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Improving neural correlation algorithm

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BlackLight 2011-02-17 01:59:33 +01:00
parent 50f287fbb5
commit fcb2f25476
1 changed files with 5 additions and 1 deletions
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6
neural.c
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@ -289,6 +289,8 @@ double
AI_alert_neural_som_correlation ( const AI_snort_alert *a, const AI_snort_alert *b ) AI_alert_neural_som_correlation ( const AI_snort_alert *a, const AI_snort_alert *b )
{ {
AI_som_alert_tuple t1, t2; AI_som_alert_tuple t1, t2;
double distance = 0.0,
max_distance = 0.0;
t1.gid = a->gid; t1.gid = a->gid;
t1.sid = a->sid; t1.sid = a->sid;
@ -310,7 +312,9 @@ AI_alert_neural_som_correlation ( const AI_snort_alert *a, const AI_snort_alert
t2.timestamp = b->timestamp; t2.timestamp = b->timestamp;
t2.desc = b->desc; t2.desc = b->desc;
return 1.0 / ( 1.0 + __AI_som_alert_distance ( t1, t2 )); distance = __AI_som_alert_distance ( t1, t2 );
max_distance = sqrt ((double) ( 2 * (config->outputNeuronsPerSide-1) * (config->outputNeuronsPerSide-1) ));
return (( distance == max_distance ) ? 0.0 : ( 1.0 / ( 1.0 + distance )));
} /* ----- end of function AI_alert_neural_som_correlation ----- */ } /* ----- end of function AI_alert_neural_som_correlation ----- */
/** /**