git-svn-id: https://svn.microneil.com/svn/SNFMulti/trunk@63 dc71a809-1921-45c4-985c-09c81d0142d9

SNFMulti.cpp

@@ -25,7 +25,7 @@ using namespace std;
 
 //// Version Info
 
-const char* SNF_ENGINE_VERSION = "SNFMulti Engine Version 3.1.3 Build: " __DATE__ " " __TIME__;
+const char* SNF_ENGINE_VERSION = "SNFMulti Engine Version 3.1.4 Build: " __DATE__ " " __TIME__;
 
 //// Script Caller Methods
 
@@ -1692,8 +1692,19 @@ int snf_EngineHandler::scanMessage(
   while(NULL!=ResultCursor) {                                                   // While we have records to process...
     captureMatchRecord(TmpSNFMatch, ResultCursor);                              // grab the next record and evaluate it.
 
-    bool isPanickedRule = MyCFGPacket.isRulePanic(TmpSNFMatch.ruleid);
-    bool isVotingCandidate = (false == isPanickedRule);
+    // Mitigate short-match rulebase events to prevent false positives.
+
+    const size_t minimumPatternLength = 5;                                      // Establish a minimum match length.
+    size_t matchSpan = (TmpSNFMatch.endex - TmpSNFMatch.index);                 // Determine the length of this match.
+    bool isShortMatchEvent = (minimumPatternLength > matchSpan);                // Identify short-match events.
+
+    bool isPanickedRule = (                                                     // In addition to rule IDs that are
+      MyCFGPacket.isRulePanic(TmpSNFMatch.ruleid) ||                            // in the rule-panic list also treat
+      isShortMatchEvent                                                         // short match events as panic rules.
+    );
+
+    bool isVotingCandidate = (false == isPanickedRule);                         // Panic rules can't vote.
+
     bool isWhiteRule = (
       MyCFGPacket.Config()->TrainingWhiteRuleHandler.isListed(TmpSNFMatch.ruleid) ||
       0 == TmpSNFMatch.symbol