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. Author manuscript; available in PMC: 2019 Nov 2.
Published in final edited form as: J Proteome Res. 2018 Oct 18;17(11):3644–3656. doi: 10.1021/acs.jproteome.8b00206

Figure 3:

Figure 3:

Using decoys to set the m parameter. The figure plots the error E(m) (Equation 12) as a function of the parameter m. To generate this plot, the Plasmodium data set was analyzed using both XCorr p-value and res-ev p-value. All decoy p-values for each spectrum were retained, yielding a set of 197,029 pairs of p-values. Values of E(m) were computed for m = 1.00, 1.01, … , 1.99. The minimum error value occurs around m = 1.20.