org.pistoiaalliance.helm.HELMSimilarityLibrary

Class Fingerprinter

java.lang.Object

org.pistoiaalliance.helm.HELMSimilarityLibrary.Fingerprinter

public class Fingerprinter
extends Object

Fingerprinter class creates a hashed fingerprint from a set of paths using SHA-2 as the kryptographical hash function.

Author:

bueltel

Constructor Summary

Constructors

Constructor and Description
Fingerprinter()

Method Summary

Modifier and Type	Method and Description
static BitSet	calculateFingerprint(org.helm.notation2.parser.notation.HELM2Notation notation) Calculates the fingerprint for a given HELM notation by enumerating all of the monomer paths and representing each path as one bit in the fingerprint of size 1024.
static BitSet	calculateFingerprintNaturalAnalogs(org.helm.notation2.parser.notation.HELM2Notation notation) Calculates a combined fingerprint for a given HELM notation by enumerating all of the original monomer paths and all of the monomer paths converted into natural analogs and representing each path as one bit in the fingerprint of size 1024.
static BitSet	getHashedFingerprint(Set<String> totalPaths)

Methods inherited from class java.lang.Object

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

Constructor Detail

Fingerprinter

public Fingerprinter()

Method Detail

calculateFingerprint

public static BitSet calculateFingerprint(org.helm.notation2.parser.notation.HELM2Notation notation)
                                   throws Exception

Calculates the fingerprint for a given HELM notation by enumerating all of the monomer paths and representing each path as one bit in the fingerprint of size 1024.

Parameters:

notation - Input HELM notation that is translated into a bitSet fingerprint

Returns:

bit set fingerprint

Throws:

Exception - if anything goes wrong

calculateFingerprintNaturalAnalogs

public static BitSet calculateFingerprintNaturalAnalogs(org.helm.notation2.parser.notation.HELM2Notation notation)
                                                 throws Exception

Calculates a combined fingerprint for a given HELM notation by enumerating all of the original monomer paths and all of the monomer paths converted into natural analogs and representing each path as one bit in the fingerprint of size 1024.

Parameters:

notation - Input HELM notation that is translated into a bitSet fingerprint

Returns:

bit set fingerprint

Throws:

Exception - if anything goes wrong

getHashedFingerprint

public static BitSet getHashedFingerprint(Set<String> totalPaths)
                                   throws NoSuchAlgorithmException

Parameters:

totalPaths - Set of paths based on the monomers of a HELM notation

Returns:

bit set fingerprint

Throws:

NoSuchAlgorithmException - if anything goes wrong