Package com.tonic.analysis.fingerprint

Class FingerprintComparator

java.lang.Object

com.tonic.analysis.fingerprint.FingerprintComparator

public class FingerprintComparator
extends Object

Scorer that compares two method fingerprints into a weighted similarity score with a confidence estimate.

Constructor Summary

Constructors

Constructor	Description
FingerprintComparator()

Method Summary

Modifier and Type	Method	Description
FingerprintMatch	compare(MethodFingerprint a, MethodFingerprint b)	Compares two fingerprints level by level, using exact hash equality or feature similarity per level.
boolean	isDefiniteMatch(FingerprintMatch match)	Decides whether a match is near-certain, requiring score at least 0.95 and confidence at least 0.8.
boolean	isLikelyMatch(FingerprintMatch match, double threshold)	Decides whether a match is likely, requiring the given score threshold and confidence at least 0.5.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FingerprintComparator

public FingerprintComparator()

Method Detail

compare

public FingerprintMatch compare(MethodFingerprint a,
                                MethodFingerprint b)

Compares two fingerprints level by level, using exact hash equality or feature similarity per level.

Parameters:

a - the first fingerprint

b - the second fingerprint

Returns:

a match with the weighted score, confidence, and per-level scores

isLikelyMatch

public boolean isLikelyMatch(FingerprintMatch match,
                             double threshold)

Decides whether a match is likely, requiring the given score threshold and confidence at least 0.5.

Parameters:

match - the match to test

threshold - the minimum acceptable score

Returns:

true if the match clears both thresholds

isDefiniteMatch

public boolean isDefiniteMatch(FingerprintMatch match)

Decides whether a match is near-certain, requiring score at least 0.95 and confidence at least 0.8.

Parameters:

match - the match to test

Returns:

true if the match clears both fixed thresholds