What are the weighting factors for mass and abundance when using MassHunter library search ?
This was asked (but buried) in a response to another question a few months ago, and I have not seen an answer.
Given two masses of equal abundance the greater mass is given more weight than the lighter one.
Do you require a mathematical equation that defines weight as a combination of mass and abundance or is this rather general explanation enough?
Thanks Tom_Barrett for your reply. We were looking for the specific weighting factors such as 0, or sqrt, or 1, or squared etc, for both the mass and the abundance. For instance, NIST Search weighting factors are published and vary among Similarity Search, Identity Search or AMDIS. We don't need the entire dot product formula, just the weighting factors for MH library search.
I checked with the R&D team and was given the following formula as an answer to the question of mass and abundance weighting.
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