pref_type

Ordinal preferences can order every item, or they can order a subset. Some
ordinal preference datasets will contain ties between items at a given rank.
Hence, there are four distinct types of preferential data:<dl>
<dt><code>soc</code></dt>
<dd>Strict Orders - Complete List</dd><dt><code>soi</code></dt>
<dd>Strict Orders - Incomplete List</dd><dt><code>toc</code></dt>
<dd>Orders with Ties - Complete List</dd><dt><code>toi</code></dt>
<dd>Orders with Ties - Incomplete List</dd>
</dl>

Convenient structures for creating, sourcing, reading, writing
and manipulating ordinal preference data. Methods for writing to/from PrefLib
formats. See Nicholas Mattei and Toby Walsh "PrefLib: A Library of Preference
Data" (2013) <doi:10.1007/978-3-642-41575-3_20>.

Floyd Everest

prefio

Structures for Preference Data

Heather Turner

Damjan Vukcevic

pref_type function

<dl><dt>x</dt>
<dd>A <code>preferences</code> object (or vector data representing preferences)</dd>
<dt>n_items</dt>
<dd>The number of items, needed to assess whether a selection is
complete or not. Defaults to <code>nlevels(x)</code> if <code>x</code> has class <code>preferences</code>,
otherwise defaults to the length of the longest preference.</dd></dl>

Arguments

Ordinal preferences can order every item, or they can order a subset. Some
ordinal preference datasets will contain ties between items at a given rank.
Hence, there are four distinct types of preferential data:<dl>
<dt><code>soc</code></dt>
<dd>Strict Orders - Complete List</dd>

<dt><code>soi</code></dt>
<dd>Strict Orders - Incomplete List</dd>

<dt><code>toc</code></dt>
<dd>Orders with Ties - Complete List</dd>

<dt><code>toi</code></dt>
<dd>Orders with Ties - Incomplete List</dd>


</dl>

pref_type — pref_type

<dl>

<dt>x</dt>
<dd>A <code>preferences</code> object (or vector data representing preferences)</dd>


<dt>n_items</dt>
<dd>The number of items, needed to assess whether a selection is
complete or not. Defaults to <code>nlevels(x)</code> if <code>x</code> has class <code>preferences</code>,
otherwise defaults to the length of the longest preference.</dd>

</dl>

pref_type: pref_type

Description

Usage

Value

Arguments