hiperfrac {politicsR}

Hyperfractionalization Index

Description

'hiperfrac' calculates the hyperfractionalization index proposed by Kesselman (1966) and Wildgen (1971), which is useful for party system with many small parties.

Usage

hiperfrac(x)

Arguments

x

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

Details

This index places more weights to small parties compared to the Effective Number of Political Parties Index ('enp')

Value

A continued value, the larger the higher the fragmentation of the system

References

Kesselman, M. (1966). French Local Politics: A Statistical Examination of Grass Roots Consensus. American Political Science Review, 60(4), 963-973. doi:10.2307/1953769

Wildgen, J. K. (1971). The Measurement of Hyperfractionalization. Comparative Political Studies, 4(2), 233–243. https://doi.org/10.1177/001041407100400205

Examples

hiperfrac(c(0.1, 0.1, 0.05, 0.05, 0.01, 0.04, 0.65))