representation of a mortality hazard function
the hazard's name
the number of parameters the hazard uses
default values for the parameters
if not NULL, a function which takes a mortalityData object and returns starting values to be used in a numerical optimization routine
if not NULL, a function which takes a parametr vector and a mortalityData object and returns the gradient of the binomial log-likelihood. Used in some numerical optimization routines
if not NULL, a list with one entry for each parameter. Each parameter's entry has a range of plausible values for the parameter, which can be used if an optimization routine wants to choose a random starting value
default settings to use with R's optim
function
a function which takes two arguments, a vector of parameter values and a vector of ages, and returns the value of the hazard function with the given parameter values at each age.
if not NULL a function which takes two arguments, a vector of parameter values and a vector of ages, and returns the value of exp(-\int_{z}^{z+1} -μ(x)dx), ie the result of converting the hazard to conditional probabilities of dying between ages z and z+1 for each age z.
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