/**
* Scores the given N-gram using the given language model.
*
* args:
* wid - the IDs of the sequence of words in the n-gram
* nwd - the number of words in the n-gram
* lm - the language model to use
*
* return: the language model score of the given sequence of words
*/
int
score_ngram(s3lmwid32_t * wid, int nwd, lm_t * lm)
{
int32 score;
score = 0;
if (nwd == 3) {
/* The last argument is a hack: the information there - the dict
* ID - is never used if LM classes are not used, and classes
* are not used in this code. Therefore, the last argument here
* is a nop.
*/
score = lm_tg_score(lm, wid[0], wid[1], wid[2], 0);
}
else if (nwd == 2) {
/* Ditto.
*/
score = lm_bg_score(lm, wid[0], wid[1], 0);
}
else if (nwd == 1) {
/* Ditto.
*/
score = lm_ug_score(lm, wid[0], 0);
}
else {
printf("%d grams not supported\n", nwd);
}
return score;
}
/**
* Scores the given N-gram using the given language model.
*
* args:
* wid - the IDs of the sequence of words in the n-gram
* nwd - the number of words in the n-gram
* lm - the language model to use
*
* return: the language model score of the given sequence of words
*/
int score_ngram(s3lmwid_t *wid, int nwd, lm_t *lm)
{
int32 score, tgscr;
score = 0;
if (nwd == 3) {
score = lm_tg_score(lm, wid[0], wid[1], wid[2]);
} else if (nwd == 2) {
score = lm_bg_score(lm, wid[0], wid[1]);
} else if (nwd == 1) {
score = lm_ug_score(lm, wid[0]);
} else {
printf("%d grams not supported\n", nwd);
}
return score;
}