Mixture of Generalized Gamma Density-Based Score Function for Fastica

Figure 1

The probability density function of MGΓD for 𝑘=1, 𝑐=3, 𝛼=0.5, 𝛽=3, and 𝛾=6,2,3.5,1(𝑝1,𝑝2,𝑝3,𝑝4) respectively. The MGΓD allows us to include the case of Gaussian mixture model 𝛼=0.5 and 𝛾=2.