wgp {ig} | R Documentation |
Compute the derivative of the weights in the likelihood fucntion of the inverse Gaussian type distribution.
wgp(u, kernel, nu = 1)
u |
Vector of values. |
kernel |
Kernel of the pdf of the associated symmetrical distribution by means of which the IGTD is obtained. |
nu |
Additional parameter of the IGTD when the t kernel is used. |
Víctor Leiva <victor.leiva@uv.cl>, Hugo Hernández <hugo.hernandez@msn.com>, and Antonio Sanhueza <asanhue@ufro.cl>.
Sanhueza, A., Leiva, V. and Balakrishnan, N. (2007). A new class of inverse Gaussian type distributions. Metrika (in press).