squareTheta

Calculations quadratic form of theta with diagonalized variational parameter in the center.

A method for performing joint registration and functional principal
component analysis for curves (functional data) that are generated from exponential family distributions. This
mainly implements the algorithms described in 'Wrobel et al. (2019)' <doi:10.1111/biom.12963> and further adapts them to potentially
incomplete curves where (some) curves are not observed from the beginning and/or until the end of the common domain. Curve registration
can be used to better understand patterns in functional data by separating curves into phase and amplitude variability.
This software handles both binary and continuous functional data, and is
especially applicable in accelerometry and wearable technology.

Julia Wrobel

registr

Curve Registration for Exponential Family Functional Data

Alexander Bauer

Erin McDonnell

Fabian Scheipl

Jeff Goldsmith

squareTheta function

<dl><dt>xi</dt>
<dd>vector of variational parameters for the current subject.</dd>
<dt>theta</dt>
<dd>spline basis functions for the current subject.</dd></dl>

Arguments

Calculate quadratic form of spline basis functions for the current subject. — squareTheta

<dl>

<dt>xi</dt>
<dd>vector of variational parameters for the current subject.</dd>


<dt>theta</dt>
<dd>spline basis functions for the current subject.</dd>

</dl>

squareTheta: Calculate quadratic form of spline basis functions for the current subject.

Description

Usage

Value

Arguments