where 𝐧 . # is defined to be the set of indices for hits associated with potential mass correction 𝑐 < , 𝒏 -= {1,2, … , 𝑛 -} and 𝐵 is a user-defined parameter representing a minimum difference in match factors deemed to be substantial. The potential mass correction with the largest index, say 𝑐 * , is the proposed correction of the PIM prediction of the analyte. The SS-HM prediction is thus 𝑚 " , = 𝑚 " ! + 𝑐 * . A classification score for 𝑚 " , is defined