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//
// Copyright (C) David Cosgrove 2023
//
// @@ All Rights Reserved @@
// This file is part of the RDKit.
// The contents are covered by the terms of the BSD license
// which is included in the file license.txt, found at the root
// of the RDKit source tree.
//
// Options for Rascal Clustering. In general, the option names and defaults
// are taken from the paper:
// 'A Line Graph Algorithm for Clustering Chemical Structures Based
// on Common Substructural Cores', JW Raymond, PW Willett.
// https://match.pmf.kg.ac.rs/electronic_versions/Match48/match48_197-207.pdf
// https://eprints.whiterose.ac.uk/77598/
#include <RDGeneral/export.h>
#ifndef RASCALCLUSTEROPTIONS_H
#define RASCALCLUSTEROPTIONS_H
namespace RDKit {
namespace RascalMCES {
struct RDKIT_RASCALMCES_EXPORT RascalClusterOptions {
double similarityCutoff = 0.7; /* Similarity cutoff for clustering. Initial
clusters will have molecule pairs of at
least this similarity. */
double a = 0.05; /* penalty score for each unconnected component in MCES */
double b = 2.0; /* weight of matched bonds over matched atoms */
unsigned int minFragSize =
3; /* minimum number of atoms in a fragment for it to
be included in the MCES. Also p in the paper. */
double minIntraClusterSim = 0.9; /* two pairs of molecules are included in the
same cluster if the similarity between
their MCESs is greater than this. S_a
in the paper */
double clusterMergeSim = 0.6; /* two clusters are merged if fraction of
molecules they have in common is greater than
this. S_b in the paper */
unsigned int maxNumFrags = 2; /* The maximum number of fragments in any MCES.
Otherwise the MCES can be a lot of small
fragments scattered across the molecule - it
tries too hard to find a match, sometimes */
int numThreads = -1; /* The number of threads to use. If > 0, will use that
number. If <= 0, will use the number of hardware
threads plus this number. So if the number of
hardware threads is 8, and numThreads is -1, it will
use 7 threads. */
};
} // namespace RascalMCES
} // namespace RDKit
#endif // RASCALCLUSTEROPTIONS_H
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