diff options
Diffstat (limited to 'native/jni/src')
| -rw-r--r-- | native/jni/src/bigram_dictionary.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/native/jni/src/bigram_dictionary.cpp b/native/jni/src/bigram_dictionary.cpp index 8d0c8597f..eb4bf8d1a 100644 --- a/native/jni/src/bigram_dictionary.cpp +++ b/native/jni/src/bigram_dictionary.cpp @@ -126,6 +126,11 @@ int BigramDictionary::getBigrams(const int32_t *prevWord, int prevWordLength, in // codesSize == 0 means we are trying to find bigram predictions. if (codesSize < 1 || checkFirstCharacter(bigramBuffer)) { const int bigramFreq = UnigramDictionary::MASK_ATTRIBUTE_FREQUENCY & bigramFlags; + // Due to space constraints, the frequency for bigrams is approximate - the lower the + // unigram frequency, the worse the precision. The theoritical maximum error in + // resulting frequency is 8 - although in the practice it's never bigger than 3 or 4 + // in very bad cases. This means that sometimes, we'll see some bigrams interverted + // here, but it can't get too bad. const int frequency = BinaryFormat::computeFrequencyForBigram(unigramFreq, bigramFreq); if (addWordBigram(bigramBuffer, length, frequency)) { |