hh: Herfindahl–Hirschman concentration index

In politicsR: Calculating Political System Metrics

Herfindahl–Hirschman concentration index

Description

'hh()' calculates the Herfindahl–Hirschman concentration index.

Usage

hh(x)

Arguments

x	(numeric). A numeric vector in the form of a proportion of votes or seats. The vector should range from 0 to 1.

Value

The result of the index is a value between 0 and 1. The closer to zero, the lower the concentration; the closer to 1, the higher the concentration.

References

Hirschmaņ, Albert O. (1945). National Power and Structure of Foreign Trade, Berkley: Univ of California Press.

Herfindahl, Orris C. (1950). Concentration in the us steel industry. Unpublished PhD. Dissertation, Columbia University.

Examples

hh(c(0.2, 0.3, 0.5))

politicsR documentation built on March 31, 2023, 10:10 p.m.