diff --git a/native/src/correction.cpp b/native/src/correction.cpp
index d7d05edc25f5c50cbb04dfe9b4d7bb9e86858398..2458bca86aaef89a0d87714130b7fa51e1bf1260 100644
--- a/native/src/correction.cpp
+++ b/native/src/correction.cpp
@@ -903,100 +903,6 @@ int Correction::RankingAlgorithm::calcFreqForSplitTwoWords(
return totalFreq;
}
-/* static */
-int Correction::RankingAlgorithm::calcFreqForSplitTwoWordsOld(
- const int firstFreq, const int secondFreq, const Correction* correction,
- const unsigned short *word) {
- const int spaceProximityPos = correction->mSpaceProximityPos;
- const int missingSpacePos = correction->mMissingSpacePos;
- if (DEBUG_DICT) {
- int inputCount = 0;
- if (spaceProximityPos >= 0) ++inputCount;
- if (missingSpacePos >= 0) ++inputCount;
- assert(inputCount <= 1);
- }
- const bool isSpaceProximity = spaceProximityPos >= 0;
- const int inputLength = correction->mInputLength;
- const int firstWordLength = isSpaceProximity ? spaceProximityPos : missingSpacePos;
- const int secondWordLength = isSpaceProximity ? (inputLength - spaceProximityPos - 1)
- : (inputLength - missingSpacePos);
- const int typedLetterMultiplier = correction->TYPED_LETTER_MULTIPLIER;
-
- bool firstCapitalizedWordDemotion = false;
- if (firstWordLength >= 2) {
- firstCapitalizedWordDemotion = isUpperCase(word[0]);
- }
-
- bool secondCapitalizedWordDemotion = false;
- if (secondWordLength >= 2) {
- secondCapitalizedWordDemotion = isUpperCase(word[firstWordLength + 1]);
- }
-
- const bool capitalizedWordDemotion =
- firstCapitalizedWordDemotion ^ secondCapitalizedWordDemotion;
-
- if (DEBUG_DICT_FULL) {
- AKLOGI("Two words: %c, %c, %d",
- word[0], word[firstWordLength + 1], capitalizedWordDemotion);
- }
-
- if (firstWordLength == 0 || secondWordLength == 0) {
- return 0;
- }
- const int firstDemotionRate = 100 - 100 / (firstWordLength + 1);
- int tempFirstFreq = firstFreq;
- multiplyRate(firstDemotionRate, &tempFirstFreq);
-
- const int secondDemotionRate = 100 - 100 / (secondWordLength + 1);
- int tempSecondFreq = secondFreq;
- multiplyRate(secondDemotionRate, &tempSecondFreq);
-
- const int totalLength = firstWordLength + secondWordLength;
-
- // Promote pairFreq with multiplying by 2, because the word length is the same as the typed
- // length.
- int totalFreq = tempFirstFreq + tempSecondFreq;
-
- // This is a workaround to try offsetting the not-enough-demotion which will be done in
- // calcNormalizedScore in Utils.java.
- // In calcNormalizedScore the score will be demoted by (1 - 1 / length)
- // but we demoted only (1 - 1 / (length + 1)) so we will additionally adjust freq by
- // (1 - 1 / length) / (1 - 1 / (length + 1)) = (1 - 1 / (length * length))
- const int normalizedScoreNotEnoughDemotionAdjustment = 100 - 100 / (totalLength * totalLength);
- multiplyRate(normalizedScoreNotEnoughDemotionAdjustment, &totalFreq);
-
- // At this moment, totalFreq is calculated by the following formula:
- // (firstFreq * (1 - 1 / (firstWordLength + 1)) + secondFreq * (1 - 1 / (secondWordLength + 1)))
- // * (1 - 1 / totalLength) / (1 - 1 / (totalLength + 1))
-
- multiplyIntCapped(powerIntCapped(typedLetterMultiplier, totalLength), &totalFreq);
-
- // This is another workaround to offset the demotion which will be done in
- // calcNormalizedScore in Utils.java.
- // In calcNormalizedScore the score will be demoted by (1 - 1 / length) so we have to promote
- // the same amount because we already have adjusted the synthetic freq of this "missing or
- // mistyped space" suggestion candidate above in this method.
- const int normalizedScoreDemotionRateOffset = (100 + 100 / totalLength);
- multiplyRate(normalizedScoreDemotionRateOffset, &totalFreq);
-
- if (isSpaceProximity) {
- // A word pair with one space proximity correction
- if (DEBUG_DICT) {
- AKLOGI("Found a word pair with space proximity correction.");
- }
- multiplyIntCapped(typedLetterMultiplier, &totalFreq);
- multiplyRate(WORDS_WITH_PROXIMITY_CHARACTER_DEMOTION_RATE, &totalFreq);
- }
-
- multiplyRate(WORDS_WITH_MISSING_SPACE_CHARACTER_DEMOTION_RATE, &totalFreq);
-
- if (capitalizedWordDemotion) {
- multiplyRate(TWO_WORDS_CAPITALIZED_DEMOTION_RATE, &totalFreq);
- }
-
- return totalFreq;
-}
-
/* Damerau-Levenshtein distance */
inline static int editDistanceInternal(
int* editDistanceTable, const unsigned short* before,
diff --git a/native/src/correction.h b/native/src/correction.h
index b00c8e120dc1b5b1051e00d349214b2e5243ff2e..aec7bbd73e845cd7161424f1a2f4a2415250440d 100644
--- a/native/src/correction.h
+++ b/native/src/correction.h
@@ -152,8 +152,6 @@ class Correction {
const int inputLength);
static int calcFreqForSplitTwoWords(const int firstFreq, const int secondFreq,
const Correction* correction, const unsigned short *word);
- static int calcFreqForSplitTwoWordsOld(const int firstFreq, const int secondFreq,
- const Correction* correction, const unsigned short *word);
static double calcNormalizedScore(const unsigned short* before, const int beforeLength,
const unsigned short* after, const int afterLength, const int score);
static int editDistance(const unsigned short* before,
diff --git a/native/src/unigram_dictionary.cpp b/native/src/unigram_dictionary.cpp
index a7eb4e10dad43e85223aebae8c492ec2c3601ee9..6a8973761ac6679cdf8e20220e97809e13fa7e41 100644
--- a/native/src/unigram_dictionary.cpp
+++ b/native/src/unigram_dictionary.cpp
@@ -557,80 +557,6 @@ void UnigramDictionary::getSplitTwoWordsSuggestions(ProximityInfo *proximityInfo
return;
}
-void UnigramDictionary::getSplitTwoWordsSuggestionsOld(ProximityInfo *proximityInfo,
- const int *xcoordinates, const int *ycoordinates, const int *codes,
- const bool useFullEditDistance, const int inputLength, const int missingSpacePos,
- const int spaceProximityPos, Correction *correction, WordsPriorityQueuePool* queuePool) {
- WordsPriorityQueue *masterQueue = queuePool->getMasterQueue();
-
- if (DEBUG_DICT) {
- int inputCount = 0;
- if (spaceProximityPos >= 0) ++inputCount;
- if (missingSpacePos >= 0) ++inputCount;
- assert(inputCount <= 1);
- }
- const bool isSpaceProximity = spaceProximityPos >= 0;
- const int firstWordStartPos = 0;
- const int secondWordStartPos = isSpaceProximity ? (spaceProximityPos + 1) : missingSpacePos;
- const int firstWordLength = isSpaceProximity ? spaceProximityPos : missingSpacePos;
- const int secondWordLength = isSpaceProximity
- ? (inputLength - spaceProximityPos - 1)
- : (inputLength - missingSpacePos);
-
- if (inputLength >= MAX_WORD_LENGTH) return;
- if (0 >= firstWordLength || 0 >= secondWordLength || firstWordStartPos >= secondWordStartPos
- || firstWordStartPos < 0 || secondWordStartPos + secondWordLength > inputLength)
- return;
-
- const int newWordLength = firstWordLength + secondWordLength + 1;
-
-
- // Space proximity preparation
- //WordsPriorityQueue *subQueue = queuePool->getSubQueue1();
- //initSuggestions(proximityInfo, xcoordinates, ycoordinates, codes, firstWordLength, subQueue,
- //correction);
- //getSuggestionCandidates(useFullEditDistance, firstWordLength, correction, subQueue, false,
- //MAX_ERRORS_FOR_TWO_WORDS);
-
- // Allocating variable length array on stack
- unsigned short word[newWordLength];
- const int firstFreq = getMostFrequentWordLike(
- firstWordStartPos, firstWordLength, proximityInfo, mWord);
- if (DEBUG_DICT) {
- AKLOGI("First freq: %d", firstFreq);
- }
- if (firstFreq <= 0) return;
-
- for (int i = 0; i < firstWordLength; ++i) {
- word[i] = mWord[i];
- }
-
- const int secondFreq = getMostFrequentWordLike(
- secondWordStartPos, secondWordLength, proximityInfo, mWord);
- if (DEBUG_DICT) {
- AKLOGI("Second freq: %d", secondFreq);
- }
- if (secondFreq <= 0) return;
-
- word[firstWordLength] = SPACE;
- for (int i = (firstWordLength + 1); i < newWordLength; ++i) {
- word[i] = mWord[i - firstWordLength - 1];
- }
-
- // TODO: Remove initSuggestions and correction->setCorrectionParams
- initSuggestions(proximityInfo, xcoordinates, ycoordinates, codes, inputLength, correction);
-
- correction->setCorrectionParams(-1 /* skipPos */, -1 /* excessivePos */,
- -1 /* transposedPos */, spaceProximityPos, missingSpacePos,
- useFullEditDistance, false /* doAutoCompletion */, MAX_ERRORS_FOR_TWO_WORDS);
- const int pairFreq = correction->getFreqForSplitTwoWords(firstFreq, secondFreq, word);
- if (DEBUG_DICT) {
- AKLOGI("Split two words: %d, %d, %d, %d", firstFreq, secondFreq, pairFreq, inputLength);
- }
- addWord(word, newWordLength, pairFreq, masterQueue);
- return;
-}
-
// Wrapper for getMostFrequentWordLikeInner, which matches it to the previous
// interface.
inline int UnigramDictionary::getMostFrequentWordLike(const int startInputIndex,
diff --git a/native/src/unigram_dictionary.h b/native/src/unigram_dictionary.h
index 461e73586465aa32c6d1b0e699879dbc8e687277..0b82719544f3f9b19087ed32a4113dac7f5cda00 100644
--- a/native/src/unigram_dictionary.h
+++ b/native/src/unigram_dictionary.h
@@ -106,10 +106,6 @@ class UnigramDictionary {
const bool useFullEditDistance, const int inputLength, const int spaceProximityPos,
const int missingSpacePos, Correction *correction, WordsPriorityQueuePool* queuePool,
const bool hasAutoCorrectionCandidate);
- void getSplitTwoWordsSuggestionsOld(ProximityInfo *proximityInfo,
- const int *xcoordinates, const int *ycoordinates, const int *codes,
- const bool useFullEditDistance, const int inputLength, const int spaceProximityPos,
- const int missingSpacePos, Correction *correction, WordsPriorityQueuePool* queuePool);
void getMissingSpaceWords(ProximityInfo *proximityInfo, const int *xcoordinates,
const int *ycoordinates, const int *codes, const bool useFullEditDistance,
const int inputLength, const int missingSpacePos, Correction *correction,