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| <h1>ItemSimilarityDriver</h1> |
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| <span class="name">ItemSimilarityDriver</span><span class="result"> extends <a href="MahoutSparkDriver.html" class="extype" name="org.apache.mahout.drivers.MahoutSparkDriver">MahoutSparkDriver</a></span> |
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| <div id="comment" class="fullcommenttop"><div class="comment cmt"><p>Command line interface for <span class="extype" name="org.apache.mahout.math.cf.SimilarityAnalysis#cooccurrencesIDSs">org.apache.mahout.math.cf.SimilarityAnalysis#cooccurrencesIDSs</span>. Reads text lines |
| that contain (row id, column id, ...). The IDs are user specified strings which will be preserved in the output. |
| The individual elements will be accumulated into a matrix like |
| <span class="extype" name="org.apache.mahout.math.indexeddataset.IndexedDataset">org.apache.mahout.math.indexeddataset.IndexedDataset</span> and |
| <span class="extype" name="org.apache.mahout.math.cf.SimilarityAnalysis#cooccurrencesIDSs">org.apache.mahout.math.cf.SimilarityAnalysis#cooccurrencesIDSs</span> will be used to calculate row-wise |
| self-similarity, or when using filters or two inputs, will generate two matrices and calculate both the |
| self-similarity of the primary matrix and the row-wise similarity of the primary to the secondary. Returns one |
| or two directories of text files formatted as specified in the options. The options allow flexible control of the |
| input schema, file discovery, output schema, and control of algorithm parameters. To get help run</p><pre>mahout spark-itemsimilarity</pre><p> for a full explanation of options. To process simple elements of text delimited |
| values (userID,itemID) with or without a strengths and with a separator of tab, comma, or space, you can specify |
| only the input and output file and directory--all else will default to the correct values. Each output line will |
| contain the Item ID and similar items sorted by LLR strength descending. |
| mahout spark-itemsimilarity |
| }}} |
| values (userID,itemID) with or without a strengths and with a separator of tab, comma, or space, you can specify |
| only the input and output file and directory--all else will default to the correct values. Each output line will |
| contain the Item ID and similar items sorted by LLR strength descending.</p></div><dl class="attributes block"> <dt>Note</dt><dd><span class="cmt"><p>To use with a Spark cluster see the --master option, if you run out of heap space check |
| the --sparkExecutorMemory option. Other <span class="extype" name="org.apache.spark.SparkConf">org.apache.spark.SparkConf</span> key value pairs can be with the -D:k=v |
| option. |
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| <p class="shortcomment cmt">Entry point, not using Scala App trait</p><div class="fullcomment"><div class="comment cmt"><p>Entry point, not using Scala App trait</p></div><dl class="paramcmts block"><dt class="param">args</dt><dd class="cmt"><p>Command line args, if empty a help message is printed. |
| </p></dd></dl><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.mahout.drivers.ItemSimilarityDriver">ItemSimilarityDriver</a> → MahoutDriver</dd></dl></div> |
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| <div class="fullcomment"><dl class="attributes block"> <dt>Attributes</dt><dd>protected </dd><dt>Definition Classes</dt><dd>MahoutDriver</dd></dl></div> |
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| </span> |
| </h4> |
| <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.mahout.drivers.ItemSimilarityDriver">ItemSimilarityDriver</a> → MahoutDriver</dd></dl></div> |
| </li><li name="org.apache.mahout.drivers.MahoutSparkDriver#sparkConf" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped"> |
| <a id="sparkConf:org.apache.spark.SparkConf"></a> |
| <a id="sparkConf:SparkConf"></a> |
| <h4 class="signature"> |
| <span class="modifier_kind"> |
| <span class="modifier">implicit </span> |
| <span class="kind">var</span> |
| </span> |
| <span class="symbol"> |
| <span class="name">sparkConf</span><span class="result">: <span class="extype" name="org.apache.spark.SparkConf">SparkConf</span></span> |
| </span> |
| </h4> |
| <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="MahoutSparkDriver.html" class="extype" name="org.apache.mahout.drivers.MahoutSparkDriver">MahoutSparkDriver</a></dd></dl></div> |
| </li><li name="org.apache.mahout.drivers.ItemSimilarityDriver#start" visbl="prt" data-isabs="false" fullComment="yes" group="Ungrouped"> |
| <a id="start():Unit"></a> |
| <a id="start():Unit"></a> |
| <h4 class="signature"> |
| <span class="modifier_kind"> |
| <span class="modifier"></span> |
| <span class="kind">def</span> |
| </span> |
| <span class="symbol"> |
| <span class="name">start</span><span class="params">()</span><span class="result">: <span class="extype" name="scala.Unit">Unit</span></span> |
| </span> |
| </h4> |
| <p class="shortcomment cmt">Creates a Spark context to run the job inside.</p><div class="fullcomment"><div class="comment cmt"><p>Creates a Spark context to run the job inside. |
| Override to set the SparkConf values specific to the job, |
| these must be set before the context is created. |
| </p></div><dl class="attributes block"> <dt>Attributes</dt><dd>protected </dd><dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.mahout.drivers.ItemSimilarityDriver">ItemSimilarityDriver</a> → <a href="MahoutSparkDriver.html" class="extype" name="org.apache.mahout.drivers.MahoutSparkDriver">MahoutSparkDriver</a> → MahoutDriver</dd></dl></div> |
| </li><li name="org.apache.mahout.drivers.MahoutDriver#stop" visbl="prt" data-isabs="false" fullComment="yes" group="Ungrouped"> |
| <a id="stop():Unit"></a> |
| <a id="stop():Unit"></a> |
| <h4 class="signature"> |
| <span class="modifier_kind"> |
| <span class="modifier"></span> |
| <span class="kind">def</span> |
| </span> |
| <span class="symbol"> |
| <span class="name">stop</span><span class="params">()</span><span class="result">: <span class="extype" name="scala.Unit">Unit</span></span> |
| </span> |
| </h4> |
| <div class="fullcomment"><dl class="attributes block"> <dt>Attributes</dt><dd>protected </dd><dt>Definition Classes</dt><dd>MahoutDriver</dd></dl></div> |
| </li><li name="scala.AnyRef#synchronized" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped"> |
| <a id="synchronized[T0](x$1:=>T0):T0"></a> |
| <a id="synchronized[T0](⇒T0):T0"></a> |
| <h4 class="signature"> |
| <span class="modifier_kind"> |
| <span class="modifier">final </span> |
| <span class="kind">def</span> |
| </span> |
| <span class="symbol"> |
| <span class="name">synchronized</span><span class="tparams">[<span name="T0">T0</span>]</span><span class="params">(<span name="arg0">arg0: ⇒ <span class="extype" name="java.lang.AnyRef.synchronized.T0">T0</span></span>)</span><span class="result">: <span class="extype" name="java.lang.AnyRef.synchronized.T0">T0</span></span> |
| </span> |
| </h4> |
| <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd></dl></div> |
| </li><li name="scala.AnyRef#toString" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped"> |
| <a id="toString():String"></a> |
| <a id="toString():String"></a> |
| <h4 class="signature"> |
| <span class="modifier_kind"> |
| <span class="modifier"></span> |
| <span class="kind">def</span> |
| </span> |
| <span class="symbol"> |
| <span class="name">toString</span><span class="params">()</span><span class="result">: <span class="extype" name="java.lang.String">String</span></span> |
| </span> |
| </h4> |
| <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef → Any</dd></dl></div> |
| </li><li name="org.apache.mahout.drivers.MahoutSparkDriver#useContext" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped"> |
| <a id="useContext(context:org.apache.mahout.math.drm.DistributedContext):Unit"></a> |
| <a id="useContext(DistributedContext):Unit"></a> |
| <h4 class="signature"> |
| <span class="modifier_kind"> |
| <span class="modifier"></span> |
| <span class="kind">def</span> |
| </span> |
| <span class="symbol"> |
| <span class="name">useContext</span><span class="params">(<span name="context">context: <span class="extype" name="org.apache.mahout.math.drm.DistributedContext">DistributedContext</span></span>)</span><span class="result">: <span class="extype" name="scala.Unit">Unit</span></span> |
| </span> |
| </h4> |
| <p class="shortcomment cmt">Call this before start to use an existing context as when running multiple drivers from a scalatest suite.</p><div class="fullcomment"><div class="comment cmt"><p>Call this before start to use an existing context as when running multiple drivers from a scalatest suite.</p></div><dl class="paramcmts block"><dt class="param">context</dt><dd class="cmt"><p>An already set up context to run against |
| </p></dd></dl><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="MahoutSparkDriver.html" class="extype" name="org.apache.mahout.drivers.MahoutSparkDriver">MahoutSparkDriver</a></dd></dl></div> |
| </li><li name="scala.AnyRef#wait" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped"> |
| <a id="wait():Unit"></a> |
| <a id="wait():Unit"></a> |
| <h4 class="signature"> |
| <span class="modifier_kind"> |
| <span class="modifier">final </span> |
| <span class="kind">def</span> |
| </span> |
| <span class="symbol"> |
| <span class="name">wait</span><span class="params">()</span><span class="result">: <span class="extype" name="scala.Unit">Unit</span></span> |
| </span> |
| </h4> |
| <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd><dt>Annotations</dt><dd> |
| <span class="name">@throws</span><span class="args">(<span> |
| |
| <span class="defval" name="classOf[java.lang.InterruptedException]">...</span> |
| </span>)</span> |
| |
| </dd></dl></div> |
| </li><li name="scala.AnyRef#wait" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped"> |
| <a id="wait(x$1:Long,x$2:Int):Unit"></a> |
| <a id="wait(Long,Int):Unit"></a> |
| <h4 class="signature"> |
| <span class="modifier_kind"> |
| <span class="modifier">final </span> |
| <span class="kind">def</span> |
| </span> |
| <span class="symbol"> |
| <span class="name">wait</span><span class="params">(<span name="arg0">arg0: <span class="extype" name="scala.Long">Long</span></span>, <span name="arg1">arg1: <span class="extype" name="scala.Int">Int</span></span>)</span><span class="result">: <span class="extype" name="scala.Unit">Unit</span></span> |
| </span> |
| </h4> |
| <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd><dt>Annotations</dt><dd> |
| <span class="name">@throws</span><span class="args">(<span> |
| |
| <span class="defval" name="classOf[java.lang.InterruptedException]">...</span> |
| </span>)</span> |
| |
| </dd></dl></div> |
| </li><li name="scala.AnyRef#wait" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped"> |
| <a id="wait(x$1:Long):Unit"></a> |
| <a id="wait(Long):Unit"></a> |
| <h4 class="signature"> |
| <span class="modifier_kind"> |
| <span class="modifier">final </span> |
| <span class="kind">def</span> |
| </span> |
| <span class="symbol"> |
| <span class="name">wait</span><span class="params">(<span name="arg0">arg0: <span class="extype" name="scala.Long">Long</span></span>)</span><span class="result">: <span class="extype" name="scala.Unit">Unit</span></span> |
| </span> |
| </h4> |
| <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd><dt>Annotations</dt><dd> |
| <span class="name">@throws</span><span class="args">(<span> |
| |
| <span class="defval" name="classOf[java.lang.InterruptedException]">...</span> |
| </span>)</span> |
| |
| </dd></dl></div> |
| </li></ol> |
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| </div> |
| |
| <div id="inheritedMembers"> |
| <div class="parent" name="org.apache.mahout.drivers.MahoutSparkDriver"> |
| <h3>Inherited from <a href="MahoutSparkDriver.html" class="extype" name="org.apache.mahout.drivers.MahoutSparkDriver">MahoutSparkDriver</a></h3> |
| </div><div class="parent" name="org.apache.mahout.drivers.MahoutDriver"> |
| <h3>Inherited from <span class="extype" name="org.apache.mahout.drivers.MahoutDriver">MahoutDriver</span></h3> |
| </div><div class="parent" name="scala.AnyRef"> |
| <h3>Inherited from <span class="extype" name="scala.AnyRef">AnyRef</span></h3> |
| </div><div class="parent" name="scala.Any"> |
| <h3>Inherited from <span class="extype" name="scala.Any">Any</span></h3> |
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