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<h1>ConfusionMatrix</h1>
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<div id="comment" class="fullcommenttop"><div class="comment cmt"><p>Ported from org.apache.mahout.classifier.ConfusionMatrix.java</p><p>The ConfusionMatrix Class stores the result of Classification of a Test Dataset.</p><p>The fact of whether there is a default is not stored. A row of zeros is the only indicator that there is no default.</p><p>See http://en.wikipedia.org/wiki/Confusion_matrix for background</p></div><div class="toggleContainer block">
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<p class="shortcomment cmt"></p><div class="fullcomment"><div class="comment cmt"></div><dl class="paramcmts block"><dt class="param">labels</dt><dd class="cmt"><p>The labels to consider for classification</p></dd><dt class="param">defaultLabel</dt><dd class="cmt"><p>default unknown label
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<p class="shortcomment cmt">Matrix Constructor
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<p class="shortcomment cmt">Accuracy v.</p><div class="fullcomment"><div class="comment cmt"><p>Accuracy v.s. randomly classifying all samples.
kappa() = (totalAccuracy() - randomAccuracy()) / (1 - randomAccuracy())
Cohen, Jacob. 1960. A coefficient of agreement for nominal scales.
Educational And Psychological Measurement 20:37-46.</p><p>Formula and variable names from:
http://www.yale.edu/ceo/OEFS/Accuracy.pdf
</p></div><dl class="paramcmts block"><dt>returns</dt><dd class="cmt"><p>double
</p></dd></dl></div>
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</h4>
<p class="shortcomment cmt">Standard deviation of normalized producer accuracy
Not a standard score</p><div class="fullcomment"><div class="comment cmt"><p>Standard deviation of normalized producer accuracy
Not a standard score</p></div><dl class="paramcmts block"><dt>returns</dt><dd class="cmt"><p>double
</p></dd></dl></div>
</li><li name="org.apache.mahout.classifier.stats.ConfusionMatrix#getPrecision" visbl="pub" data-isabs="false" fullComment="no" group="Ungrouped">
<a id="getPrecision(label:String):Double"></a>
<a id="getPrecision(String):Double"></a>
<h4 class="signature">
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<span class="modifier"></span>
<span class="kind">def</span>
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</h4>
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<a id="getRecall(label:String):Double"></a>
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<h4 class="signature">
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</h4>
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<span class="modifier"></span>
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<span class="name">getReliability</span><span class="result">: <span class="extype" name="scala.Double">Double</span></span>
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</h4>
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</h4>
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<span class="kind">def</span>
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<span class="modifier"></span>
<span class="kind">val</span>
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</h4>
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<a id="merge(b:org.apache.mahout.classifier.stats.ConfusionMatrix):org.apache.mahout.classifier.stats.ConfusionMatrix"></a>
<a id="merge(ConfusionMatrix):ConfusionMatrix"></a>
<h4 class="signature">
<span class="modifier_kind">
<span class="modifier"></span>
<span class="kind">def</span>
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<span class="symbol">
<span class="name">merge</span><span class="params">(<span name="b">b: <a href="" class="extype" name="org.apache.mahout.classifier.stats.ConfusionMatrix">ConfusionMatrix</a></span>)</span><span class="result">: <a href="" class="extype" name="org.apache.mahout.classifier.stats.ConfusionMatrix">ConfusionMatrix</a></span>
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<span class="name">notify</span><span class="params">()</span><span class="result">: <span class="extype" name="scala.Unit">Unit</span></span>
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<span class="modifier">final </span>
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<span class="symbol">
<span class="name">notifyAll</span><span class="params">()</span><span class="result">: <span class="extype" name="scala.Unit">Unit</span></span>
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</li><li name="org.apache.mahout.classifier.stats.ConfusionMatrix#numLabels" visbl="pub" data-isabs="false" fullComment="no" group="Ungrouped">
<a id="numLabels:Int"></a>
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<span class="modifier_kind">
<span class="modifier"></span>
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<span class="symbol">
<span class="name">numLabels</span><span class="result">: <span class="extype" name="scala.Int">Int</span></span>
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</h4>
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<a id="putCount(correctLabel:String,classifiedLabel:String,count:Int):Unit"></a>
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<h4 class="signature">
<span class="modifier_kind">
<span class="modifier"></span>
<span class="kind">def</span>
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<span class="symbol">
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<a id="samples:Int"></a>
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<span class="name">samples</span><span class="result">: <span class="extype" name="scala.Int">Int</span></span>
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<a id="setMatrix(m:org.apache.mahout.math.Matrix):Unit"></a>
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<span class="modifier"></span>
<span class="kind">def</span>
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<span class="symbol">
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<span class="kind">def</span>
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</span>
</h4>
<p class="shortcomment cmt">This is overloaded.</p><div class="fullcomment"><div class="comment cmt"><p>This is overloaded. toString() is not a formatted report you print for a manager :)
Assume that if there are no default assignments, the default feature was not used
</p></div><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.mahout.classifier.stats.ConfusionMatrix">ConfusionMatrix</a> → AnyRef → Any</dd></dl></div>
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