ngram_access.c

単語列・クラス列の N-gram 確率を求める. [詳細]

#include <sent/stddefs.h>
#include <sent/ngram2.h>

ngram_access.cのインクルード依存関係図

ソースコードを見る。

関数
NNID	search_bigram (NGRAM_INFO *ndata, WORD_ID w_l, WORD_ID w_r)
static NNID	search_trigram_v3 (NGRAM_INFO *ndata, NNID n2, WORD_ID wkey)
static NNID	search_trigram_v4 (NGRAM_INFO *ndata, NNID n2, WORD_ID wkey)
LOGPROB	uni_prob (NGRAM_INFO *ndata, WORD_ID w)
LOGPROB	bi_prob_lr (NGRAM_INFO *ndata, WORD_ID w1, WORD_ID w2)
LOGPROB	bi_prob_rl (NGRAM_INFO *ndata, WORD_ID w1, WORD_ID w2)
LOGPROB	tri_prob_rl (NGRAM_INFO *ndata, WORD_ID w1, WORD_ID w2, WORD_ID w3)

---

説明

単語列・クラス列の N-gram 確率を求める.

作者:

Akinobu LEE

日付:

Wed Feb 16 07:46:18 2005

Revision

1.2

ngram_access.c で定義されています。

---

関数

NNID search_bigram (  NGRAM_INFO *  ndata, WORD_ID  w_l, WORD_ID  w_r )

Search for 2-gram tuple (w_l, w_r) in the 2-gram part of N-gram. 引数: ndata  [in] word/class N-gram w_l  [in] left word/class ID in N-gram w_r  [in] right word/class ID in N-gram 戻り値: corresponding index to the 2-gram data part if found, or NNID_INVALID if the tuple does not exist in 2-gram. ngram_access.c の 39 行で定義されています。 参照元 add_bigram_rl(), bi_prob_lr(), bi_prob_rl(), set_trigram(), と tri_prob_rl().

static NNID search_trigram_v3 (  NGRAM_INFO *  ndata, NNID  n2, WORD_ID  wkey )  [static]

Search for a reverse 3-gram tuple (wkey, w1, w2), where the context 2-gram tuple (w1, w2) should exist on 2-gram data part at n2. (for v3 struture format) 引数: ndata  [in] word/class N-gram n2  [in] 2-gram data part where context 2-gram data exists. wkey  [in] left word/class ID in N-gram 戻り値: corresponding index to the 3-gram data part if found, or NNID_INVALID if the 3-gram does not exist. ngram_access.c の 77 行で定義されています。 参照元 tri_prob_rl().

static NNID search_trigram_v4 (  NGRAM_INFO *  ndata, NNID  n2, WORD_ID  wkey )  [static]

Search for a reverse 3-gram tuple (wkey, w1, w2), where the context 2-gram tuple (w1, w2) should exist on 2-gram data part at n2. (for v4 struture format) 引数: ndata  [in] word/class N-gram n2  [in] 2-gram data part where context 2-gram data exists. wkey  [in] left word/class ID in N-gram 戻り値: corresponding index to the 3-gram data part if found, or NNID_INVALID if the 3-gram does not exist. ngram_access.c の 115 行で定義されています。 参照元 tri_prob_rl().

LOGPROB uni_prob (  NGRAM_INFO *  ndata, WORD_ID  w )

Get 1-gram probability of in log10. 引数: ndata  [in] word/class N-gram w  [in] word/class ID in N-gram 戻り値: log10 probability . ngram_access.c の 154 行で定義されています。 参照元 build_wchmm2(), get_nbest_uniprob(), max_successor_prob(), と pick_backtrellis_words().

LOGPROB bi_prob_lr (  NGRAM_INFO *  ndata, WORD_ID  w1, WORD_ID  w2 )

Get LR 2-gram probability of word/class sequence in log10 引数: ndata  [in] word/class N-gram w1  [in] left word/class ID in N-gram w2  [in] right word/class ID in N-gram (to compute probability) 戻り値: log10 probability . ngram_access.c の 175 行で定義されています。 参照元 calc_successor_prob(), max_successor_prob(), と max_successor_prob_iw().

LOGPROB bi_prob_rl (  NGRAM_INFO *  ndata, WORD_ID  w1, WORD_ID  w2 )

Get RL 2-gram probability of word/class sequence in log10. 引数: ndata  [in] word/class N-gram w1  [in] left word/class ID in N-gram (to compute probability) w2  [in] right word/class ID in N-gram 戻り値: log10 probability . ngram_access.c の 206 行で定義されています。 参照元 pick_backtrellis_words(), と tri_prob_rl().

LOGPROB tri_prob_rl (  NGRAM_INFO *  ndata, WORD_ID  w1, WORD_ID  w2, WORD_ID  w3 )

Get RL 3-gram probability of word/class sequence in log10. 引数: ndata  [in] word/class N-gram w1  [in] left word/class ID in N-gram (to compute probability) w2  [in] middle word/class ID in N-gram w3  [in] right word/class ID in N-gram 戻り値: log10 probability . ngram_access.c の 239 行で定義されています。 参照元 pick_backtrellis_words().

---