Grapheme Parser for indic languages
pip install indicparser- initializing the parser
from indicparser import graphemeParser
gp=graphemeParser("bangla")- extracting graphemes
text=" āĻļāĻžāĻāĻŋāĻāĻžāĻĒ āĻŽāĻžāĻ°"
graphemes=gp.process(text)
print("Graphemes:",graphemes)Graphemes: [' ', ' ', 'āĻļāĻž', 'āĻāĻŋ', 'āĻāĻž', 'āĻĒ', ' ', ' ', ' ', 'āĻŽāĻž', 'āĻ°']
- extracting graphemes but merging spaces and clearing initial and ending space
graphemes=gp.process(text,merge_spaces=True)
print("Graphemes (space corrected):",graphemes)Graphemes (space corrected): ['āĻļāĻž', 'āĻāĻŋ', 'āĻāĻž', 'āĻĒ', ' ', 'āĻŽāĻž', 'āĻ°']
- treatment of numbers and puntucation and english is also available by default
text="āĻāĻāĻžāĻāĻŋ 2441139 ? āĻ¨āĻž āĻāĻžāĻ wrong number"
graphemes=gp.process(text,merge_spaces=True)
print("Graphemes:",graphemes)Graphemes: ['āĻ', 'āĻāĻž', 'āĻāĻŋ', ' ', '2', '4', '4', '1', '1', '3', '9', ' ', '?', ' ', 'āĻ¨āĻž', ' ', 'āĻāĻž', 'āĻ', ' ', 'w', 'r', 'o', 'n', 'g', ' ', 'n', 'u', 'm', 'b', 'e', 'r']
- available languages
from indicparser import languages
languages.keys()dict_keys(['bangla', 'malyalam', 'tamil', 'gujrati', 'panjabi', 'odiya', 'hindi','nagri'])
- For best results use normalized text before parsing
- An example bangla unicode normalizer can be found here
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Authors: Bengali.AI
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Cite our work
@inproceedings{ansary-etal-2024-unicode-normalization,
title = "{U}nicode Normalization and Grapheme Parsing of {I}ndic Languages",
author = "Ansary, Nazmuddoha and
Adib, Quazi Adibur Rahman and
Reasat, Tahsin and
Sushmit, Asif Shahriyar and
Humayun, Ahmed Imtiaz and
Mehnaz, Sazia and
Fatema, Kanij and
Rashid, Mohammad Mamun Or and
Sadeque, Farig",
editor = "Calzolari, Nicoletta and
Kan, Min-Yen and
Hoste, Veronique and
Lenci, Alessandro and
Sakti, Sakriani and
Xue, Nianwen",
booktitle = "Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024)",
month = may,
year = "2024",
address = "Torino, Italia",
publisher = "ELRA and ICCL",
url = "https://aclanthology.org/2024.lrec-main.1479",
pages = "17019--17030",
abstract = "Writing systems of Indic languages have orthographic syllables, also known as complex graphemes, as unique horizontal units. A prominent feature of these languages is these complex grapheme units that comprise consonants/consonant conjuncts, vowel diacritics, and consonant diacritics, which, together make a unique Language. Unicode-based writing schemes of these languages often disregard this feature of these languages and encode words as linear sequences of Unicode characters using an intricate scheme of connector characters and font interpreters. Due to this way of using a few dozen Unicode glyphs to write thousands of different unique glyphs (complex graphemes), there are serious ambiguities that lead to malformed words. In this paper, we are proposing two libraries: i) a normalizer for normalizing inconsistencies caused by a Unicode-based encoding scheme for Indic languages and ii) a grapheme parser for Abugida text. It deconstructs words into visually distinct orthographic syllables or complex graphemes and their constituents. Our proposed normalizer is a more efficient and effective tool than the previously used IndicNLP normalizer. Moreover, our parser and normalizer are also suitable tools for general Abugida text processing as they performed well in our robust word-based and NLP experiments. We report the pipeline for the scripts of 7 languages in this work and develop the framework for the integration of more scripts.",
}
