Description Usage Arguments Details Value Author(s) Examples
Second partial derivative of the log partial likelihood with respect to the linear predictor.
1 | ddlpl(b, X, Ri, Ci)
|
b |
vector of regression coefficients. |
X |
design matrix. |
Ri |
list of length |
Ci |
list of length |
This function calculates the second partial derivative of the log partial likelihood.
A vector with second gradients.
Holger Reulen
1 | ## Not run: ddlpl(b, X, Ri, Ci)
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