From 54b399a04fff283dec5299fc9f1d66985456754d Mon Sep 17 00:00:00 2001
From: Peng Wu <alexepico@gmail.com>
Date: Mon, 25 Apr 2011 15:54:42 +0800
Subject: [PATCH] define k mixture model bi-gram

---
 utils/training/k_mixture_model.h | 41 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/utils/training/k_mixture_model.h b/utils/training/k_mixture_model.h
index c482a2c..0b19af6 100644
--- a/utils/training/k_mixture_model.h
+++ b/utils/training/k_mixture_model.h
@@ -24,6 +24,7 @@
 #define K_MIXTURE_MODEL
 
 #include "novel_types.h"
+#include "flexible_ngram.h"
 
 namespace pinyin{
 
@@ -104,6 +105,46 @@ static inline parameter_t compute_Pr_G_2_with_count(corpus_count_t k,
     return compute_Pr_G_2(k, alpha, B);
 }
 
+typedef struct{
+    /* the total number of instances of all words. */
+    guint32 m_WC;
+    /* the total number of documents. */
+    guint32 m_N;
+} KMixtureModelMagicHeader;
+
+typedef struct{
+    /* the total number of instances of word W1. */
+    guint32 m_WC;
+} KMixtureModelArrayHeader;
+
+typedef struct{
+    /* the total number of all W1,W2 word pair. */
+    guint32 m_WC;
+
+    /* the total number of instances of the word or phrases.
+       (two word phrase) */
+    guint32 m_T; /* alias of m_WC, always the same. */
+    /* n_r: the number of documents having exactly r occurrences. */
+    guint32 m_n_0;
+    guint32 m_n_1;
+
+    /* maximum instances of the word or phrase (two word phrase)
+       in previous documents last seen. */
+    guint32 m_Mr;
+} KMixtureModelArrayItem;
+
+typedef FlexibleBigram<KMixtureModelMagicHeader,
+                       KMixtureModelArrayHeader,
+                       KMixtureModelArrayItem>
+KMixtureModelBigram;
+
+typedef FlexibleSingleGram<KMixtureModelArrayHeader,
+                           KMixtureModelArrayItem>
+KMixtureModelSingleGram;
+
+typedef KMixtureModelSingleGram::ArrayItemWithToken
+KMixtureModelArrayItemWithToken;
+
 };
 
 
-- 
2.7.4