. This means that there are many more graphemes, or the smallest units in a written language. The added complexity results in ~13,000 different grapheme variations (compared to English’s 250 graphemic units).

Bangladesh-based non-profit Bengali.AI is focused on helping to solve this problem. They build and release crowdsourced, metadata-rich datasets and open source them through research competitions. Through this work, Bengali.AI hopes to democratize and accelerate research in Bengali language technologies and to promote machine learning education.

For this competition, you’re given the image of a handwritten Bengali grapheme and are challenged to separately classify three constituent elements in the image: grapheme root, vowel diacritics, and consonant diacritics.

By participating in the competition, you’ll hopefully accelerate Bengali handwritten optical character recognition research and help enable the digitalization of educational resources. Moreover, the methods introduced in the competition will also empower cousin languages in the Indian subcontinent.


  • 1st Place – $5,000
  • 2nd Place – $2,000
  • 3rd Place – $1,000

Special prizes:

  • $2,000 to the highest performing student team from Bangladesh. A team would be considered a Bangladeshi student team if majority members (e.g. at least 3 out of a 5 member team) are Bangladeshi citizens and students enrolled in a university degree. In the case of an even number of members, half of them have to be from Bangladesh.

Deadline:- 09-03-2020

Take this challenge