<!-- pkgdown --><script src="../pkgdown.js"></script><meta property="og:title" content="General Classes of Influence Measures — Jfuns"><meta name="description" content="These functions implement the general classes of influence measures
for multivariate regression models defined in Barrett and Ling (1992),
Eqn 2.3, 2.4, as shown in their Table 1.
They are defined in terms of the submatrices for a deleted index subset \(I\)
$$H_I = X_I (X^T X)^{-1} X_I$$
$$Q_I = E_I (E^T E)^{-1} E_I$$
corresponding to the 