Google Git
Sign in
apache / mahout / master / . / docs / 0.13.0 / api / docs / mahout-mr / org / apache / mahout / cf / taste / impl / eval / package-summary.html
blob: aebb85f3f58747c27417bbc8a5ddf9ff534e35d2 [file] [log] [blame]
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!-- NewPage -->
<html lang="en">
<head>
<!-- Generated by javadoc (1.8.0_121) on Fri Apr 14 22:11:37 PDT 2017 -->
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>org.apache.mahout.cf.taste.impl.eval (Mahout Map-Reduce 0.13.0 API)</title>
<meta name="date" content="2017-04-14">
<link rel="stylesheet" type="text/css" href="../../../../../../../stylesheet.css" title="Style">
<script type="text/javascript" src="../../../../../../../script.js"></script>
</head>
<body>
<script type="text/javascript"><!--
try {
if (location.href.indexOf('is-external=true') == -1) {
parent.document.title="org.apache.mahout.cf.taste.impl.eval (Mahout Map-Reduce 0.13.0 API)";
}
}
catch(err) {
}
//-->
</script>
<noscript>
<div>JavaScript is disabled on your browser.</div>
</noscript>
<!-- ========= START OF TOP NAVBAR ======= -->
<div class="topNav"><a name="navbar.top">
<!-- -->
</a>
<div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div>
<a name="navbar.top.firstrow">
<!-- -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../../../../../overview-summary.html">Overview</a></li>
<li class="navBarCell1Rev">Package</li>
<li>Class</li>
<li><a href="package-use.html">Use</a></li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../../../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../../../../../index-all.html">Index</a></li>
<li><a href="../../../../../../../help-doc.html">Help</a></li>
</ul>
</div>
<div class="subNav">
<ul class="navList">
<li><a href="../../../../../../../org/apache/mahout/cf/taste/impl/common/jdbc/package-summary.html">Prev&nbsp;Package</a></li>
<li><a href="../../../../../../../org/apache/mahout/cf/taste/impl/model/package-summary.html">Next&nbsp;Package</a></li>
</ul>
<ul class="navList">
<li><a href="../../../../../../../index.html?org/apache/mahout/cf/taste/impl/eval/package-summary.html" target="_top">Frames</a></li>
<li><a href="package-summary.html" target="_top">No&nbsp;Frames</a></li>
</ul>
<ul class="navList" id="allclasses_navbar_top">
<li><a href="../../../../../../../allclasses-noframe.html">All&nbsp;Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
allClassesLink = document.getElementById("allclasses_navbar_top");
if(window==top) {
allClassesLink.style.display = "block";
}
else {
allClassesLink.style.display = "none";
}
//-->
</script>
</div>
<a name="skip.navbar.top">
<!-- -->
</a></div>
<!-- ========= END OF TOP NAVBAR ========= -->
<div class="header">
<h1 title="Package" class="title">Package&nbsp;org.apache.mahout.cf.taste.impl.eval</h1>
</div>
<div class="contentContainer">
<ul class="blockList">
<li class="blockList">
<table class="typeSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation">
<caption><span>Class Summary</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/AbstractDifferenceRecommenderEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">AbstractDifferenceRecommenderEvaluator</a></td>
<td class="colLast">
<div class="block">Abstract superclass of a couple implementations, providing shared functionality.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/AverageAbsoluteDifferenceRecommenderEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">AverageAbsoluteDifferenceRecommenderEvaluator</a></td>
<td class="colLast">
<div class="block">
A <a href="../../../../../../../org/apache/mahout/cf/taste/eval/RecommenderEvaluator.html" title="interface in org.apache.mahout.cf.taste.eval"><code>RecommenderEvaluator</code></a> which computes the average absolute
difference between predicted and actual ratings for users.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/GenericRecommenderIRStatsEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">GenericRecommenderIRStatsEvaluator</a></td>
<td class="colLast">
<div class="block">
For each user, these implementation determine the top <code>n</code> preferences, then evaluate the IR
statistics based on a <a href="../../../../../../../org/apache/mahout/cf/taste/model/DataModel.html" title="interface in org.apache.mahout.cf.taste.model"><code>DataModel</code></a> that does not have these values.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/GenericRelevantItemsDataSplitter.html" title="class in org.apache.mahout.cf.taste.impl.eval">GenericRelevantItemsDataSplitter</a></td>
<td class="colLast">
<div class="block">Picks relevant items to be those with the strongest preference, and
includes the other users' preferences in full.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/IRStatisticsImpl.html" title="class in org.apache.mahout.cf.taste.impl.eval">IRStatisticsImpl</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/LoadEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">LoadEvaluator</a></td>
<td class="colLast">
<div class="block">Simple helper class for running load on a Recommender.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/LoadStatistics.html" title="class in org.apache.mahout.cf.taste.impl.eval">LoadStatistics</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/OrderBasedRecommenderEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">OrderBasedRecommenderEvaluator</a></td>
<td class="colLast">
<div class="block">Evaluate recommender by comparing order of all raw prefs with order in
recommender's output for that user.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="../../../../../../../org/apache/mahout/cf/taste/impl/eval/RMSRecommenderEvaluator.html" title="class in org.apache.mahout.cf.taste.impl.eval">RMSRecommenderEvaluator</a></td>
<td class="colLast">
<div class="block">
A <a href="../../../../../../../org/apache/mahout/cf/taste/eval/RecommenderEvaluator.html" title="interface in org.apache.mahout.cf.taste.eval"><code>RecommenderEvaluator</code></a> which computes the "root mean squared"
difference between predicted and actual ratings for users.</div>
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
<!-- ======= START OF BOTTOM NAVBAR ====== -->
<div class="bottomNav"><a name="navbar.bottom">
<!-- -->
</a>
<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div>
<a name="navbar.bottom.firstrow">
<!-- -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../../../../../overview-summary.html">Overview</a></li>
<li class="navBarCell1Rev">Package</li>
<li>Class</li>
<li><a href="package-use.html">Use</a></li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../../../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../../../../../index-all.html">Index</a></li>
<li><a href="../../../../../../../help-doc.html">Help</a></li>
</ul>
</div>
<div class="subNav">
<ul class="navList">
<li><a href="../../../../../../../org/apache/mahout/cf/taste/impl/common/jdbc/package-summary.html">Prev&nbsp;Package</a></li>
<li><a href="../../../../../../../org/apache/mahout/cf/taste/impl/model/package-summary.html">Next&nbsp;Package</a></li>
</ul>
<ul class="navList">
<li><a href="../../../../../../../index.html?org/apache/mahout/cf/taste/impl/eval/package-summary.html" target="_top">Frames</a></li>
<li><a href="package-summary.html" target="_top">No&nbsp;Frames</a></li>
</ul>
<ul class="navList" id="allclasses_navbar_bottom">
<li><a href="../../../../../../../allclasses-noframe.html">All&nbsp;Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
allClassesLink = document.getElementById("allclasses_navbar_bottom");
if(window==top) {
allClassesLink.style.display = "block";
}
else {
allClassesLink.style.display = "none";
}
//-->
</script>
</div>
<a name="skip.navbar.bottom">
<!-- -->
</a></div>
<!-- ======== END OF BOTTOM NAVBAR ======= -->
<p class="legalCopy"><small>Copyright &#169; 2008&#x2013;2017 <a href="http://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p>
</body>
</html>