phonsobon/khmer-pronunciation-dictionary

Khmer Pronunciation Dictionary (combined)

39,110 Khmer words with their pronunciation respelling (កញ្ជ្រក់ → កញ់-ជ្រក់), for training grapheme-to-phoneme (G2P) models. Built for the Khmer spell checker (PhonSobon/Khmer-Spelling-Check).

Sources

Both sources are extractions of the Khmer Dictionary 2022, Royal Academy of Cambodia (RAC):

Source	Rows	Format
seanghay/khmer-dictionary-44k (pro column)	44,706	[កញ់-ច្រក់]
seanghay/khmerpronounce (lexicon.tsv)	41,816	កញ់ ជ្រក់

They agree on 98% of the words. Each has extraction errors the other does not have, e.g. 44k វជិរហត្ថ = វៈ-ជិ-រៈ-ប៉ា-ណី (copied from a neighbouring entry), khmerpronounce មុត្តាស័យ = មុត-ដា-សៃ (ត read as ដ). This dataset combines them and settles the differences.

How each word was decided (source column)

source	Words	Rule
both	36,445	both sources identical
both (+alternatives)	274	share a pronunciation; the other listed ones are kept as alternatives
44k only / kp only	1,204 / 497	only one source has the word
kp (judge) / 44k (judge)	547 / 103	sources disagree: a judge G2P model chose (see below)
reviewed: ...	39	judge unsure: decided by review (44k, kp, or both-* = both kept, first one preferred)
manual	1	checked by a person (កញ្ជ្រក់ → កញ់-ជ្រក់)

Judge model. A Transformer G2P trained only on the 36,445 words where both sources agree (81.6% phone-key accuracy on unseen agreed words) scores both disputed pronunciations; the more likely one wins. When the two scores are within 0.05 the word goes to review. On 10 hand-checked disputes the judge agreed 9 times; the one miss was in the "unsure" group. The judge picked khmerpronounce 5 times more often than 44k.

Cleaning. Unicode normalization; khmerpronounce rows removed: 2,819 duplicates, 17 broken or cut-short pronunciations (រាំងថ្ងៃខែ → ខែ).

Columns

Column	Content
word	Khmer word (normalized)
pro	main pronunciation, syllables joined by -
alternatives	all accepted pronunciations, main first
source	how it was decided (table above)
status	ok, judge, checked, reviewed by ...

data/review.csv lists all 689 disputed words with both pronunciations, the judge's choice and confidence, and the decision. The 39 reviewed by Claude (to confirm) decisions and the 650 judge decisions should be confirmed by a native speaker: edit the decision column and rebuild.

Use

from datasets import load_dataset
ds = load_dataset("phonsobon/khmer-pronunciation-dictionary", split="train")
ds[0]   # {'word': 'ក', 'pro': 'ក', 'alternatives': ['ក'], 'source': 'both', 'status': 'ok'}

License

The pronunciations come from the RAC Khmer Dictionary 2022, which seanghay/khmer-dictionary-44k publishes for research purposes only, not for commercial use. The same applies here.