Differentiate exact matches' minor errors.

Bug: 8844931
Change-Id: I06754643188ccd28ba8c873878f7761787d91ff6

native/jni/src/suggest/core/dicnode/dic_node.h

@@ -23,6 +23,7 @@
 #include "suggest/core/dicnode/internal/dic_node_state.h"
 #include "suggest/core/dicnode/internal/dic_node_properties.h"
 #include "suggest/core/dictionary/digraph_utils.h"
+#include "suggest/core/dictionary/error_type_utils.h"
 #include "utils/char_utils.h"
 
 #if DEBUG_DICT
@@ -493,8 +494,8 @@ class DicNode {
         mDicNodeState.mDicNodeStateScoring.advanceDigraphIndex();
     }
 
-    bool isExactMatch() const {
+    ErrorTypeUtils::ErrorType getContainedErrorTypes() const {
-        return mDicNodeState.mDicNodeStateScoring.isExactMatch();
+        return mDicNodeState.mDicNodeStateScoring.getContainedErrorTypes();
     }
 
     bool isBlacklistedOrNotAWord() const {
@@ -535,8 +536,8 @@ class DicNode {
             return false;
         }
         // Promote exact matches to prevent them from being pruned.
-        const bool leftExactMatch = isExactMatch();
+        const bool leftExactMatch = ErrorTypeUtils::isExactMatch(getContainedErrorTypes());
-        const bool rightExactMatch = right->isExactMatch();
+        const bool rightExactMatch = ErrorTypeUtils::isExactMatch(right->getContainedErrorTypes());
         if (leftExactMatch != rightExactMatch) {
             return leftExactMatch;
         }

native/jni/src/suggest/core/dicnode/internal/dic_node_state_scoring.h

@@ -32,7 +32,7 @@ class DicNodeStateScoring {
               mDigraphIndex(DigraphUtils::NOT_A_DIGRAPH_INDEX),
               mEditCorrectionCount(0), mProximityCorrectionCount(0),
               mNormalizedCompoundDistance(0.0f), mSpatialDistance(0.0f), mLanguageDistance(0.0f),
-              mRawLength(0.0f), mContainingErrorTypes(ErrorTypeUtils::NOT_AN_ERROR),
+              mRawLength(0.0f), mContainedErrorTypes(ErrorTypeUtils::NOT_AN_ERROR),
               mNormalizedCompoundDistanceAfterFirstWord(MAX_VALUE_FOR_WEIGHTING) {
     }
 
@@ -48,7 +48,7 @@ class DicNodeStateScoring {
         mDoubleLetterLevel = NOT_A_DOUBLE_LETTER;
         mDigraphIndex = DigraphUtils::NOT_A_DIGRAPH_INDEX;
         mNormalizedCompoundDistanceAfterFirstWord = MAX_VALUE_FOR_WEIGHTING;
-        mContainingErrorTypes = ErrorTypeUtils::NOT_AN_ERROR;
+        mContainedErrorTypes = ErrorTypeUtils::NOT_AN_ERROR;
     }
 
     AK_FORCE_INLINE void init(const DicNodeStateScoring *const scoring) {
@@ -60,7 +60,7 @@ class DicNodeStateScoring {
         mRawLength = scoring->mRawLength;
         mDoubleLetterLevel = scoring->mDoubleLetterLevel;
         mDigraphIndex = scoring->mDigraphIndex;
-        mContainingErrorTypes = scoring->mContainingErrorTypes;
+        mContainedErrorTypes = scoring->mContainedErrorTypes;
         mNormalizedCompoundDistanceAfterFirstWord =
                 scoring->mNormalizedCompoundDistanceAfterFirstWord;
     }
@@ -69,7 +69,7 @@ class DicNodeStateScoring {
             const int inputSize, const int totalInputIndex,
             const ErrorTypeUtils::ErrorType errorType) {
         addDistance(spatialCost, languageCost, doNormalization, inputSize, totalInputIndex);
-        mContainingErrorTypes = mContainingErrorTypes | errorType;
+        mContainedErrorTypes = mContainedErrorTypes | errorType;
         if (ErrorTypeUtils::isEditCorrectionError(errorType)) {
             ++mEditCorrectionCount;
         }
@@ -169,8 +169,8 @@ class DicNodeStateScoring {
         }
     }
 
-    bool isExactMatch() const {
+    ErrorTypeUtils::ErrorType getContainedErrorTypes() const {
-        return ErrorTypeUtils::isExactMatch(mContainingErrorTypes);
+        return mContainedErrorTypes;
     }
 
  private:
@@ -188,7 +188,7 @@ class DicNodeStateScoring {
     float mLanguageDistance;
     float mRawLength;
     // All accumulated error types so far
-    ErrorTypeUtils::ErrorType mContainingErrorTypes;
+    ErrorTypeUtils::ErrorType mContainedErrorTypes;
     float mNormalizedCompoundDistanceAfterFirstWord;
 
     AK_FORCE_INLINE void addDistance(float spatialDistance, float languageDistance,

native/jni/src/suggest/core/dictionary/error_type_utils.h

@@ -47,9 +47,8 @@ class ErrorTypeUtils {
     // A new word error should be an edit correction error or a proximity correction error.
     static const ErrorType NEW_WORD;
 
-    // TODO: Differentiate errors.
+    static bool isExactMatch(const ErrorType containedErrorTypes) {
-    static bool isExactMatch(const ErrorType containingErrors) {
+        return (containedErrorTypes & ~ERRORS_TREATED_AS_AN_EXACT_MATCH) == 0;
-        return (containingErrors & ~ERRORS_TREATED_AS_AN_EXACT_MATCH) == 0;
     }
 
     static bool isEditCorrectionError(const ErrorType errorType) {

native/jni/src/suggest/core/dictionary/suggestions_output_utils.cpp

@@ -18,8 +18,9 @@
 
 #include "suggest/core/dicnode/dic_node.h"
 #include "suggest/core/dicnode/dic_node_utils.h"
-#include "suggest/core/dictionary/dictionary.h"
 #include "suggest/core/dictionary/binary_dictionary_shortcut_iterator.h"
+#include "suggest/core/dictionary/dictionary.h"
+#include "suggest/core/dictionary/error_type_utils.h"
 #include "suggest/core/policy/scoring.h"
 #include "suggest/core/session/dic_traverse_session.h"
 
@@ -98,7 +99,8 @@ const int SuggestionsOutputUtils::MIN_LEN_FOR_MULTI_WORD_AUTOCORRECT = 16;
         const bool isPossiblyOffensiveWord =
                 traverseSession->getDictionaryStructurePolicy()->getProbability(
                         terminalDicNode->getProbability(), NOT_A_PROBABILITY) <= 0;
-        const bool isExactMatch = terminalDicNode->isExactMatch();
+        const bool isExactMatch =
+                ErrorTypeUtils::isExactMatch(terminalDicNode->getContainedErrorTypes());
         const bool isFirstCharUppercase = terminalDicNode->isFirstCharUppercase();
         // Heuristic: We exclude freq=0 first-char-uppercase words from exact match.
         // (e.g. "AMD" and "and")
@@ -115,8 +117,8 @@ const int SuggestionsOutputUtils::MIN_LEN_FOR_MULTI_WORD_AUTOCORRECT = 16;
         // TODO: Better integration with java side autocorrection logic.
         const int finalScore = scoringPolicy->calculateFinalScore(
                 compoundDistance, traverseSession->getInputSize(),
-                terminalDicNode->isExactMatch()
+                terminalDicNode->getContainedErrorTypes(),
-                        || (forceCommitMultiWords && terminalDicNode->hasMultipleWords())
+                (forceCommitMultiWords && terminalDicNode->hasMultipleWords())
                          || (isValidWord && scoringPolicy->doesAutoCorrectValidWord()));
         if (maxScore < finalScore && isValidWord) {
             maxScore = finalScore;
@@ -149,7 +151,9 @@ const int SuggestionsOutputUtils::MIN_LEN_FOR_MULTI_WORD_AUTOCORRECT = 16;
             const bool sameAsTyped = scoringPolicy->sameAsTyped(traverseSession, terminalDicNode);
             const int shortcutBaseScore = scoringPolicy->doesAutoCorrectValidWord() ?
                      scoringPolicy->calculateFinalScore(compoundDistance,
-                             traverseSession->getInputSize(), true /* forceCommit */) : finalScore;
+                             traverseSession->getInputSize(),
+                             terminalDicNode->getContainedErrorTypes(),
+                             true /* forceCommit */) : finalScore;
             const int updatedOutputWordIndex = outputShortcuts(&shortcutIt,
                     outputWordIndex, shortcutBaseScore, outputCodePoints, frequencies, outputTypes,
                     sameAsTyped);

native/jni/src/suggest/core/policy/scoring.h

@@ -28,7 +28,7 @@ class DicTraverseSession;
 class Scoring {
  public:
     virtual int calculateFinalScore(const float compoundDistance, const int inputSize,
-            const bool forceCommit) const = 0;
+            const ErrorTypeUtils::ErrorType containedErrorTypes, const bool forceCommit) const = 0;
     virtual bool getMostProbableString(const DicTraverseSession *const traverseSession,
             const int terminalSize, const float languageWeight, int *const outputCodePoints,
             int *const type, int *const freq) const = 0;

native/jni/src/suggest/policyimpl/typing/scoring_params.cpp

@@ -22,6 +22,12 @@ const float ScoringParams::MAX_SPATIAL_DISTANCE = 1.0f;
 const int ScoringParams::THRESHOLD_NEXT_WORD_PROBABILITY = 40;
 const int ScoringParams::THRESHOLD_NEXT_WORD_PROBABILITY_FOR_CAPPED = 120;
 const float ScoringParams::AUTOCORRECT_OUTPUT_THRESHOLD = 1.0f;
+
+const float ScoringParams::EXACT_MATCH_PROMOTION = 1.1f;
+const float ScoringParams::CASE_ERROR_PENALTY_FOR_EXACT_MATCH = 0.01f;
+const float ScoringParams::ACCENT_ERROR_PENALTY_FOR_EXACT_MATCH = 0.02f;
+const float ScoringParams::DIGRAPH_PENALTY_FOR_EXACT_MATCH = 0.03f;
+
 // TODO: Unlimit max cache dic node size
 const int ScoringParams::MAX_CACHE_DIC_NODE_SIZE = 170;
 const int ScoringParams::MAX_CACHE_DIC_NODE_SIZE_FOR_SINGLE_POINT = 310;

native/jni/src/suggest/policyimpl/typing/scoring_params.h

@@ -32,6 +32,11 @@ class ScoringParams {
     static const int MAX_CACHE_DIC_NODE_SIZE_FOR_SINGLE_POINT;
     static const int THRESHOLD_SHORT_WORD_LENGTH;
 
+    static const float EXACT_MATCH_PROMOTION;
+    static const float CASE_ERROR_PENALTY_FOR_EXACT_MATCH;
+    static const float ACCENT_ERROR_PENALTY_FOR_EXACT_MATCH;
+    static const float DIGRAPH_PENALTY_FOR_EXACT_MATCH;
+
     // Numerically optimized parameters (currently for tap typing only).
     // TODO: add ability to modify these constants programmatically.
     // TODO: explore optimization of gesture parameters.

native/jni/src/suggest/policyimpl/typing/typing_scoring.h

@@ -18,6 +18,7 @@
 #define LATINIME_TYPING_SCORING_H
 
 #include "defines.h"
+#include "suggest/core/dictionary/error_type_utils.h"
 #include "suggest/core/policy/scoring.h"
 #include "suggest/core/session/dic_traverse_session.h"
 #include "suggest/policyimpl/typing/scoring_params.h"
@@ -53,12 +54,26 @@ class TypingScoring : public Scoring {
     }
 
     AK_FORCE_INLINE int calculateFinalScore(const float compoundDistance,
-            const int inputSize, const bool forceCommit) const {
+            const int inputSize, const ErrorTypeUtils::ErrorType containedErrorTypes,
+            const bool forceCommit) const {
         const float maxDistance = ScoringParams::DISTANCE_WEIGHT_LANGUAGE
                 + static_cast<float>(inputSize) * ScoringParams::TYPING_MAX_OUTPUT_SCORE_PER_INPUT;
-        const float score = ScoringParams::TYPING_BASE_OUTPUT_SCORE
+        float score = ScoringParams::TYPING_BASE_OUTPUT_SCORE - compoundDistance / maxDistance;
-                - compoundDistance / maxDistance
+        if (forceCommit) {
-                + (forceCommit ? ScoringParams::AUTOCORRECT_OUTPUT_THRESHOLD : 0.0f);
+            score += ScoringParams::AUTOCORRECT_OUTPUT_THRESHOLD;
+        }
+        if (ErrorTypeUtils::isExactMatch(containedErrorTypes)) {
+            score += ScoringParams::EXACT_MATCH_PROMOTION;
+            if ((ErrorTypeUtils::MATCH_WITH_CASE_ERROR & containedErrorTypes) != 0) {
+                score -= ScoringParams::CASE_ERROR_PENALTY_FOR_EXACT_MATCH;
+            }
+            if ((ErrorTypeUtils::MATCH_WITH_ACCENT_ERROR & containedErrorTypes) != 0) {
+                score -= ScoringParams::ACCENT_ERROR_PENALTY_FOR_EXACT_MATCH;
+            }
+            if ((ErrorTypeUtils::MATCH_WITH_DIGRAPH & containedErrorTypes) != 0) {
+                score -= ScoringParams::DIGRAPH_PENALTY_FOR_EXACT_MATCH;
+            }
+        }
         return static_cast<int>(score * SUGGEST_INTERFACE_OUTPUT_SCALE);
     }