addbounds

Adds <code>q - 1</code> boundaries between the <code>q</code> ratings to the columns of
matrix <code>x</code>, and convert the rows to rankings, starting with 0 for the
lowest ranking. Ties are handled by averaging the total rank for all 
tied observations.

This is an implementation of constrained dual scaling for
detecting response styles in categorical data, including utility functions. The
procedure involves adding additional columns to the data matrix representing the
boundaries between the rating categories. The resulting matrix is then doubled
and analyzed by dual scaling. One-dimensional solutions are sought which provide
optimal scores for the rating categories. These optimal scores are constrained
to follow monotone quadratic splines. Clusters are introduced within which the
response styles can vary. The type of response style present in a cluster can
be diagnosed from the optimal scores for said cluster, and this can be used to
construct an imputed version of the data set which adjusts for response styles.

Pieter Schoonees

Constrained Dual Scaling for Detecting Response Styles

addbounds function

<dl><dt>x</dt>
<dd>matrix (or data frame) of <code>n</code> rows and <code>m</code> columns, or an
object that can be coerced to a matrix via <code><a href="/link/as.matrix?package=cds&version=1.0.4" data-mini-rdoc="cds::as.matrix">as.matrix</a></code>.</dd>
<dt>q</dt>
<dd>scalar; the number of rating scale categories. Defaults to the
maximum entry in <code>x</code>.</dd>
<dt>ties</dt>
<dd>character; handling of ties in <code>rank</code></dd></dl>

Arguments

Author

Augment with Boundaries Between Rating Scale Categories and Rank — addbounds

<dl>

<dt>x</dt>
<dd>matrix (or data frame) of <code>n</code> rows and <code>m</code> columns, or an
object that can be coerced to a matrix via <code><a href='https://rdrr.io/r/base/matrix.html'>as.matrix</a></code>.</dd>


<dt>q</dt>
<dd>scalar; the number of rating scale categories. Defaults to the
maximum entry in <code>x</code>.</dd>


<dt>ties</dt>
<dd>character; handling of ties in <code>rank</code></dd>

</dl>

addbounds: Augment with Boundaries Between Rating Scale Categories and Rank

Description

Usage

Value

Arguments

Author

Details

Examples