diff options
Diffstat (limited to 'java/src/com/android/inputmethod')
| -rw-r--r-- | java/src/com/android/inputmethod/latin/makedict/BinaryDictInputOutput.java | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/java/src/com/android/inputmethod/latin/makedict/BinaryDictInputOutput.java b/java/src/com/android/inputmethod/latin/makedict/BinaryDictInputOutput.java index 273ee329d..7f042335a 100644 --- a/java/src/com/android/inputmethod/latin/makedict/BinaryDictInputOutput.java +++ b/java/src/com/android/inputmethod/latin/makedict/BinaryDictInputOutput.java @@ -783,10 +783,10 @@ public class BinaryDictInputOutput { // their lower bound and exclude their higher bound so we need to have the first step // start at exactly 1 unit higher than floor(unigramFreq + half a step). // Note : to reconstruct the score, the dictionary reader will need to divide - // MAX_TERMINAL_FREQUENCY - unigramFreq by 16.5 likewise, and add - // (discretizedFrequency + 0.5) times this value to get the median value of the step, - // which is the best approximation. This is how we get the most precise result with - // only four bits. + // MAX_TERMINAL_FREQUENCY - unigramFreq by 16.5 likewise to get the value of the step, + // and add (discretizedFrequency + 0.5 + 0.5) times this value to get the best + // approximation. (0.5 to get the first step start, and 0.5 to get the middle of the + // step pointed by the discretized frequency. final float stepSize = (MAX_TERMINAL_FREQUENCY - unigramFrequency) / (1.5f + MAX_BIGRAM_FREQUENCY); final float firstStepStart = 1 + unigramFrequency + (stepSize / 2.0f); |