Figure 7
Fit parameters for (RQGS) and (FQPS) models. Dependence of the modified Gumbel parameters on the subject/query length ratio L S /L Q . The vertical line corresponds to Figure 5, where L S = L Q . (a): λ describes the bulk of the distribution (see Figure 5a) left). For L S >L Q , λ varies only slightly in the subject length. (b): The parameter λ2 characterizes the curvature of the pmf in the tail (see Figure 5b). Large differences between (RQGS) and (FQPS) show up in the case where L S >L Q . λ2 becomes subject-length independent for L S >L Q .