| <!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 22:11:35 PDT 2017 --> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> |
| <title>IRStatistics (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="IRStatistics (Mahout Map-Reduce 0.13.0 API)"; |
| } |
| } |
| catch(err) { |
| } |
| //--> |
| var methods = {"i0":6,"i1":6,"i2":6,"i3":6,"i4":6,"i5":6,"i6":6}; |
| var tabs = {65535:["t0","All Methods"],2:["t2","Instance Methods"],4:["t3","Abstract Methods"]}; |
| var altColor = "altColor"; |
| var rowColor = "rowColor"; |
| var tableTab = "tableTab"; |
| var activeTableTab = "activeTableTab"; |
| </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><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/IRStatistics.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/eval/DataModelBuilder.html" title="interface in org.apache.mahout.cf.taste.eval"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../org/apache/mahout/cf/taste/eval/RecommenderBuilder.html" title="interface in org.apache.mahout.cf.taste.eval"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../index.html?org/apache/mahout/cf/taste/eval/IRStatistics.html" target="_top">Frames</a></li> |
| <li><a href="IRStatistics.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_top"> |
| <li><a href="../../../../../../allclasses-noframe.html">All 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> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.top"> |
| <!-- --> |
| </a></div> |
| <!-- ========= END OF TOP NAVBAR ========= --> |
| <!-- ======== START OF CLASS DATA ======== --> |
| <div class="header"> |
| <div class="subTitle">org.apache.mahout.cf.taste.eval</div> |
| <h2 title="Interface IRStatistics" class="title">Interface IRStatistics</h2> |
| </div> |
| <div class="contentContainer"> |
| <div class="description"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <dl> |
| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../../../../org/apache/mahout/cf/taste/impl/eval/IRStatisticsImpl.html" title="class in org.apache.mahout.cf.taste.impl.eval">IRStatisticsImpl</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public interface <span class="typeNameLabel">IRStatistics</span></pre> |
| <div class="block"><p> |
| Implementations encapsulate information retrieval-related statistics about a |
| <a href="../../../../../../org/apache/mahout/cf/taste/recommender/Recommender.html" title="interface in org.apache.mahout.cf.taste.recommender"><code>Recommender</code></a>'s recommendations. |
| </p> |
| |
| <p> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval">Information retrieval</a>. |
| </p></div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </a> |
| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/cf/taste/eval/IRStatistics.html#getF1Measure--">getF1Measure</a></span>()</code> |
| <div class="block"> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval#F-measure">F-measure</a>.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/cf/taste/eval/IRStatistics.html#getFallOut--">getFallOut</a></span>()</code> |
| <div class="block"> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval#Fall-Out">Fall-Out</a>.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/cf/taste/eval/IRStatistics.html#getFNMeasure-double-">getFNMeasure</a></span>(double n)</code> |
| <div class="block"> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval#F-measure">F-measure</a>.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/cf/taste/eval/IRStatistics.html#getNormalizedDiscountedCumulativeGain--">getNormalizedDiscountedCumulativeGain</a></span>()</code> |
| <div class="block"> |
| See <a href="http://en.wikipedia.org/wiki/Discounted_cumulative_gain#Normalized_DCG"> |
| Normalized Discounted Cumulative Gain</a>.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/cf/taste/eval/IRStatistics.html#getPrecision--">getPrecision</a></span>()</code> |
| <div class="block"> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval#Precision">Precision</a>.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/cf/taste/eval/IRStatistics.html#getReach--">getReach</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/cf/taste/eval/IRStatistics.html#getRecall--">getRecall</a></span>()</code> |
| <div class="block"> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval#Recall">Recall</a>.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.detail"> |
| <!-- --> |
| </a> |
| <h3>Method Detail</h3> |
| <a name="getPrecision--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getPrecision</h4> |
| <pre>double getPrecision()</pre> |
| <div class="block"><p> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval#Precision">Precision</a>. |
| </p></div> |
| </li> |
| </ul> |
| <a name="getRecall--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getRecall</h4> |
| <pre>double getRecall()</pre> |
| <div class="block"><p> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval#Recall">Recall</a>. |
| </p></div> |
| </li> |
| </ul> |
| <a name="getFallOut--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getFallOut</h4> |
| <pre>double getFallOut()</pre> |
| <div class="block"><p> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval#Fall-Out">Fall-Out</a>. |
| </p></div> |
| </li> |
| </ul> |
| <a name="getF1Measure--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getF1Measure</h4> |
| <pre>double getF1Measure()</pre> |
| <div class="block"><p> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval#F-measure">F-measure</a>. |
| </p></div> |
| </li> |
| </ul> |
| <a name="getFNMeasure-double-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getFNMeasure</h4> |
| <pre>double getFNMeasure(double n)</pre> |
| <div class="block"><p> |
| See <a href="http://en.wikipedia.org/wiki/Information_retrieval#F-measure">F-measure</a>. |
| </p></div> |
| </li> |
| </ul> |
| <a name="getNormalizedDiscountedCumulativeGain--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>getNormalizedDiscountedCumulativeGain</h4> |
| <pre>double getNormalizedDiscountedCumulativeGain()</pre> |
| <div class="block"><p> |
| See <a href="http://en.wikipedia.org/wiki/Discounted_cumulative_gain#Normalized_DCG"> |
| Normalized Discounted Cumulative Gain</a>. |
| </p></div> |
| </li> |
| </ul> |
| <a name="getReach--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>getReach</h4> |
| <pre>double getReach()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the fraction of all users for whom recommendations could be produced</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| </div> |
| <!-- ========= END OF CLASS DATA ========= --> |
| <!-- ======= 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><a href="package-summary.html">Package</a></li> |
| <li class="navBarCell1Rev">Class</li> |
| <li><a href="class-use/IRStatistics.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/eval/DataModelBuilder.html" title="interface in org.apache.mahout.cf.taste.eval"><span class="typeNameLink">Prev Class</span></a></li> |
| <li><a href="../../../../../../org/apache/mahout/cf/taste/eval/RecommenderBuilder.html" title="interface in org.apache.mahout.cf.taste.eval"><span class="typeNameLink">Next Class</span></a></li> |
| </ul> |
| <ul class="navList"> |
| <li><a href="../../../../../../index.html?org/apache/mahout/cf/taste/eval/IRStatistics.html" target="_top">Frames</a></li> |
| <li><a href="IRStatistics.html" target="_top">No Frames</a></li> |
| </ul> |
| <ul class="navList" id="allclasses_navbar_bottom"> |
| <li><a href="../../../../../../allclasses-noframe.html">All 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> |
| <div> |
| <ul class="subNavList"> |
| <li>Summary: </li> |
| <li>Nested | </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.summary">Method</a></li> |
| </ul> |
| <ul class="subNavList"> |
| <li>Detail: </li> |
| <li>Field | </li> |
| <li>Constr | </li> |
| <li><a href="#method.detail">Method</a></li> |
| </ul> |
| </div> |
| <a name="skip.navbar.bottom"> |
| <!-- --> |
| </a></div> |
| <!-- ======== END OF BOTTOM NAVBAR ======= --> |
| <p class="legalCopy"><small>Copyright © 2008–2017 <a href="http://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p> |
| </body> |
| </html> |