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| <li>Constr | </li> |
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| <div class="subTitle">org.apache.mahout.clustering.streaming.mapreduce</div> |
| <h2 title="Class StreamingKMeansDriver" class="title">Class StreamingKMeansDriver</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.conf.Configured</li> |
| <li> |
| <ul class="inheritance"> |
| <li><a href="../../../../../../org/apache/mahout/common/AbstractJob.html" title="class in org.apache.mahout.common">org.apache.mahout.common.AbstractJob</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver</li> |
| </ul> |
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| <div class="description"> |
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| <dt>All Implemented Interfaces:</dt> |
| <dd>org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool</dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public final class <span class="typeNameLabel">StreamingKMeansDriver</span> |
| extends <a href="../../../../../../org/apache/mahout/common/AbstractJob.html" title="class in org.apache.mahout.common">AbstractJob</a></pre> |
| <div class="block">Classifies the vectors into different clusters found by the clustering |
| algorithm.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
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| <!-- =========== FIELD SUMMARY =========== --> |
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| <h3>Field Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#ESTIMATED_DISTANCE_CUTOFF">ESTIMATED_DISTANCE_CUTOFF</a></span></code> |
| <div class="block">The initial estimated distance cutoff between two points for forming new clusters.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#ESTIMATED_NUM_MAP_CLUSTERS">ESTIMATED_NUM_MAP_CLUSTERS</a></span></code> |
| <div class="block">The number of cluster that Mappers will use should be \(O(k log n)\) where k is the number of clusters |
| to get at the end and n is the number of points to cluster.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#IGNORE_WEIGHTS">IGNORE_WEIGHTS</a></span></code> |
| <div class="block">Whether to correct the weights of the centroids after the clustering is done.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static float</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/clustering/streaming/mapreduce/StreamingKMeansDriver.html#INVALID_DISTANCE_CUTOFF">INVALID_DISTANCE_CUTOFF</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#MAX_NUM_ITERATIONS">MAX_NUM_ITERATIONS</a></span></code> |
| <div class="block">After mapping finishes, we get an intermediate set of vectors that represent approximate |
| clusterings of the data from each Mapper.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#NUM_BALLKMEANS_RUNS">NUM_BALLKMEANS_RUNS</a></span></code> |
| <div class="block">The percentage of points that go into the "training" set when evaluating BallKMeans runs in the reducer.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#NUM_PROJECTIONS_OPTION">NUM_PROJECTIONS_OPTION</a></span></code> |
| <div class="block">The number of projections to use when using a projection searcher like ProjectionSearch or |
| FastProjectionSearch.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#RANDOM_INIT">RANDOM_INIT</a></span></code> |
| <div class="block">Whether to use k-means++ initialization or random initialization of the seed centroids.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#REDUCE_STREAMING_KMEANS">REDUCE_STREAMING_KMEANS</a></span></code> |
| <div class="block">Whether to run another pass of StreamingKMeans on the reducer's points before BallKMeans.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#SEARCH_SIZE_OPTION">SEARCH_SIZE_OPTION</a></span></code> |
| <div class="block">When using approximate searches (anything that's not BruteSearch), |
| more than just the seemingly closest element must be considered.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#SEARCHER_CLASS_OPTION">SEARCHER_CLASS_OPTION</a></span></code> |
| <div class="block">The Searcher class when performing nearest neighbor search in StreamingKMeans.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#TEST_PROBABILITY">TEST_PROBABILITY</a></span></code> |
| <div class="block">The percentage of points that go into the "test" set when evaluating BallKMeans runs in the reducer.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <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/clustering/streaming/mapreduce/StreamingKMeansDriver.html#TRIM_FRACTION">TRIM_FRACTION</a></span></code> |
| <div class="block">The "ball" aspect of ball k-means means that only the closest points to the centroid will actually be used |
| for updating.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="fields.inherited.from.class.org.apache.mahout.common.AbstractJob"> |
| <!-- --> |
| </a> |
| <h3>Fields inherited from class org.apache.mahout.common.<a href="../../../../../../org/apache/mahout/common/AbstractJob.html" title="class in org.apache.mahout.common">AbstractJob</a></h3> |
| <code><a href="../../../../../../org/apache/mahout/common/AbstractJob.html#argMap">argMap</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#inputFile">inputFile</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#inputPath">inputPath</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#outputFile">outputFile</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#outputPath">outputPath</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#tempPath">tempPath</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| </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="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></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>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/clustering/streaming/mapreduce/StreamingKMeansDriver.html#configureOptionsForWorkers-org.apache.hadoop.conf.Configuration-int-int-float-int-float-boolean-boolean-float-int-java.lang.String-java.lang.String-int-int-java.lang.String-boolean-">configureOptionsForWorkers</a></span>(org.apache.hadoop.conf.Configuration conf, |
| int numClusters, |
| int estimatedNumMapClusters, |
| float estimatedDistanceCutoff, |
| int maxNumIterations, |
| float trimFraction, |
| boolean randomInit, |
| boolean ignoreWeights, |
| float testProbability, |
| int numBallKMeansRuns, |
| <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> measureClass, |
| <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> searcherClass, |
| int searchSize, |
| int numProjections, |
| <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> method, |
| boolean reduceStreamingKMeans)</code> |
| <div class="block">Checks the parameters for a StreamingKMeans job and prepares a Configuration with them.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/clustering/streaming/mapreduce/StreamingKMeansDriver.html#main-java.lang.String:A-">main</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>[] args)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/clustering/streaming/mapreduce/StreamingKMeansDriver.html#run-org.apache.hadoop.conf.Configuration-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">run</a></span>(org.apache.hadoop.conf.Configuration conf, |
| org.apache.hadoop.fs.Path input, |
| org.apache.hadoop.fs.Path output)</code> |
| <div class="block">Iterate over the input vectors to produce clusters and, if requested, use the results of the final iteration to |
| cluster the input vectors.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/clustering/streaming/mapreduce/StreamingKMeansDriver.html#run-java.lang.String:A-">run</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>[] args)</code> </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/mahout/clustering/streaming/mapreduce/StreamingKMeansDriver.html#runMapReduce-org.apache.hadoop.conf.Configuration-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-">runMapReduce</a></span>(org.apache.hadoop.conf.Configuration conf, |
| org.apache.hadoop.fs.Path input, |
| org.apache.hadoop.fs.Path output)</code> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.org.apache.mahout.common.AbstractJob"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class org.apache.mahout.common.<a href="../../../../../../org/apache/mahout/common/AbstractJob.html" title="class in org.apache.mahout.common">AbstractJob</a></h3> |
| <code><a href="../../../../../../org/apache/mahout/common/AbstractJob.html#addFlag-java.lang.String-java.lang.String-java.lang.String-">addFlag</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#addInputOption--">addInputOption</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#addOption-org.apache.commons.cli2.Option-">addOption</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#addOption-java.lang.String-java.lang.String-java.lang.String-">addOption</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#addOption-java.lang.String-java.lang.String-java.lang.String-boolean-">addOption</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#addOption-java.lang.String-java.lang.String-java.lang.String-java.lang.String-">addOption</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#addOutputOption--">addOutputOption</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#buildOption-java.lang.String-java.lang.String-java.lang.String-boolean-boolean-java.lang.String-">buildOption</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#buildOption-java.lang.String-java.lang.String-java.lang.String-boolean-int-int-boolean-java.lang.String-">buildOption</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#getAnalyzerClassFromOption--">getAnalyzerClassFromOption</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#getCLIOption-java.lang.String-">getCLIOption</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#getConf--">getConf</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#getDimensions-org.apache.hadoop.fs.Path-">getDimensions</a>, <a href="../../../../../../org/apache/mahout/common/AbstractJob.html#getFloat-java.lang.String-">getFloat</a>, <a 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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#toString--" title="class or interface in java.lang">toString</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> |
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| </div> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| <li class="blockList"><a name="field.detail"> |
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| </a> |
| <h3>Field Detail</h3> |
| <a name="ESTIMATED_NUM_MAP_CLUSTERS"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>ESTIMATED_NUM_MAP_CLUSTERS</h4> |
| <pre>public static final <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> ESTIMATED_NUM_MAP_CLUSTERS</pre> |
| <div class="block">The number of cluster that Mappers will use should be \(O(k log n)\) where k is the number of clusters |
| to get at the end and n is the number of points to cluster. This doesn't need to be exact. |
| It will be adjusted at runtime.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.ESTIMATED_NUM_MAP_CLUSTERS">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
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| </a> |
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| <h4>ESTIMATED_DISTANCE_CUTOFF</h4> |
| <pre>public static final <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> ESTIMATED_DISTANCE_CUTOFF</pre> |
| <div class="block">The initial estimated distance cutoff between two points for forming new clusters.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../org/apache/mahout/clustering/streaming/cluster/StreamingKMeans.html" title="class in org.apache.mahout.clustering.streaming.cluster"><code>Defaults to 10e-6.</code></a>, |
| <a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.ESTIMATED_DISTANCE_CUTOFF">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="MAX_NUM_ITERATIONS"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>MAX_NUM_ITERATIONS</h4> |
| <pre>public static final <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> MAX_NUM_ITERATIONS</pre> |
| <div class="block">After mapping finishes, we get an intermediate set of vectors that represent approximate |
| clusterings of the data from each Mapper. These can be clustered by the Reducer using |
| BallKMeans in memory. This variable is the maximum number of iterations in the final |
| BallKMeans algorithm. |
| Defaults to 10.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.MAX_NUM_ITERATIONS">Constant Field Values</a></dd> |
| </dl> |
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| <h4>TRIM_FRACTION</h4> |
| <pre>public static final <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> TRIM_FRACTION</pre> |
| <div class="block">The "ball" aspect of ball k-means means that only the closest points to the centroid will actually be used |
| for updating. The fraction of the points to be used is those points whose distance to the center is within |
| trimFraction * distance to the closest other center. |
| Defaults to 0.9.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.TRIM_FRACTION">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="RANDOM_INIT"> |
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| </a> |
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| <li class="blockList"> |
| <h4>RANDOM_INIT</h4> |
| <pre>public static final <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> RANDOM_INIT</pre> |
| <div class="block">Whether to use k-means++ initialization or random initialization of the seed centroids. |
| Essentially, k-means++ provides better clusters, but takes longer, whereas random initialization takes less |
| time, but produces worse clusters, and tends to fail more often and needs multiple runs to compare to |
| k-means++. If set, uses randomInit.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../org/apache/mahout/clustering/streaming/cluster/BallKMeans.html" title="class in org.apache.mahout.clustering.streaming.cluster"><code>BallKMeans</code></a>, |
| <a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.RANDOM_INIT">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="IGNORE_WEIGHTS"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>IGNORE_WEIGHTS</h4> |
| <pre>public static final <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> IGNORE_WEIGHTS</pre> |
| <div class="block">Whether to correct the weights of the centroids after the clustering is done. The weights end up being wrong |
| because of the trimFraction and possible train/test splits. In some cases, especially in a pipeline, having |
| an accurate count of the weights is useful. If set, ignores the final weights.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.IGNORE_WEIGHTS">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="TEST_PROBABILITY"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>TEST_PROBABILITY</h4> |
| <pre>public static final <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> TEST_PROBABILITY</pre> |
| <div class="block">The percentage of points that go into the "test" set when evaluating BallKMeans runs in the reducer.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.TEST_PROBABILITY">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="NUM_BALLKMEANS_RUNS"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>NUM_BALLKMEANS_RUNS</h4> |
| <pre>public static final <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> NUM_BALLKMEANS_RUNS</pre> |
| <div class="block">The percentage of points that go into the "training" set when evaluating BallKMeans runs in the reducer.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.NUM_BALLKMEANS_RUNS">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="SEARCHER_CLASS_OPTION"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>SEARCHER_CLASS_OPTION</h4> |
| <pre>public static final <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> SEARCHER_CLASS_OPTION</pre> |
| <div class="block">The Searcher class when performing nearest neighbor search in StreamingKMeans. |
| Defaults to ProjectionSearch.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.SEARCHER_CLASS_OPTION">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="NUM_PROJECTIONS_OPTION"> |
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| <h4>NUM_PROJECTIONS_OPTION</h4> |
| <pre>public static final <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> NUM_PROJECTIONS_OPTION</pre> |
| <div class="block">The number of projections to use when using a projection searcher like ProjectionSearch or |
| FastProjectionSearch. Projection searches work by projection the all the vectors on to a set of |
| basis vectors and searching for the projected query in that totally ordered set. This |
| however can produce false positives (vectors that are closer when projected than they would |
| actually be. |
| So, there must be more than one projection vectors in the basis. This variable is the number |
| of vectors in a basis. |
| Defaults to 3</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.NUM_PROJECTIONS_OPTION">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="SEARCH_SIZE_OPTION"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>SEARCH_SIZE_OPTION</h4> |
| <pre>public static final <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> SEARCH_SIZE_OPTION</pre> |
| <div class="block">When using approximate searches (anything that's not BruteSearch), |
| more than just the seemingly closest element must be considered. This variable has different |
| meanings depending on the actual Searcher class used but is a measure of how many candidates |
| will be considered. |
| See the ProjectionSearch, FastProjectionSearch, LocalitySensitiveHashSearch classes for more |
| details. |
| Defaults to 2.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.SEARCH_SIZE_OPTION">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="REDUCE_STREAMING_KMEANS"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>REDUCE_STREAMING_KMEANS</h4> |
| <pre>public static final <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> REDUCE_STREAMING_KMEANS</pre> |
| <div class="block">Whether to run another pass of StreamingKMeans on the reducer's points before BallKMeans. On some data sets |
| with a large number of mappers, the intermediate number of clusters passed to the reducer is too large to |
| fit into memory directly, hence the option to collapse the clusters further with StreamingKMeans.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.REDUCE_STREAMING_KMEANS">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
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| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>INVALID_DISTANCE_CUTOFF</h4> |
| <pre>public static final float INVALID_DISTANCE_CUTOFF</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../constant-values.html#org.apache.mahout.clustering.streaming.mapreduce.StreamingKMeansDriver.INVALID_DISTANCE_CUTOFF">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
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| <h3>Method Detail</h3> |
| <a name="run-java.lang.String:A-"> |
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| </a> |
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| <h4>run</h4> |
| <pre>public int run(<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>[] args) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="configureOptionsForWorkers-org.apache.hadoop.conf.Configuration-int-int-float-int-float-boolean-boolean-float-int-java.lang.String-java.lang.String-int-int-java.lang.String-boolean-"> |
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| <h4>configureOptionsForWorkers</h4> |
| <pre>public static void configureOptionsForWorkers(org.apache.hadoop.conf.Configuration conf, |
| int numClusters, |
| int estimatedNumMapClusters, |
| float estimatedDistanceCutoff, |
| int maxNumIterations, |
| float trimFraction, |
| boolean randomInit, |
| boolean ignoreWeights, |
| float testProbability, |
| int numBallKMeansRuns, |
| <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> measureClass, |
| <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> searcherClass, |
| int searchSize, |
| int numProjections, |
| <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> method, |
| boolean reduceStreamingKMeans) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a></pre> |
| <div class="block">Checks the parameters for a StreamingKMeans job and prepares a Configuration with them.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>conf</code> - the Configuration to populate</dd> |
| <dd><code>numClusters</code> - k, the number of clusters at the end</dd> |
| <dd><code>estimatedNumMapClusters</code> - O(k log n), the number of clusters requested from each mapper</dd> |
| <dd><code>estimatedDistanceCutoff</code> - an estimate of the minimum distance that separates two clusters (can be smaller and |
| will be increased dynamically)</dd> |
| <dd><code>maxNumIterations</code> - the maximum number of iterations of BallKMeans</dd> |
| <dd><code>trimFraction</code> - the fraction of the points to be considered in updating a ball k-means</dd> |
| <dd><code>randomInit</code> - whether to initialize the ball k-means seeds randomly</dd> |
| <dd><code>ignoreWeights</code> - whether to ignore the invalid final ball k-means weights</dd> |
| <dd><code>testProbability</code> - the percentage of vectors assigned to the test set for selecting the best final centers</dd> |
| <dd><code>numBallKMeansRuns</code> - the number of BallKMeans runs in the reducer that determine the centroids to return |
| (clusters are computed for the training set and the error is computed on the test set)</dd> |
| <dd><code>measureClass</code> - string, name of the distance measure class; theory works for Euclidean-like distances</dd> |
| <dd><code>searcherClass</code> - string, name of the searcher that will be used for nearest neighbor search</dd> |
| <dd><code>searchSize</code> - the number of closest neighbors to look at for selecting the closest one in approximate nearest |
| neighbor searches</dd> |
| <dd><code>numProjections</code> - the number of projected vectors to use for faster searching (only useful for ProjectionSearch |
| or FastProjectionSearch); @see org.apache.mahout.math.neighborhood.ProjectionSearch</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="run-org.apache.hadoop.conf.Configuration-org.apache.hadoop.fs.Path-org.apache.hadoop.fs.Path-"> |
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| </a> |
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| <h4>run</h4> |
| <pre>public static int run(org.apache.hadoop.conf.Configuration conf, |
| org.apache.hadoop.fs.Path input, |
| org.apache.hadoop.fs.Path output) |
| 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>, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a>, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a>, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ExecutionException.html?is-external=true" title="class or interface in java.util.concurrent">ExecutionException</a></pre> |
| <div class="block">Iterate over the input vectors to produce clusters and, if requested, use the results of the final iteration to |
| cluster the input vectors.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>input</code> - the directory pathname for input points.</dd> |
| <dd><code>output</code> - the directory pathname for output points.</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>0 on success, -1 on failure.</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> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a></code></dd> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ExecutionException.html?is-external=true" title="class or interface in java.util.concurrent">ExecutionException</a></code></dd> |
| </dl> |
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| <h4>runMapReduce</h4> |
| <pre>public static int runMapReduce(org.apache.hadoop.conf.Configuration conf, |
| org.apache.hadoop.fs.Path input, |
| org.apache.hadoop.fs.Path output) |
| 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>, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a>, |
| <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre> |
| <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> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html?is-external=true" title="class or interface in java.lang">ClassNotFoundException</a></code></dd> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd> |
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| <pre>public static void main(<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>[] args) |
| throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd> |
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