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| <h2 title="Class LogisticModelParameters" class="title">Class LogisticModelParameters</h2> |
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| <li>org.apache.mahout.classifier.sgd.LogisticModelParameters</li> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd>org.apache.hadoop.io.Writable</dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../org/apache/mahout/classifier/sgd/AdaptiveLogisticModelParameters.html" title="class in org.apache.mahout.classifier.sgd">AdaptiveLogisticModelParameters</a></dd> |
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| <br> |
| <pre>public class <span class="typeNameLabel">LogisticModelParameters</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> |
| implements org.apache.hadoop.io.Writable</pre> |
| <div class="block">Encapsulates everything we need to know about a model and how it reads and vectorizes its input. |
| This encapsulation allows us to coherently save and restore a model from a file. This also |
| allows us to keep command line arguments that affect learning in a coherent way.</div> |
| </li> |
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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/sgd/LogisticModelParameters.html#LogisticModelParameters--">LogisticModelParameters</a></span>()</code> </td> |
| </tr> |
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| <h3>Method Summary</h3> |
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| <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><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/classifier/sgd/OnlineLogisticRegression.html?is-external=true" title="class or interface in org.apache.mahout.classifier.sgd">OnlineLogisticRegression</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#createRegression--">createRegression</a></span>()</code> |
| <div class="block">Creates a logistic regression trainer using the parameters collected here.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/classifier/sgd/CsvRecordFactory.html?is-external=true" title="class or interface in org.apache.mahout.classifier.sgd">CsvRecordFactory</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#getCsvRecordFactory--">getCsvRecordFactory</a></span>()</code> |
| <div class="block">Returns a CsvRecordFactory compatible with this logistic model.</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/classifier/sgd/LogisticModelParameters.html#getLambda--">getLambda</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/sgd/LogisticModelParameters.html#getLearningRate--">getLearningRate</a></span>()</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/sgd/LogisticModelParameters.html#getMaxTargetCategories--">getMaxTargetCategories</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/sgd/LogisticModelParameters.html#getNumFeatures--">getNumFeatures</a></span>()</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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/sgd/LogisticModelParameters.html#getTargetCategories--">getTargetCategories</a></span>()</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/sgd/LogisticModelParameters.html#getTargetVariable--">getTargetVariable</a></span>()</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</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>,<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/sgd/LogisticModelParameters.html#getTypeMap--">getTypeMap</a></span>()</code> </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html" title="class in org.apache.mahout.classifier.sgd">LogisticModelParameters</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#loadFrom-java.io.File-">loadFrom</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> in)</code> |
| <div class="block">Reads a model from a file.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html" title="class in org.apache.mahout.classifier.sgd">LogisticModelParameters</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#loadFrom-java.io.InputStream-">loadFrom</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a> in)</code> |
| <div class="block">Reads a model from a stream.</div> |
| </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#readFields-java.io.DataInput-">readFields</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/DataInput.html?is-external=true" title="class or interface in java.io">DataInput</a> in)</code> </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#saveTo-java.io.OutputStream-">saveTo</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a> out)</code> |
| <div class="block">Saves a model to an output stream.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#setLambda-double-">setLambda</a></span>(double lambda)</code> </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#setLearningRate-double-">setLearningRate</a></span>(double learningRate)</code> </td> |
| </tr> |
| <tr id="i15" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#setMaxTargetCategories-int-">setMaxTargetCategories</a></span>(int maxTargetCategories)</code> |
| <div class="block">Sets the number of target categories to be considered.</div> |
| </td> |
| </tr> |
| <tr id="i16" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#setNumFeatures-int-">setNumFeatures</a></span>(int numFeatures)</code> </td> |
| </tr> |
| <tr id="i17" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#setTargetCategories-java.util.List-">setTargetCategories</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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>> targetCategories)</code> </td> |
| </tr> |
| <tr id="i18" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#setTargetVariable-java.lang.String-">setTargetVariable</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> targetVariable)</code> |
| <div class="block">Sets the target variable.</div> |
| </td> |
| </tr> |
| <tr id="i19" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#setTypeMap-java.lang.Iterable-java.util.List-">setTypeMap</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</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>> predictorList, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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>> typeList)</code> |
| <div class="block">Sets the types of the predictors.</div> |
| </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/sgd/LogisticModelParameters.html#setTypeMap-java.util.Map-">setTypeMap</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</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>,<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>> map)</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/sgd/LogisticModelParameters.html#setUseBias-boolean-">setUseBias</a></span>(boolean useBias)</code> </td> |
| </tr> |
| <tr id="i22" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html#useBias--">useBias</a></span>()</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/sgd/LogisticModelParameters.html#write-java.io.DataOutput-">write</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/DataOutput.html?is-external=true" title="class or interface in java.io">DataOutput</a> out)</code> </td> |
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| <pre>public LogisticModelParameters()</pre> |
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| <h4>getCsvRecordFactory</h4> |
| <pre>public <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/classifier/sgd/CsvRecordFactory.html?is-external=true" title="class or interface in org.apache.mahout.classifier.sgd">CsvRecordFactory</a> getCsvRecordFactory()</pre> |
| <div class="block">Returns a CsvRecordFactory compatible with this logistic model. The reason that this is tied |
| in here is so that we have access to the list of target categories when it comes time to save |
| the model. If the input isn't CSV, then calling setTargetCategories before calling saveTo will |
| suffice.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The CsvRecordFactory.</dd> |
| </dl> |
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| <pre>public <a href="http://mahout.apache.org/mahout-mr/apidocs/org/apache/mahout/classifier/sgd/OnlineLogisticRegression.html?is-external=true" title="class or interface in org.apache.mahout.classifier.sgd">OnlineLogisticRegression</a> createRegression()</pre> |
| <div class="block">Creates a logistic regression trainer using the parameters collected here.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>The newly allocated OnlineLogisticRegression object</dd> |
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| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Saves a model to an output stream.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <pre>public static <a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html" title="class in org.apache.mahout.classifier.sgd">LogisticModelParameters</a> loadFrom(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a> in) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Reads a model from a stream.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <pre>public static <a href="../../../../../org/apache/mahout/classifier/sgd/LogisticModelParameters.html" title="class in org.apache.mahout.classifier.sgd">LogisticModelParameters</a> loadFrom(<a href="http://docs.oracle.com/javase/7/docs/api/java/io/File.html?is-external=true" title="class or interface in java.io">File</a> in) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Reads a model from a file.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - If there is an error opening or closing the file.</dd> |
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| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>write</code> in interface <code>org.apache.hadoop.io.Writable</code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>readFields</code> in interface <code>org.apache.hadoop.io.Writable</code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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>> typeList)</pre> |
| <div class="block">Sets the types of the predictors. This will later be used when reading CSV data. If you don't |
| use the CSV data and convert to vectors on your own, you don't need to call this.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>predictorList</code> - The list of variable names.</dd> |
| <dd><code>typeList</code> - The list of types in the format preferred by CsvRecordFactory.</dd> |
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| <div class="block">Sets the target variable. If you don't use the CSV record factory, then this is irrelevant.</div> |
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| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>targetVariable</code> - The name of the target variable.</dd> |
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| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>maxTargetCategories</code> - The number of target categories.</dd> |
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