Figure 5

P5 at optimal and interpolated values of μ for each λ in the pmra model. Squares represent optimal μ at each λ, corresponding to the squares in Figure 4. Diamonds represent interpolated μ at each λ, corresponding to the regression line in Figure 4. P5 of the globally optimal parameter setting is shown as the dotted line. The filled square and diamond represent points at which P5 is significantly lower than the globally optimal setting.