commit 47d2ef69d3f94e68bf675967ce3140cbb6179279
author satok <satok@google.com> Tue Apr 12 20:22:10 2011 -0700
committer Android (Google) Code Review <android-gerrit@google.com> Tue Apr 12 20:22:10 2011 -0700
tree 9b05e0415618003b0d64cc479e6e89726f134336
parent 09df2a5bf4b15fdfc2e2033724f5cd926f94619d
parent dc5301e5902826b0e9a44fc3d45695526eaf66b3

Merge "Change the formula of the missing character."

native/src/defines.h

diff --git a/native/src/defines.h b/native/src/defines.h
index 9261207..ff195f4 100644
--- a/native/src/defines.h
+++ b/native/src/defines.h
@@ -138,7 +138,8 @@
 #define SUGGEST_WORDS_WITH_SPACE_PROXIMITY true
 
 // The following "rate"s are used as a multiplier before dividing by 100, so they are in percent.
-#define WORDS_WITH_MISSING_CHARACTER_DEMOTION_RATE 70
+#define WORDS_WITH_MISSING_CHARACTER_DEMOTION_RATE 90
+#define WORDS_WITH_MISSING_CHARACTER_DEMOTION_START_POS_10X 12
 #define WORDS_WITH_MISSING_SPACE_CHARACTER_DEMOTION_RATE 80
 #define WORDS_WITH_EXCESSIVE_CHARACTER_DEMOTION_RATE 75
 #define WORDS_WITH_EXCESSIVE_CHARACTER_OUT_OF_PROXIMITY_DEMOTION_RATE 75

native/src/unigram_dictionary.cpp

diff --git a/native/src/unigram_dictionary.cpp b/native/src/unigram_dictionary.cpp
index c188290..2ae2bca 100644
--- a/native/src/unigram_dictionary.cpp
+++ b/native/src/unigram_dictionary.cpp
@@ -518,9 +518,12 @@
     // TODO: Demote by edit distance
     int finalFreq = freq * matchWeight;
     if (skipPos >= 0) {
-        if (mInputLength >= 3) {
-            multiplyRate(WORDS_WITH_MISSING_CHARACTER_DEMOTION_RATE *
-                    (mInputLength - 2) / (mInputLength - 1), &finalFreq);
+        if (mInputLength >= 2) {
+            const int demotionRate = WORDS_WITH_MISSING_CHARACTER_DEMOTION_RATE
+                    * (10 * mInputLength - WORDS_WITH_MISSING_CHARACTER_DEMOTION_START_POS_10X)
+                    / (10 * mInputLength
+                            - WORDS_WITH_MISSING_CHARACTER_DEMOTION_START_POS_10X + 10);
+            multiplyRate(demotionRate, &finalFreq);
         } else {
             finalFreq = 0;
         }