Convolution of Gamma Distributions
coga: Convolution of independent Gamma Distributions
Convolution of Gamma Distributions (Exact Method).
Convolution of Gamma distribuitons (Approximation Method)
Convolution of Two Gamma Distributions (Exact Method).
Recurrence Identity of Shape Parameter for pcoga2dim
Evaluation for density and distribution function of convolution of gamma distributions in R. Two related exact methods and one approximate method are implemented with efficient algorithm and C++ code. A quick guide for choosing correct method and usage of this package is given in package vignette. For the detail of methods used in this package, we refer the user to Mathai(1982)<doi:10.1007/BF02481056>, Moschopoulos(1984)<doi:10.1007/BF02481123>, Barnabani(2017)<doi:10.1080/03610918.2014.963612>, Hu et al.(2020)<doi:10.1007/s00180-019-00924-9>.