Weighted cosine spectral similarity

Description

Is used to determine the similarity between two spectra (usually library and query spectra).

Method parameters

Weights
Weights are applied to m/z and intensity: m/za*Intensityb
Minimum cos similarity
Minimum cosine similarty for a match
Remove unmatched signals
(Sometimes called reversed cosine similarity) Before cosine calculation, remove all signals that were not found in both spectra (leads to higher cosine similarity, especially for spectra with low number of signals, but also to higher false-positive rate.