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| <div class="subTitle">org.apache.mahout.classifier</div> |
| <h2 title="Class ConfusionMatrix" class="title">Class ConfusionMatrix</h2> |
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| <pre>public class <span class="typeNameLabel">ConfusionMatrix</span> |
| extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">The ConfusionMatrix Class stores the result of Classification of a Test Dataset. |
| |
| The fact of whether there is a default is not stored. A row of zeros is the only indicator that there is no default. |
| |
| See http://en.wikipedia.org/wiki/Confusion_matrix for background</div> |
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| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#ConfusionMatrix-java.util.Collection-java.lang.String-">ConfusionMatrix</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>> labels, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> defaultLabel)</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#ConfusionMatrix-org.apache.mahout.math.Matrix-">ConfusionMatrix</a></span>(<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Matrix.html?is-external=true" title="class or interface in org.apache.mahout.math">Matrix</a> m)</code> </td> |
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| <h3>Method Summary</h3> |
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| <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="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete 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>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#addInstance-java.lang.String-org.apache.mahout.classifier.ClassifierResult-">addInstance</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> correctLabel, |
| <a href="../../../../org/apache/mahout/classifier/ClassifierResult.html" title="class in org.apache.mahout.classifier">ClassifierResult</a> classifiedResult)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#addInstance-java.lang.String-java.lang.String-">addInstance</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> correctLabel, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> classifiedLabel)</code> </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/classifier/ConfusionMatrix.html#getAccuracy--">getAccuracy</a></span>()</code> </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/classifier/ConfusionMatrix.html#getAccuracy-java.lang.String-">getAccuracy</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label)</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>int[][]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getConfusionMatrix--">getConfusionMatrix</a></span>()</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getCorrect-java.lang.String-">getCorrect</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label)</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getCount-java.lang.String-java.lang.String-">getCount</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> correctLabel, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> classifiedLabel)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getDefaultLabel--">getDefaultLabel</a></span>()</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getF1score-java.lang.String-">getF1score</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label)</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getKappa--">getKappa</a></span>()</code> |
| <div class="block">Accuracy v.s.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getLabels--">getLabels</a></span>()</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Matrix.html?is-external=true" title="class or interface in org.apache.mahout.math">Matrix</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getMatrix--">getMatrix</a></span>()</code> </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/mahout/cf/taste/impl/common/RunningAverageAndStdDev.html" title="interface in org.apache.mahout.cf.taste.impl.common">RunningAverageAndStdDev</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getNormalizedStats--">getNormalizedStats</a></span>()</code> |
| <div class="block">Standard deviation of normalized producer accuracy |
| Not a standard score</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getPrecision-java.lang.String-">getPrecision</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label)</code> </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getRecall-java.lang.String-">getRecall</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label)</code> </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getReliability--">getReliability</a></span>()</code> </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getTotal-java.lang.String-">getTotal</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label)</code> </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getWeightedF1score--">getWeightedF1score</a></span>()</code> </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getWeightedPrecision--">getWeightedPrecision</a></span>()</code> </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>double</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#getWeightedRecall--">getWeightedRecall</a></span>()</code> </td> |
| </tr> |
| <tr id="i20" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#incrementCount-java.lang.String-java.lang.String-">incrementCount</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> correctLabel, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> classifiedLabel)</code> </td> |
| </tr> |
| <tr id="i21" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#incrementCount-java.lang.String-java.lang.String-int-">incrementCount</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> correctLabel, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> classifiedLabel, |
| int count)</code> </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html" title="class in org.apache.mahout.classifier">ConfusionMatrix</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#merge-org.apache.mahout.classifier.ConfusionMatrix-">merge</a></span>(<a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html" title="class in org.apache.mahout.classifier">ConfusionMatrix</a> b)</code> </td> |
| </tr> |
| <tr id="i23" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#putCount-java.lang.String-java.lang.String-int-">putCount</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> correctLabel, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> classifiedLabel, |
| int count)</code> </td> |
| </tr> |
| <tr id="i24" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#setMatrix-org.apache.mahout.math.Matrix-">setMatrix</a></span>(<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Matrix.html?is-external=true" title="class or interface in org.apache.mahout.math">Matrix</a> m)</code> </td> |
| </tr> |
| <tr id="i25" class="rowColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/mahout/classifier/ConfusionMatrix.html#toString--">toString</a></span>()</code> |
| <div class="block">This is overloaded.</div> |
| </td> |
| </tr> |
| </table> |
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| <h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
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| </li> |
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| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a name="ConfusionMatrix-java.util.Collection-java.lang.String-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>ConfusionMatrix</h4> |
| <pre>public ConfusionMatrix(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>> labels, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> defaultLabel)</pre> |
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| <pre>public ConfusionMatrix(<a href="http://mahout.apache.org/mahout-math/apidocs/org/apache/mahout/math/Matrix.html?is-external=true" title="class or interface in org.apache.mahout.math">Matrix</a> m)</pre> |
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| <pre>public int[][] getConfusionMatrix()</pre> |
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| <pre>public double getAccuracy(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label)</pre> |
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| <pre>public double getAccuracy()</pre> |
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| <pre>public double getRecall(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label)</pre> |
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| <pre>public double getF1score(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> label)</pre> |
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| <pre>public double getKappa()</pre> |
| <div class="block">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. |
| |
| Formula and variable names from: |
| http://www.yale.edu/ceo/OEFS/Accuracy.pdf</div> |
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| <dd>double</dd> |
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| <div class="block">Standard deviation of normalized producer accuracy |
| Not a standard score</div> |
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| <a href="../../../../org/apache/mahout/classifier/ClassifierResult.html" title="class in org.apache.mahout.classifier">ClassifierResult</a> classifiedResult)</pre> |
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| <div class="block">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</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> |
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