Description Usage Arguments Value Author(s)
Function to calculate derivative
1 | ub_add(data_order, z_mat, beta0, u, be)
|
data_order |
dataset ordered by observed time |
z_mat |
covariate matrix |
beta0 |
parameter coefficients |
u |
uth number of parameters |
be |
bth number of parameters |
derivative of dudb
Peng Jin and Mengling Liu
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