FIM_power_logistic {ICAOD}

Fisher Information Matrix for the Power Logistic Model

Description

It provides the cpp function for FIM for the model ~1/(1 + exp(-b *(x - a)))^s, but when s is fixed (a two by two matrix).

Usage

FIM_power_logistic(x, w, param, s)

Arguments

x

Vector of design points.

w

Vector of design weight. Its length must be equal to the length of x and sum(w) = 1.

param

Vector of values for the model parameters c(a, b).

s

parameter s.

Value

Fisher information matrix.

Note

This matrix is a two by two matrix and not equal to the Fisher information matrix for the power logistic model when the derivative is taken with respect to all the three parameters. This matrix is only given to be used in some illustrative examples.