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Table 7 Fingerprints used for compounds representation

From: Robust optimization of SVM hyperparameters in the classification of bioactive compounds

Fingerprint

Abbreviation

Length

Short description

E-State fingerprint

EStateFP

79

Computes electrotopological state (E-state) index for each atom, describing its electronic state with consideration of the influence of other atoms in particular structure

Extended fingerprint

ExtFP

1024

A hashed fingerprint with each atom in the given structure being a starting point of a string of a length not exceeding six atoms. A hash code is produced for every path of such type and in turn it constitutes the basis of a bit string representing the whole structure

Klekota and Roth fingerprint

KlekFP

4860

Fingerprint analyzing the occurrence of particular chemical substructures in the given compound. Developed by Klekota and Roth

MACCS fingerprint

MACCSFP

166

Fingerprint using the MACCS keys in its bits definition

Pubchem fingerprint

PubchemFP

881

Substructure fingerprint with bits divided into several sections: hierarchic element counts, rings, simple atom pairs, simple atom nearest neighbours, detailed atom neighbourhoods, simple SMART patterns, complex SMART patterns

Substructure fingerprint

SubFP

308

Substructure fingerprint based on the SMART patterns developed by Christian Laggner