caseweightIF

Returns \(IF(y_i) = -\hat{J}^{-1} \psi(\hat{par}; y_i)\) (the Hampel
object built from the score value \(\psi\)), reusing the
Jacobian \(\hat{J}\) formed by <code>implicitIF</code>. This is the
right object for robustness quantities (gross-error sensitivity,
breakdown), distinct from the local-shift sensitivity returned by
<code>implicitIF</code> for a redescending \(\psi\).

Implements the Robust Scoring Equations estimator to fit linear
mixed effects models robustly.
Robustness is achieved by modification of the scoring equations
combined with the Design Adaptive Scale approach.

Manuel Koller

robustlmm

Robust Linear Mixed Effects Models

caseweightIF function

<dl><dt>fit</dt>
<dd>An <code>rlmerMod</code> object.</dd>
<dt>idx</dt>
<dd>Optional integer indices selecting observations to compute
(default: all observations).</dd>
<dt>use.expected</dt>
<dd>Passed to <code>implicitIF</code>; default
<code>FALSE</code> (empirical Jacobian).</dd></dl>

Arguments

Case-weight (Hampel) influence function of the fixed effects of a
fitted rlmerMod object. — caseweightIF

<dl>

<dt>fit</dt>
<dd>An <code>rlmerMod</code> object.</dd>


<dt>idx</dt>
<dd>Optional integer indices selecting observations to compute
(default: all observations).</dd>


<dt>use.expected</dt>
<dd>Passed to <code>implicitIF</code>; default
<code>FALSE</code> (empirical Jacobian).</dd>

</dl>

caseweightIF: Case-weight (Hampel) influence function of the fixed effects of a fitted `rlmerMod` object.

Description

Usage

Value

Arguments

Details

See Also