diff --git a/native/jni/src/suggest/core/policy/weighting.cpp b/native/jni/src/suggest/core/policy/weighting.cpp
index c202b81..a06e7d0 100644
--- a/native/jni/src/suggest/core/policy/weighting.cpp
+++ b/native/jni/src/suggest/core/policy/weighting.cpp
@@ -110,10 +110,14 @@
         return weighting->getOmissionCost(parentDicNode, dicNode);
     case CT_ADDITIONAL_PROXIMITY:
         // only used for typing
-        return weighting->getAdditionalProximityCost();
+        // TODO: Quit calling getMatchedCost().
+        return weighting->getAdditionalProximityCost()
+                + weighting->getMatchedCost(traverseSession, dicNode, inputStateG);
     case CT_SUBSTITUTION:
         // only used for typing
-        return weighting->getSubstitutionCost();
+        // TODO: Quit calling getMatchedCost().
+        return weighting->getSubstitutionCost()
+                + weighting->getMatchedCost(traverseSession, dicNode, inputStateG);
     case CT_NEW_WORD_SPACE_OMISSION:
         return weighting->getNewWordSpatialCost(traverseSession, dicNode, inputStateG);
     case CT_MATCH:
@@ -176,9 +180,9 @@
         case CT_OMISSION:
             return 0;
         case CT_ADDITIONAL_PROXIMITY:
-            return 0; /* 0 because CT_MATCH will be called */
+            return 1;
         case CT_SUBSTITUTION:
-            return 0; /* 0 because CT_MATCH will be called */
+            return 1;
         case CT_NEW_WORD_SPACE_OMISSION:
             return 0;
         case CT_MATCH:
diff --git a/native/jni/src/suggest/core/suggest.cpp b/native/jni/src/suggest/core/suggest.cpp
index cf2df86..c715262 100644
--- a/native/jni/src/suggest/core/suggest.cpp
+++ b/native/jni/src/suggest/core/suggest.cpp
@@ -284,7 +284,6 @@
     // not treat the node as a terminal. There is no need to pass the bigram map in these cases.
     Weighting::addCostAndForwardInputIndex(WEIGHTING, CT_ADDITIONAL_PROXIMITY,
             traverseSession, dicNode, childDicNode, 0 /* multiBigramMap */);
-    weightChildNode(traverseSession, childDicNode);
     processExpandedDicNode(traverseSession, childDicNode);
 }
 
@@ -292,7 +291,6 @@
         DicNode *dicNode, DicNode *childDicNode) const {
     Weighting::addCostAndForwardInputIndex(WEIGHTING, CT_SUBSTITUTION, traverseSession,
             dicNode, childDicNode, 0 /* multiBigramMap */);
-    weightChildNode(traverseSession, childDicNode);
     processExpandedDicNode(traverseSession, childDicNode);
 }
 
@@ -403,7 +401,7 @@
     if (dicNode->isCompletion(inputSize)) {
         Weighting::addCostAndForwardInputIndex(WEIGHTING, CT_COMPLETION, traverseSession,
                 0 /* parentDicNode */, dicNode, 0 /* multiBigramMap */);
-    } else { // completion
+    } else {
         Weighting::addCostAndForwardInputIndex(WEIGHTING, CT_MATCH, traverseSession,
                 0 /* parentDicNode */, dicNode, 0 /* multiBigramMap */);
     }
diff --git a/native/jni/src/suggest/policyimpl/typing/scoring_params.cpp b/native/jni/src/suggest/policyimpl/typing/scoring_params.cpp
index b621eef..6a2db68 100644
--- a/native/jni/src/suggest/policyimpl/typing/scoring_params.cpp
+++ b/native/jni/src/suggest/policyimpl/typing/scoring_params.cpp
@@ -49,7 +49,7 @@
 const float ScoringParams::INSERTION_COST_FIRST_CHAR = 0.639f;
 const float ScoringParams::TRANSPOSITION_COST = 0.5608f;
 const float ScoringParams::SPACE_SUBSTITUTION_COST = 0.334f;
-const float ScoringParams::ADDITIONAL_PROXIMITY_COST = 0.4576f;
+const float ScoringParams::ADDITIONAL_PROXIMITY_COST = 0.37972f;
 const float ScoringParams::SUBSTITUTION_COST = 0.3806f;
 const float ScoringParams::COST_NEW_WORD = 0.0314f;
 const float ScoringParams::COST_SECOND_OR_LATER_WORD_FIRST_CHAR_UPPERCASE = 0.3224f;
diff --git a/native/jni/src/suggest/policyimpl/typing/typing_weighting.cpp b/native/jni/src/suggest/policyimpl/typing/typing_weighting.cpp
index 1d590c3..db7a39e 100644
--- a/native/jni/src/suggest/policyimpl/typing/typing_weighting.cpp
+++ b/native/jni/src/suggest/policyimpl/typing/typing_weighting.cpp
@@ -68,7 +68,8 @@
             }
             break;
         case CT_ADDITIONAL_PROXIMITY:
-            return  ErrorTypeUtils::PROXIMITY_CORRECTION;
+            // TODO: Change to EDIT_CORRECTION.
+            return ErrorTypeUtils::PROXIMITY_CORRECTION;
         case CT_OMISSION:
             if (parentDicNode->canBeIntentionalOmission()) {
                 return ErrorTypeUtils::INTENTIONAL_OMISSION;
@@ -77,6 +78,8 @@
             }
             break;
         case CT_SUBSTITUTION:
+            // TODO: Quit settng PROXIMITY_CORRECTION.
+            return ErrorTypeUtils::EDIT_CORRECTION | ErrorTypeUtils::PROXIMITY_CORRECTION;
         case CT_INSERTION:
         case CT_TERMINAL_INSERTION:
         case CT_TRANSPOSITION: