mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-27 14:28:56 +00:00
18046e0224
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@325489 c90b9560-bf6c-de11-be94-00142212c4b1
92 lines
2.7 KiB
XML
92 lines
2.7 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
|
|
<!-- $Revision$ -->
|
|
|
|
<refentry xml:id="svmmodel.predict-probability" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
|
|
<refnamediv>
|
|
<refname>SVMModel::predict_probability</refname>
|
|
<refpurpose>Return class probabilities for previous unseen data</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsect1 role="description">
|
|
&reftitle.description;
|
|
<methodsynopsis>
|
|
<modifier>public</modifier> <type>float</type><methodname>SVMModel::predict_probability</methodname>
|
|
<methodparam><type>array</type><parameter>data</parameter></methodparam>
|
|
</methodsynopsis>
|
|
<para>
|
|
This function accepts an array of data and attempts to predict the class, as with the predict function.
|
|
Additionally, however, this function returns an array of probabilities, one per class in the model, which
|
|
represent the estimated chance of the data supplied being a member of that class. Requires that the model
|
|
to be used has been trained with the probability parameter set to true.
|
|
</para>
|
|
|
|
</refsect1>
|
|
|
|
<refsect1 role="parameters">
|
|
&reftitle.parameters;
|
|
<para>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><parameter>data</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The array to be classified. This should be a series of key => value
|
|
pairs in increasing key order, but not necessarily continuous.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>probabilities</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The supplied value will be filled with the probabilities. This will be either null, in the case
|
|
of a model without probability information, or an array where the index is the class name and the value
|
|
the predicted probability.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1 role="returnvalues">
|
|
&reftitle.returnvalues;
|
|
<para>
|
|
Float the predicted value. This will be a class label in the case of
|
|
classification, a real value in the case of regression.
|
|
Throws SVMException on error
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1 role="seealso">
|
|
&reftitle.seealso;
|
|
<para>
|
|
<simplelist>
|
|
<member><methodname>SVM::predict</methodname></member>
|
|
</simplelist>
|
|
</para>
|
|
</refsect1>
|
|
|
|
|
|
</refentry>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
indent-tabs-mode:nil
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
vim600: syn=xml fen fdm=syntax fdl=2 si
|
|
vim: et tw=78 syn=sgml
|
|
vi: ts=1 sw=1
|
|
-->
|