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| <h2 title="Class VectorAttributeRewriter" class="title">Class VectorAttributeRewriter</h2> |
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| <ul class="inheritance"> |
| <li>Object</li> |
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| <li> |
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| <li>org.apache.spark.ml.feature.VectorAttributeRewriter</li> |
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| <pre>public class <span class="typeNameLabel">VectorAttributeRewriter</span> |
| extends <a href="../../../../../org/apache/spark/ml/Transformer.html" title="class in org.apache.spark.ml">Transformer</a> |
| implements <a href="../../../../../org/apache/spark/ml/util/MLWritable.html" title="interface in org.apache.spark.ml.util">MLWritable</a></pre> |
| <div class="block">Utility transformer that rewrites Vector attribute names via prefix replacement. For example, |
| it can rewrite attribute names starting with 'foo_' to start with 'bar_' instead. |
| <p> |
| param: vectorCol name of the vector column to rewrite. |
| param: prefixesToRewrite the map of string prefixes to their replacement values. Each attribute |
| name defined in vectorCol will be checked against the keys of this |
| map. When a key prefixes a name, the matching prefix will be replaced |
| by the value in the map.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../serialized-form.html#org.apache.spark.ml.feature.VectorAttributeRewriter">Serialized Form</a></dd> |
| </dl> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#VectorAttributeRewriter-java.lang.String-scala.collection.immutable.Map-">VectorAttributeRewriter</a></span>(String vectorCol, |
| scala.collection.immutable.Map<String,String> prefixesToRewrite)</code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#VectorAttributeRewriter-java.lang.String-java.lang.String-scala.collection.immutable.Map-">VectorAttributeRewriter</a></span>(String uid, |
| String vectorCol, |
| scala.collection.immutable.Map<String,String> prefixesToRewrite)</code> </td> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html" title="class in org.apache.spark.ml.feature">VectorAttributeRewriter</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#copy-org.apache.spark.ml.param.ParamMap-">copy</a></span>(<a href="../../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a> extra)</code> |
| <div class="block">Creates a copy of this instance with the same UID and some extra params.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html" title="class in org.apache.spark.ml.feature">VectorAttributeRewriter</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#load-java.lang.String-">load</a></span>(String path)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>scala.collection.immutable.Map<String,String></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#prefixesToRewrite--">prefixesToRewrite</a></span>()</code> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/spark/ml/util/MLReader.html" title="class in org.apache.spark.ml.util">MLReader</a><<a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html" title="class in org.apache.spark.ml.feature">VectorAttributeRewriter</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#read--">read</a></span>()</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/spark/sql/Dataset.html" title="class in org.apache.spark.sql">Dataset</a><<a href="../../../../../org/apache/spark/sql/Row.html" title="interface in org.apache.spark.sql">Row</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#transform-org.apache.spark.sql.Dataset-">transform</a></span>(<a href="../../../../../org/apache/spark/sql/Dataset.html" title="class in org.apache.spark.sql">Dataset</a><?> dataset)</code> |
| <div class="block">Transforms the input dataset.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/spark/sql/types/StructType.html" title="class in org.apache.spark.sql.types">StructType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#transformSchema-org.apache.spark.sql.types.StructType-">transformSchema</a></span>(<a href="../../../../../org/apache/spark/sql/types/StructType.html" title="class in org.apache.spark.sql.types">StructType</a> schema)</code> |
| <div class="block">Check transform validity and derive the output schema from the input schema.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>String</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#uid--">uid</a></span>()</code> |
| <div class="block">An immutable unique ID for the object and its derivatives.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>String</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#vectorCol--">vectorCol</a></span>()</code> </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/spark/ml/util/MLWriter.html" title="class in org.apache.spark.ml.util">MLWriter</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html#write--">write</a></span>()</code> |
| <div class="block">Returns an <code>MLWriter</code> instance for this ML instance.</div> |
| </td> |
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| <code>$init$, initializeForcefully, initializeLogIfNecessary, initializeLogIfNecessary, initializeLogIfNecessary$default$2, initLock, isTraceEnabled, log, logDebug, logDebug, logError, logError, logInfo, logInfo, logName, logTrace, logTrace, logWarning, logWarning, org$apache$spark$internal$Logging$$log__$eq, org$apache$spark$internal$Logging$$log_, uninitialize</code></li> |
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| <h4>VectorAttributeRewriter</h4> |
| <pre>public VectorAttributeRewriter(String uid, |
| String vectorCol, |
| scala.collection.immutable.Map<String,String> prefixesToRewrite)</pre> |
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| <pre>public VectorAttributeRewriter(String vectorCol, |
| scala.collection.immutable.Map<String,String> prefixesToRewrite)</pre> |
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| <h4>read</h4> |
| <pre>public static <a href="../../../../../org/apache/spark/ml/util/MLReader.html" title="class in org.apache.spark.ml.util">MLReader</a><<a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html" title="class in org.apache.spark.ml.feature">VectorAttributeRewriter</a>> read()</pre> |
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| <h4>load</h4> |
| <pre>public static <a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html" title="class in org.apache.spark.ml.feature">VectorAttributeRewriter</a> load(String path)</pre> |
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| <h4>uid</h4> |
| <pre>public String uid()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/spark/ml/util/Identifiable.html#uid--">Identifiable</a></code></span></div> |
| <div class="block">An immutable unique ID for the object and its derivatives.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/spark/ml/util/Identifiable.html#uid--">uid</a></code> in interface <code><a href="../../../../../org/apache/spark/ml/util/Identifiable.html" title="interface in org.apache.spark.ml.util">Identifiable</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>(undocumented)</dd> |
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| <pre>public String vectorCol()</pre> |
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| <h4>prefixesToRewrite</h4> |
| <pre>public scala.collection.immutable.Map<String,String> prefixesToRewrite()</pre> |
| </li> |
| </ul> |
| <a name="transform-org.apache.spark.sql.Dataset-"> |
| <!-- --> |
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| <li class="blockList"> |
| <h4>transform</h4> |
| <pre>public <a href="../../../../../org/apache/spark/sql/Dataset.html" title="class in org.apache.spark.sql">Dataset</a><<a href="../../../../../org/apache/spark/sql/Row.html" title="interface in org.apache.spark.sql">Row</a>> transform(<a href="../../../../../org/apache/spark/sql/Dataset.html" title="class in org.apache.spark.sql">Dataset</a><?> dataset)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/spark/ml/Transformer.html#transform-org.apache.spark.sql.Dataset-">Transformer</a></code></span></div> |
| <div class="block">Transforms the input dataset.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/spark/ml/Transformer.html#transform-org.apache.spark.sql.Dataset-">transform</a></code> in class <code><a href="../../../../../org/apache/spark/ml/Transformer.html" title="class in org.apache.spark.ml">Transformer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>dataset</code> - (undocumented)</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>(undocumented)</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="transformSchema-org.apache.spark.sql.types.StructType-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
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| <h4>transformSchema</h4> |
| <pre>public <a href="../../../../../org/apache/spark/sql/types/StructType.html" title="class in org.apache.spark.sql.types">StructType</a> transformSchema(<a href="../../../../../org/apache/spark/sql/types/StructType.html" title="class in org.apache.spark.sql.types">StructType</a> schema)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from class: <code><a href="../../../../../org/apache/spark/ml/PipelineStage.html#transformSchema-org.apache.spark.sql.types.StructType-">PipelineStage</a></code></span></div> |
| <div class="block">Check transform validity and derive the output schema from the input schema. |
| <p> |
| We check validity for interactions between parameters during <code>transformSchema</code> and |
| raise an exception if any parameter value is invalid. Parameter value checks which |
| do not depend on other parameters are handled by <code>Param.validate()</code>. |
| <p> |
| Typical implementation should first conduct verification on schema change and parameter |
| validity, including complex parameter interaction checks.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/spark/ml/PipelineStage.html#transformSchema-org.apache.spark.sql.types.StructType-">transformSchema</a></code> in class <code><a href="../../../../../org/apache/spark/ml/PipelineStage.html" title="class in org.apache.spark.ml">PipelineStage</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>schema</code> - (undocumented)</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>(undocumented)</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="copy-org.apache.spark.ml.param.ParamMap-"> |
| <!-- --> |
| </a> |
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| <h4>copy</h4> |
| <pre>public <a href="../../../../../org/apache/spark/ml/feature/VectorAttributeRewriter.html" title="class in org.apache.spark.ml.feature">VectorAttributeRewriter</a> copy(<a href="../../../../../org/apache/spark/ml/param/ParamMap.html" title="class in org.apache.spark.ml.param">ParamMap</a> extra)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/spark/ml/param/Params.html#copy-org.apache.spark.ml.param.ParamMap-">Params</a></code></span></div> |
| <div class="block">Creates a copy of this instance with the same UID and some extra params. |
| Subclasses should implement this method and set the return type properly. |
| See <code>defaultCopy()</code>.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/spark/ml/param/Params.html#copy-org.apache.spark.ml.param.ParamMap-">copy</a></code> in interface <code><a href="../../../../../org/apache/spark/ml/param/Params.html" title="interface in org.apache.spark.ml.param">Params</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/spark/ml/Transformer.html#copy-org.apache.spark.ml.param.ParamMap-">copy</a></code> in class <code><a href="../../../../../org/apache/spark/ml/Transformer.html" title="class in org.apache.spark.ml">Transformer</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>extra</code> - (undocumented)</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>(undocumented)</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="write--"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>write</h4> |
| <pre>public <a href="../../../../../org/apache/spark/ml/util/MLWriter.html" title="class in org.apache.spark.ml.util">MLWriter</a> write()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../org/apache/spark/ml/util/MLWritable.html#write--">MLWritable</a></code></span></div> |
| <div class="block">Returns an <code>MLWriter</code> instance for this ML instance.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../org/apache/spark/ml/util/MLWritable.html#write--">write</a></code> in interface <code><a href="../../../../../org/apache/spark/ml/util/MLWritable.html" title="interface in org.apache.spark.ml.util">MLWritable</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>(undocumented)</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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