acid (version 1.1)

weighted.entropy: Measures of the Generalised Entropy Family

Description

This function computes the Measures of the Generalised Entropy Family for a vector of observations with corresponding weights.

Usage

weighted.entropy(x, w = NULL, alpha = 1)

Arguments

x

a vector of observations.

w

a vector of weights.

alpha

the parameter for the generalised entropy family of measures, denoted by alpha by Cowell (2000). Note that this parameter notation differs from the notation used in the ineq package.

Value

• returns the entropy measure.

References

Cowell, F.A. (2000): Measurement of Inequality, in: Atkinson and Bourguignon (eds.), Handbook of Income Distribution, pp. 1-86, Elsevier, Amsterdam.

See Also

ineq

Examples

# generate vector (of incomes)
x <- c(541, 1463, 2445, 3438, 4437, 5401, 6392, 8304, 11904, 22261)
w <- sample(1:2,length(x),replace=TRUE)
weighted.entropy(x,w)