ppcor: An R Package for a Fast Calculation to Semi-partial Correlation Coefficients

- Journal title : Communications for Statistical Applications and Methods
- Volume 22, Issue 6, 2015, pp.665-674
- Publisher : The Korean Statistical Society
- DOI : 10.5351/CSAM.2015.22.6.665

Title & Authors

ppcor: An R Package for a Fast Calculation to Semi-partial Correlation Coefficients

Kim, Seongho;

Kim, Seongho;

Abstract

Lack of a general matrix formula hampers implementation of the semi-partial correlation, also known as part correlation, to the higher-order coefficient. This is because the higher-order semi-partial correlation calculation using a recursive formula requires an enormous number of recursive calculations to obtain the correlation coefficients. To resolve this difficulty, we derive a general matrix formula of the semi-partial correlation for fast computation. The semi-partial correlations are then implemented on an R package ppcor along with the partial correlation. Owing to the general matrix formulas, users can readily calculate the coefficients of both partial and semi-partial correlations without computational burden. The package ppcor further provides users with the level of the statistical significance with its test statistic.

Keywords

correlation;partial correlation;part correlation;ppcor;semi-partial correlation;

Language

English

Cited by

2.

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