EVOLUTION-MANAGER
Edit File: Initialize.reStruct.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Initialize reStruct Object</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for Initialize.reStruct {nlme}"><tr><td>Initialize.reStruct {nlme}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Initialize reStruct Object</h2> <h3>Description</h3> <p>Initial estimates for the parameters in the <code>pdMat</code> objects forming <code>object</code>, which have not yet been initialized, are obtained using the methodology described in Bates and Pinheiro (1998). These estimates may be refined using a series of EM iterations, as described in Bates and Pinheiro (1998). The number of EM iterations to be used is defined in <code>control</code>. </p> <h3>Usage</h3> <pre> ## S3 method for class 'reStruct' Initialize(object, data, conLin, control, ...) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>object</code></td> <td> <p>an object inheriting from class <code>"<a href="reStruct.html">reStruct</a>"</code>, representing a random effects structure and consisting of a list of <code>pdMat</code> objects.</p> </td></tr> <tr valign="top"><td><code>data</code></td> <td> <p>a data frame in which to evaluate the variables defined in <code>formula(object)</code>.</p> </td></tr> <tr valign="top"><td><code>conLin</code></td> <td> <p>a condensed linear model object, consisting of a list with components <code>"Xy"</code>, corresponding to a regression matrix (<code>X</code>) combined with a response vector (<code>y</code>), and <code>"logLik"</code>, corresponding to the log-likelihood of the underlying model.</p> </td></tr> <tr valign="top"><td><code>control</code></td> <td> <p>an optional list with a single component <code>niterEM</code> controlling the number of iterations for the EM algorithm used to refine initial parameter estimates. It is given as a list for compatibility with other <code>Initialize</code> methods. Defaults to <code>list(niterEM = 20)</code>.</p> </td></tr> <tr valign="top"><td><code>...</code></td> <td> <p>some methods for this generic require additional arguments. None are used in this method.</p> </td></tr> </table> <h3>Value</h3> <p>an <code>reStruct</code> object similar to <code>object</code>, but with all <code>pdMat</code> components initialized. </p> <h3>Author(s)</h3> <p>José Pinheiro and Douglas Bates <a href="mailto:bates@stat.wisc.edu">bates@stat.wisc.edu</a></p> <h3>See Also</h3> <p><code><a href="reStruct.html">reStruct</a></code>, <code><a href="pdMat.html">pdMat</a></code>, <code><a href="Initialize.html">Initialize</a></code> </p> <hr /><div style="text-align: center;">[Package <em>nlme</em> version 3.1-139 <a href="00Index.html">Index</a>]</div> </body></html>