GPOpen - Open-source grapheme-phoneme correspondence toolbox

This toolbox accepts both word and non-word/pseudoword inputs, for simplicity, all inputs are refered to as words.

Functions

GPparser.m

This script uses the known phonology (phonlist) of a list of words (stimlist) to parse the words into graphemes and their corresponding phonemes. fix is a logical vector that will be true if the model detects an error parsing the word.

[graphemes,phonemes,fix] = GPparser(stimlist,phonlist);

GPentropy.m

This script uses the graphemes and phonemes calculated by GPparser to calculate the entropy, grapheme probabilities and surprisal for the grapheme-to-phoneme conversion. Weighting is an optional input for weighting by word frequency ('freq'), position in the word ('pos'), or both factors ('freqpos').

[entropy,gprob,surprisal] = GPentropy(graphemes,phonemes,weighting);

PGentropy.m

This script uses the graphemes and phonemes calculated by GPparser to calculate the entropy, phoneme probabilities and surprisal for the phoneme-to-grapheme conversion. Weighting is an optional input for weighting by word frequency ('freq'), position in the word ('pos'), or both factors ('freqpos').

[entropy,pprob,surprisal] = PGentropy(phonemes,graphemes,weighting);

NGparser.m

This script attempts to parse words into graphemes without knowing their phonology. This uses the probabilities of occurence of multi-letter graphemes from a corpus of 33k words.

Data Files

GraphemePhoneme.csv

List of legal grapheme-phoneme correspondences used by the GPparser model

GP_prob.mat

Precalculated grapheme-phoneme correspondence probabilities from a corpus of 33k words

GG_prob.mat

Precalculated probabilities of multi-letter graphemes from a corpus of 33k words