For a four-color CMYK printer, develop a spectral Neugebauer model (Equation 7.51) with Demichel weights for 16 Neugebauer primaries. Estimate the weights using training samples with least-squares algorithms and Yule–Nielson factor (m)

as a free parameter.

a. Plot the accuracy of the model as a function of m.

b. For the best m, plot the model accuracy as a function of the number of uniformly sampled data sets (e.g., 34, 44, 54, 64, etc.).