We tried the case of , , , . Samples of input data vector were generated using independent uniformly distributed RVs (in the range 0 to 1), then scaled by a random scale factor in the range 0 to 10. Note that the PDF used for data generation is not important because we are comparing two PDF approximations for the same input feature vector. The PDF of was computed using the methods of Sections 7.2 and 7.1.2. The results are shown in Figure 7.1. The two methods agreed very closely  within a maximum error of .059 in log space.
