void ap_sentence(sentence_type *s, Float score[], Float w[], Float dw,
Float sum_w[], size_t it, size_t changed[])
{
Float max_winner_score, max_score;
size_t best_i = sentence_scores(s, w, score, &max_winner_score, &max_score);
if (score[0] <= max_score) { /* update between parse[0] and parse[best_i] */
size_t j;
parse_type *correct = &s->parse[0], *winner = &s->parse[best_i];
if (winner->Pyx >= correct->Pyx)
return;
/* multiply update weight by importance of this pair */
assert(correct->Pyx > 0);
dw *= s->Px * fabs(correct->Pyx - winner->Pyx)/correct->Pyx;
/* subtract winner's feature counts */
for (j = 0; j < winner->nf; ++j)
ap_update1(winner->f[j], w, -dw, sum_w, it, changed);
for (j = 0; j < winner->nfc; ++j)
ap_update1(winner->fc[j].f, w, -dw*winner->fc[j].c, sum_w, it, changed);
/* add correct's feature counts */
for (j = 0; j < correct->nf; ++j)
ap_update1(correct->f[j], w, dw, sum_w, it, changed);
for (j = 0; j < correct->nfc; ++j)
ap_update1(correct->fc[j].f, w, dw*correct->fc[j].c, sum_w, it, changed);
}
} /* ap_sentence() */
void wap_sentence(sentence_type *s, Float w[],
Float dw, const size_type feat_class[], const Float class_dw[],
Float sum_w[], size_type it, size_type changed[])
{
Float best_correct_score, best_score;
int best_correct_i = 0, best_i = 0;
ap_sentence_scores(s, w, &best_correct_score, &best_correct_i, &best_score, &best_i);
if (best_correct_score <= best_score) {
/* update between parse[best_correct_i] and parse[best_i] */
size_type j;
parse_type *correct = &s->parse[best_correct_i];
parse_type *winner = &s->parse[best_i];
if (winner->Pyx >= correct->Pyx)
return;
/* multiply update weight by importance of this pair */
dw *= s->Px * fabs(correct->Pyx - winner->Pyx)/correct->Pyx;
/* subtract winner's feature counts */
for (j = 0; j < winner->nf; ++j) {
size_type f = winner->f[j];
ap_update1(f, w, -dw*class_dw[feat_class[f]], sum_w, it, changed);
}
for (j = 0; j < winner->nfc; ++j) {
size_type f = winner->fc[j].f;
ap_update1(f, w, -dw*winner->fc[j].c*class_dw[feat_class[f]],
sum_w, it, changed);
}
/* add correct's feature counts */
for (j = 0; j < correct->nf; ++j) {
size_type f = correct->f[j];
ap_update1(f, w, dw*class_dw[feat_class[f]], sum_w, it, changed);
}
for (j = 0; j < correct->nfc; ++j) {
size_type f = correct->fc[j].f;
ap_update1(f, w, dw*correct->fc[j].c*class_dw[feat_class[f]], sum_w, it, changed);
}
}
} /* wap_sentence() */
void ap_sentence(sentence_type *s, Float w[], Float dw, Float weightdecay,
Float sum_w[], size_type it, size_type changed[])
{
Float best_correct_score, best_score;
int best_i, best_correct_i;
if (weightdecay == 0)
ap_sentence_scores(s, w, &best_correct_score, &best_correct_i,
&best_score, &best_i);
else
ap_wd_sentence_scores(s, w, weightdecay, sum_w, it, changed,
&best_correct_score, &best_correct_i,
&best_score, &best_i);
if (best_correct_score <= best_score) {
/* update between parse[best_correct_i] and parse[best_i] */
size_type j;
parse_type *correct = &s->parse[best_correct_i];
parse_type *winner = &s->parse[best_i];
if (winner->Pyx >= correct->Pyx)
return;
/* multiply update weight by importance of this pair */
assert(correct->Pyx > 0);
dw *= s->Px * fabs(correct->Pyx - winner->Pyx)/correct->Pyx;
/* subtract winner's feature counts */
for (j = 0; j < winner->nf; ++j)
ap_update1(winner->f[j], w, -dw, sum_w, it, changed);
for (j = 0; j < winner->nfc; ++j)
ap_update1(winner->fc[j].f, w, -dw*winner->fc[j].c, sum_w, it, changed);
/* add correct's feature counts */
for (j = 0; j < correct->nf; ++j)
ap_update1(correct->f[j], w, dw, sum_w, it, changed);
for (j = 0; j < correct->nfc; ++j)
ap_update1(correct->fc[j].f, w, dw*correct->fc[j].c, sum_w, it, changed);
}
} /* ap_sentence() */
void wap_sentence(sentence_type *s, Float score[], Float w[],
Float dw, const size_t feat_class[], const Float class_dw[],
Float sum_w[], size_t it, size_t changed[])
{
Float max_winner_score, max_score;
size_t best_i = sentence_scores(s, w, score, &max_winner_score, &max_score);
if (score[0] <= max_score) { /* update between parse[0] and parse[best_i] */
size_t j;
parse_type *correct = &s->parse[0], *winner = &s->parse[best_i];
/* multiply update weight by importance of this pair */
dw *= s->Px * fabs(correct->Pyx - winner->Pyx);
/* subtract winner's feature counts */
for (j = 0; j < winner->nf; ++j) {
size_t f = winner->f[j];
ap_update1(f, w, -dw*class_dw[feat_class[f]], sum_w, it, changed);
}
for (j = 0; j < winner->nfc; ++j) {
size_t f = winner->fc[j].f;
ap_update1(f, w, -dw*winner->fc[j].c*class_dw[feat_class[f]],
sum_w, it, changed);
}
/* add correct's feature counts */
for (j = 0; j < correct->nf; ++j) {
size_t f = correct->f[j];
ap_update1(f, w, dw*class_dw[feat_class[f]], sum_w, it, changed);
}
for (j = 0; j < correct->nfc; ++j) {
size_t f = correct->fc[j].f;
ap_update1(f, w, dw*correct->fc[j].c*class_dw[feat_class[f]], sum_w, it, changed);
}
}
} /* wap_sentence() */