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From git-site-r...@apache.org
Subject [14/51] [abbrv] [partial] incubator-predictionio-site git commit: Clean up before apache/incubator-predictionio#8e96d1b59c90b0834cf55ce33ba8224dbb7e19f8
Date Thu, 03 Aug 2017 19:02:32 GMT
http://git-wip-us.apache.org/repos/asf/incubator-predictionio-site/blob/79fd2ed6/api/current/org/apache/predictionio/controller/PAlgorithm.html
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-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
-<html>
-        <head>
-          <title>PAlgorithm - PredictionIO Scala API 0.11.0-incubating - org.apache.predictionio.controller.PAlgorithm</title>
-          <meta name="description" content="PAlgorithm - PredictionIO Scala API 0.11.0 - incubating - org.apache.predictionio.controller.PAlgorithm" />
-          <meta name="keywords" content="PAlgorithm PredictionIO Scala API 0.11.0 incubating org.apache.predictionio.controller.PAlgorithm" />
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-        <p id="owner"><a href="../../../package.html" class="extype" name="org">org</a>.<a href="../../package.html" class="extype" name="org.apache">apache</a>.<a href="../package.html" class="extype" name="org.apache.predictionio">predictionio</a>.<a href="package.html" class="extype" name="org.apache.predictionio.controller">controller</a></p>
-        <h1>PAlgorithm</h1>
-      </div>
-
-      <h4 id="signature" class="signature">
-      <span class="modifier_kind">
-        <span class="modifier">abstract </span>
-        <span class="kind">class</span>
-      </span>
-      <span class="symbol">
-        <span class="name">PAlgorithm</span><span class="tparams">[<span name="PD">PD</span>, <span name="M">M</span>, <span name="Q">Q</span>, <span name="P">P</span>]</span><span class="result"> extends <a href="../core/BaseAlgorithm.html" class="extype" name="org.apache.predictionio.core.BaseAlgorithm">BaseAlgorithm</a>[<span class="extype" name="org.apache.predictionio.controller.PAlgorithm.PD">PD</span>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.M">M</span>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.Q">Q</span>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.P">P</span>]</span>
-      </span>
-      </h4>
-      
-          <div id="comment" class="fullcommenttop"><div class="comment cmt"><p>Base class of a parallel algorithm.</p><p>A parallel algorithm can be run in parallel on a cluster and produces a
-model that can also be distributed across a cluster.</p><p>If your input query class requires custom JSON4S serialization, the most
-idiomatic way is to implement a trait that extends <a href="CustomQuerySerializer.html" class="extype" name="org.apache.predictionio.controller.CustomQuerySerializer">CustomQuerySerializer</a>,
-and mix that into your algorithm class, instead of overriding
-<a href="#querySerializer:org.json4s.Formats" class="extmbr" name="org.apache.predictionio.controller.PAlgorithm#querySerializer">querySerializer</a> directly.</p><p>To provide evaluation feature, one must override and implement the
-<a href="#batchPredict(m:M,qs:org.apache.spark.rdd.RDD[(Long,Q)]):org.apache.spark.rdd.RDD[(Long,P)]" class="extmbr" name="org.apache.predictionio.controller.PAlgorithm#batchPredict">batchPredict</a> method. Otherwise, an exception will be thrown when pio eval<code>
-is used.
-</code></p></div><dl class="paramcmts block"><dt class="tparam">PD</dt><dd class="cmt"><p>Prepared data class.</p></dd><dt class="tparam">M</dt><dd class="cmt"><p>Trained model class.</p></dd><dt class="tparam">Q</dt><dd class="cmt"><p>Input query class.</p></dd><dt class="tparam">P</dt><dd class="cmt"><p>Output prediction class.</p></dd></dl><div class="toggleContainer block">
-          <span class="toggle">Linear Supertypes</span>
-          <div class="superTypes hiddenContent"><a href="../core/BaseAlgorithm.html" class="extype" name="org.apache.predictionio.core.BaseAlgorithm">BaseAlgorithm</a>[<span class="extype" name="org.apache.predictionio.controller.PAlgorithm.PD">PD</span>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.M">M</span>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.Q">Q</span>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.P">P</span>], <a href="../core/BaseQuerySerializer.html" class="extype" name="org.apache.predictionio.core.BaseQuerySerializer">BaseQuerySerializer</a>, <a href="../core/AbstractDoer.html" class="extype" name="org.apache.predictionio.core.AbstractDoer">AbstractDoer</a>, <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Serializable" class="extype" target="_top">Serializable</a>, <span class="extype" name="java.io.Serializable">Serializable</span>, <span class="extype" name="scal
 a.AnyRef">AnyRef</span>, <span class="extype" name="scala.Any">Any</span></div>
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-
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-        <div id="ancestors">
-                <span class="filtertype">Inherited<br />
-                </span>
-                <ol id="linearization">
-                  <li class="in" name="org.apache.predictionio.controller.PAlgorithm"><span>PAlgorithm</span></li><li class="in" name="org.apache.predictionio.core.BaseAlgorithm"><span>BaseAlgorithm</span></li><li class="in" name="org.apache.predictionio.core.BaseQuerySerializer"><span>BaseQuerySerializer</span></li><li class="in" name="org.apache.predictionio.core.AbstractDoer"><span>AbstractDoer</span></li><li class="in" name="scala.Serializable"><span>Serializable</span></li><li class="in" name="java.io.Serializable"><span>Serializable</span></li><li class="in" name="scala.AnyRef"><span>AnyRef</span></li><li class="in" name="scala.Any"><span>Any</span></li>
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-          </div>
-        <div id="visbl">
-            <span class="filtertype">Visibility</span>
-            <ol><li class="public in"><span>Public</span></li><li class="all out"><span>All</span></li></ol>
-          </div>
-      </div>
-
-      <div id="template">
-        <div id="allMembers">
-        <div id="constructors" class="members">
-              <h3>Instance Constructors</h3>
-              <ol><li name="org.apache.predictionio.controller.PAlgorithm#&lt;init&gt;" visbl="pub" data-isabs="false" fullComment="no" group="Ungrouped">
-      <a id="&lt;init&gt;():org.apache.predictionio.controller.PAlgorithm[PD,M,Q,P]"></a>
-      <a id="&lt;init&gt;:PAlgorithm[PD,M,Q,P]"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">new</span>
-      </span>
-      <span class="symbol">
-        <span class="name">PAlgorithm</span><span class="params">()</span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt"></p>
-    </li></ol>
-            </div>
-
-        
-
-        <div id="values" class="values members">
-              <h3>Abstract Value Members</h3>
-              <ol><li name="org.apache.predictionio.controller.PAlgorithm#predict" visbl="pub" data-isabs="true" fullComment="yes" group="Ungrouped">
-      <a id="predict(model:M,query:Q):P"></a>
-      <a id="predict(M,Q):P"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier">abstract </span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">predict</span><span class="params">(<span name="model">model: <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.M">M</span></span>, <span name="query">query: <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.Q">Q</span></span>)</span><span class="result">: <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.P">P</span></span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">Implement this method to produce a prediction from a query and trained
-model.</p><div class="fullcomment"><div class="comment cmt"><p>Implement this method to produce a prediction from a query and trained
-model.
-</p></div><dl class="paramcmts block"><dt class="param">model</dt><dd class="cmt"><p>Trained model produced by <a href="#train(sc:org.apache.spark.SparkContext,pd:PD):M" class="extmbr" name="org.apache.predictionio.controller.PAlgorithm#train">train</a>.</p></dd><dt class="param">query</dt><dd class="cmt"><p>An input query.</p></dd><dt>returns</dt><dd class="cmt"><p>A prediction.
-</p></dd></dl></div>
-    </li><li name="org.apache.predictionio.controller.PAlgorithm#train" visbl="pub" data-isabs="true" fullComment="yes" group="Ungrouped">
-      <a id="train(sc:org.apache.spark.SparkContext,pd:PD):M"></a>
-      <a id="train(SparkContext,PD):M"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier">abstract </span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">train</span><span class="params">(<span name="sc">sc: <span class="extype" name="org.apache.spark.SparkContext">SparkContext</span></span>, <span name="pd">pd: <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.PD">PD</span></span>)</span><span class="result">: <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.M">M</span></span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">Implement this method to produce a model from prepared data.</p><div class="fullcomment"><div class="comment cmt"><p>Implement this method to produce a model from prepared data.
-</p></div><dl class="paramcmts block"><dt class="param">pd</dt><dd class="cmt"><p>Prepared data for model training.</p></dd><dt>returns</dt><dd class="cmt"><p>Trained model.
-</p></dd></dl></div>
-    </li></ol>
-            </div>
-
-        <div id="values" class="values members">
-              <h3>Concrete Value Members</h3>
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-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd></dl></div>
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-      </span>
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-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>Any</dd></dl></div>
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-      <a id="##():Int"></a>
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-      </span>
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-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd></dl></div>
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-      <a id="==(Any):Boolean"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier">final </span>
-        <span class="kind">def</span>
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-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>Any</dd></dl></div>
-    </li><li name="scala.Any#asInstanceOf" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="asInstanceOf[T0]:T0"></a>
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-      <h4 class="signature">
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-        <span class="kind">def</span>
-      </span>
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-        <span class="name">asInstanceOf</span><span class="tparams">[<span name="T0">T0</span>]</span><span class="result">: <span class="extype" name="scala.Any.asInstanceOf.T0">T0</span></span>
-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>Any</dd></dl></div>
-    </li><li name="org.apache.predictionio.controller.PAlgorithm#batchPredict" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="batchPredict(m:M,qs:org.apache.spark.rdd.RDD[(Long,Q)]):org.apache.spark.rdd.RDD[(Long,P)]"></a>
-      <a id="batchPredict(M,RDD[(Long,Q)]):RDD[(Long,P)]"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">batchPredict</span><span class="params">(<span name="m">m: <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.M">M</span></span>, <span name="qs">qs: <span class="extype" name="org.apache.spark.rdd.RDD">RDD</span>[(<a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Long" class="extype" target="_top">Long</a>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.Q">Q</span>)]</span>)</span><span class="result">: <span class="extype" name="org.apache.spark.rdd.RDD">RDD</span>[(<a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Long" class="extype" target="_top">Long</a>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.P">P</span>)]</span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">To provide evaluation feature, one must override and implement this method
-to generate many predictions in batch.</p><div class="fullcomment"><div class="comment cmt"><p>To provide evaluation feature, one must override and implement this method
-to generate many predictions in batch. Otherwise, an exception will be
-thrown when <code>pio eval</code> is used.</p><p>The default implementation throws an exception.
-</p></div><dl class="paramcmts block"><dt class="param">m</dt><dd class="cmt"><p>Trained model produced by <a href="#train(sc:org.apache.spark.SparkContext,pd:PD):M" class="extmbr" name="org.apache.predictionio.controller.PAlgorithm#train">train</a>.</p></dd><dt class="param">qs</dt><dd class="cmt"><p>An RDD of index-query tuples. The index is used to keep track of
-          predicted results with corresponding queries.
-</p></dd></dl></div>
-    </li><li name="org.apache.predictionio.controller.PAlgorithm#batchPredictBase" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="batchPredictBase(sc:org.apache.spark.SparkContext,bm:Any,qs:org.apache.spark.rdd.RDD[(Long,Q)]):org.apache.spark.rdd.RDD[(Long,P)]"></a>
-      <a id="batchPredictBase(SparkContext,Any,RDD[(Long,Q)]):RDD[(Long,P)]"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">batchPredictBase</span><span class="params">(<span name="sc">sc: <span class="extype" name="org.apache.spark.SparkContext">SparkContext</span></span>, <span name="bm">bm: <span class="extype" name="scala.Any">Any</span></span>, <span name="qs">qs: <span class="extype" name="org.apache.spark.rdd.RDD">RDD</span>[(<a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Long" class="extype" target="_top">Long</a>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.Q">Q</span>)]</span>)</span><span class="result">: <span class="extype" name="org.apache.spark.rdd.RDD">RDD</span>[(<a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Long" class="extype" target="_top">Long</a>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.P">P</span>)]</span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">:: DeveloperApi ::
-Engine developers should not use this directly.</p><div class="fullcomment"><div class="comment cmt"><p>:: DeveloperApi ::
-Engine developers should not use this directly. This is called by
-evaluation workflow to perform batch prediction.
-</p></div><dl class="paramcmts block"><dt class="param">sc</dt><dd class="cmt"><p>Spark context</p></dd><dt class="param">bm</dt><dd class="cmt"><p>Model</p></dd><dt class="param">qs</dt><dd class="cmt"><p>Batch of queries</p></dd><dt>returns</dt><dd class="cmt"><p>Batch of predicted results
-</p></dd></dl><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.predictionio.controller.PAlgorithm">PAlgorithm</a> → <a href="../core/BaseAlgorithm.html" class="extype" name="org.apache.predictionio.core.BaseAlgorithm">BaseAlgorithm</a></dd></dl></div>
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-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Attributes</dt><dd>protected[<a href="../../../../java$lang.html" class="extype" name="java.lang">java.lang</a>] </dd><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.CloneNotSupportedException]">...</span>
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-              
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-    </li><li name="scala.AnyRef#eq" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="eq(x$1:AnyRef):Boolean"></a>
-      <a id="eq(AnyRef):Boolean"></a>
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-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd></dl></div>
-    </li><li name="scala.AnyRef#equals" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="equals(x$1:Any):Boolean"></a>
-      <a id="equals(Any):Boolean"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">equals</span><span class="params">(<span name="arg0">arg0: <span class="extype" name="scala.Any">Any</span></span>)</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Boolean" class="extype" target="_top">Boolean</a></span>
-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef → Any</dd></dl></div>
-    </li><li name="scala.AnyRef#finalize" visbl="prt" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="finalize():Unit"></a>
-      <a id="finalize():Unit"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">finalize</span><span class="params">()</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Unit" class="extype" target="_top">Unit</a></span>
-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Attributes</dt><dd>protected[<a href="../../../../java$lang.html" class="extype" name="java.lang">java.lang</a>] </dd><dt>Definition Classes</dt><dd>AnyRef</dd><dt>Annotations</dt><dd>
-                <span class="name">@throws</span><span class="args">(<span>
-      
-      <span class="symbol">classOf[java.lang.Throwable]</span>
-    </span>)</span>
-              
-        </dd></dl></div>
-    </li><li name="scala.AnyRef#getClass" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="getClass():Class[_]"></a>
-      <a id="getClass():Class[_]"></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">getClass</span><span class="params">()</span><span class="result">: <span class="extype" name="java.lang.Class">Class</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.predictionio.core.BaseQuerySerializer#gsonTypeAdapterFactories" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="gsonTypeAdapterFactories:Seq[com.google.gson.TypeAdapterFactory]"></a>
-      <a id="gsonTypeAdapterFactories:Seq[TypeAdapterFactory]"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">lazy val</span>
-      </span>
-      <span class="symbol">
-        <span class="name">gsonTypeAdapterFactories</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.collection.Seq" class="extype" target="_top">Seq</a>[<span class="extype" name="com.google.gson.TypeAdapterFactory">TypeAdapterFactory</span>]</span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">:: DeveloperApi ::
-Serializer for Java query classes using Gson
-</p><div class="fullcomment"><div class="comment cmt"><p>:: DeveloperApi ::
-Serializer for Java query classes using Gson
-</p></div><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="../core/BaseQuerySerializer.html" class="extype" name="org.apache.predictionio.core.BaseQuerySerializer">BaseQuerySerializer</a></dd></dl></div>
-    </li><li name="scala.AnyRef#hashCode" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="hashCode():Int"></a>
-      <a id="hashCode():Int"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">hashCode</span><span class="params">()</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Int" class="extype" target="_top">Int</a></span>
-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef → Any</dd></dl></div>
-    </li><li name="scala.Any#isInstanceOf" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="isInstanceOf[T0]:Boolean"></a>
-      <a id="isInstanceOf[T0]:Boolean"></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">isInstanceOf</span><span class="tparams">[<span name="T0">T0</span>]</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Boolean" class="extype" target="_top">Boolean</a></span>
-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>Any</dd></dl></div>
-    </li><li name="org.apache.predictionio.controller.PAlgorithm#makePersistentModel" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="makePersistentModel(sc:org.apache.spark.SparkContext,modelId:String,algoParams:org.apache.predictionio.controller.Params,bm:Any):Any"></a>
-      <a id="makePersistentModel(SparkContext,String,Params,Any):Any"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">makePersistentModel</span><span class="params">(<span name="sc">sc: <span class="extype" name="org.apache.spark.SparkContext">SparkContext</span></span>, <span name="modelId">modelId: <span class="extype" name="scala.Predef.String">String</span></span>, <span name="algoParams">algoParams: <a href="Params.html" class="extype" name="org.apache.predictionio.controller.Params">Params</a></span>, <span name="bm">bm: <span class="extype" name="scala.Any">Any</span></span>)</span><span class="result">: <span class="extype" name="scala.Any">Any</span></span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">:: DeveloperApi ::
-Engine developers should not use this directly (read on to see how parallel
-algorithm models are persisted).</p><div class="fullcomment"><div class="comment cmt"><p>:: DeveloperApi ::
-Engine developers should not use this directly (read on to see how parallel
-algorithm models are persisted).</p><p>In general, parallel models may contain multiple RDDs. It is not easy to
-infer and persist them programmatically since these RDDs may be
-potentially huge. To persist these models, engine developers need to  mix
-the <a href="PersistentModel.html" class="extype" name="org.apache.predictionio.controller.PersistentModel">PersistentModel</a> trait into the model class and implement
-<a href="PersistentModel.html#save(id:String,params:AP,sc:org.apache.spark.SparkContext):Boolean" class="extmbr" name="org.apache.predictionio.controller.PersistentModel#save">PersistentModel.save</a>. If it returns true, a
-<a href="../workflow/PersistentModelManifest.html" class="extype" name="org.apache.predictionio.workflow.PersistentModelManifest">org.apache.predictionio.workflow.PersistentModelManifest</a> will be
-returned so that during deployment, PredictionIO will use
-<a href="PersistentModelLoader.html" class="extype" name="org.apache.predictionio.controller.PersistentModelLoader">PersistentModelLoader</a> to retrieve the model. Otherwise, Unit will be
-returned and the model will be re-trained on-the-fly.
-</p></div><dl class="paramcmts block"><dt class="param">sc</dt><dd class="cmt"><p>Spark context</p></dd><dt class="param">modelId</dt><dd class="cmt"><p>Model ID</p></dd><dt class="param">algoParams</dt><dd class="cmt"><p>Algorithm parameters that trained this model</p></dd><dt class="param">bm</dt><dd class="cmt"><p>Model</p></dd><dt>returns</dt><dd class="cmt"><p>The model itself for automatic persistence, an instance of
-        <a href="../workflow/PersistentModelManifest.html" class="extype" name="org.apache.predictionio.workflow.PersistentModelManifest">org.apache.predictionio.workflow.PersistentModelManifest</a> for manual
-        persistence, or Unit for re-training on deployment
-</p></dd></dl><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.predictionio.controller.PAlgorithm">PAlgorithm</a> → <a href="../core/BaseAlgorithm.html" class="extype" name="org.apache.predictionio.core.BaseAlgorithm">BaseAlgorithm</a></dd><dt>Annotations</dt><dd>
-                <span class="name">@DeveloperApi</span><span class="args">()</span>
-              
-        </dd></dl></div>
-    </li><li name="scala.AnyRef#ne" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="ne(x$1:AnyRef):Boolean"></a>
-      <a id="ne(AnyRef):Boolean"></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">ne</span><span class="params">(<span name="arg0">arg0: <span class="extype" name="scala.AnyRef">AnyRef</span></span>)</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Boolean" class="extype" target="_top">Boolean</a></span>
-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd></dl></div>
-    </li><li name="scala.AnyRef#notify" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="notify():Unit"></a>
-      <a id="notify():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">notify</span><span class="params">()</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Unit" class="extype" target="_top">Unit</a></span>
-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd></dl></div>
-    </li><li name="scala.AnyRef#notifyAll" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="notifyAll():Unit"></a>
-      <a id="notifyAll():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">notifyAll</span><span class="params">()</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Unit" class="extype" target="_top">Unit</a></span>
-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd></dl></div>
-    </li><li name="org.apache.predictionio.controller.PAlgorithm#predictBase" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="predictBase(baseModel:Any,query:Q):P"></a>
-      <a id="predictBase(Any,Q):P"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">predictBase</span><span class="params">(<span name="baseModel">baseModel: <span class="extype" name="scala.Any">Any</span></span>, <span name="query">query: <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.Q">Q</span></span>)</span><span class="result">: <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.P">P</span></span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">:: DeveloperApi ::
-Engine developers should not use this directly.</p><div class="fullcomment"><div class="comment cmt"><p>:: DeveloperApi ::
-Engine developers should not use this directly. Called by serving to
-perform a single prediction.
-</p></div><dl class="paramcmts block"><dt>returns</dt><dd class="cmt"><p>Predicted result
-</p></dd></dl><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.predictionio.controller.PAlgorithm">PAlgorithm</a> → <a href="../core/BaseAlgorithm.html" class="extype" name="org.apache.predictionio.core.BaseAlgorithm">BaseAlgorithm</a></dd></dl></div>
-    </li><li name="org.apache.predictionio.core.BaseAlgorithm#queryClass" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="queryClass:Class[Q]"></a>
-      <a id="queryClass:Class[Q]"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">queryClass</span><span class="result">: <span class="extype" name="scala.Predef.Class">Class</span>[<span class="extype" name="org.apache.predictionio.controller.PAlgorithm.Q">Q</span>]</span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">:: DeveloperApi ::
-Obtains the type signature of query for this algorithm
-</p><div class="fullcomment"><div class="comment cmt"><p>:: DeveloperApi ::
-Obtains the type signature of query for this algorithm
-</p></div><dl class="paramcmts block"><dt>returns</dt><dd class="cmt"><p>Type signature of query
-</p></dd></dl><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="../core/BaseAlgorithm.html" class="extype" name="org.apache.predictionio.core.BaseAlgorithm">BaseAlgorithm</a></dd></dl></div>
-    </li><li name="org.apache.predictionio.core.BaseQuerySerializer#querySerializer" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="querySerializer:org.json4s.Formats"></a>
-      <a id="querySerializer:Formats"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">lazy val</span>
-      </span>
-      <span class="symbol">
-        <span class="name">querySerializer</span><span class="result">: <span class="extype" name="org.json4s.Formats">Formats</span></span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">:: DeveloperApi ::
-Serializer for Scala query classes using
-<a href="Utils$.html#json4sDefaultFormats:org.json4s.Formats" class="extmbr" name="org.apache.predictionio.controller.Utils#json4sDefaultFormats">org.apache.predictionio.controller.Utils.json4sDefaultFormats</a>
-</p><div class="fullcomment"><div class="comment cmt"><p>:: DeveloperApi ::
-Serializer for Scala query classes using
-<a href="Utils$.html#json4sDefaultFormats:org.json4s.Formats" class="extmbr" name="org.apache.predictionio.controller.Utils#json4sDefaultFormats">org.apache.predictionio.controller.Utils.json4sDefaultFormats</a>
-</p></div><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="../core/BaseQuerySerializer.html" class="extype" name="org.apache.predictionio.core.BaseQuerySerializer">BaseQuerySerializer</a></dd></dl></div>
-    </li><li name="scala.AnyRef#synchronized" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="synchronized[T0](x$1:=&gt;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.predictionio.controller.PAlgorithm#trainBase" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="trainBase(sc:org.apache.spark.SparkContext,pd:PD):M"></a>
-      <a id="trainBase(SparkContext,PD):M"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">trainBase</span><span class="params">(<span name="sc">sc: <span class="extype" name="org.apache.spark.SparkContext">SparkContext</span></span>, <span name="pd">pd: <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.PD">PD</span></span>)</span><span class="result">: <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.M">M</span></span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">:: DeveloperApi ::
-Engine developers should not use this directly.</p><div class="fullcomment"><div class="comment cmt"><p>:: DeveloperApi ::
-Engine developers should not use this directly. This is called by workflow
-to train a model.
-</p></div><dl class="paramcmts block"><dt class="param">sc</dt><dd class="cmt"><p>Spark context</p></dd><dt class="param">pd</dt><dd class="cmt"><p>Prepared data</p></dd><dt>returns</dt><dd class="cmt"><p>Trained model
-</p></dd></dl><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.predictionio.controller.PAlgorithm">PAlgorithm</a> → <a href="../core/BaseAlgorithm.html" class="extype" name="org.apache.predictionio.core.BaseAlgorithm">BaseAlgorithm</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">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Unit" class="extype" target="_top">Unit</a></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: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Long" class="extype" target="_top">Long</a></span>, <span name="arg1">arg1: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Int" class="extype" target="_top">Int</a></span>)</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Unit" class="extype" target="_top">Unit</a></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: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Long" class="extype" target="_top">Long</a></span>)</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Unit" class="extype" target="_top">Unit</a></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>
-            </div>
-
-        
-
-        
-        </div>
-
-        <div id="inheritedMembers">
-        <div class="parent" name="org.apache.predictionio.core.BaseAlgorithm">
-              <h3>Inherited from <a href="../core/BaseAlgorithm.html" class="extype" name="org.apache.predictionio.core.BaseAlgorithm">BaseAlgorithm</a>[<span class="extype" name="org.apache.predictionio.controller.PAlgorithm.PD">PD</span>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.M">M</span>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.Q">Q</span>, <span class="extype" name="org.apache.predictionio.controller.PAlgorithm.P">P</span>]</h3>
-            </div><div class="parent" name="org.apache.predictionio.core.BaseQuerySerializer">
-              <h3>Inherited from <a href="../core/BaseQuerySerializer.html" class="extype" name="org.apache.predictionio.core.BaseQuerySerializer">BaseQuerySerializer</a></h3>
-            </div><div class="parent" name="org.apache.predictionio.core.AbstractDoer">
-              <h3>Inherited from <a href="../core/AbstractDoer.html" class="extype" name="org.apache.predictionio.core.AbstractDoer">AbstractDoer</a></h3>
-            </div><div class="parent" name="scala.Serializable">
-              <h3>Inherited from <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Serializable" class="extype" target="_top">Serializable</a></h3>
-            </div><div class="parent" name="java.io.Serializable">
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-          <div id="comment" class="fullcommenttop"><div class="comment cmt"><p>Base class of a parallel data source.</p><p>A parallel data source runs locally within a single machine, or in parallel
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-      <p class="shortcomment cmt">Implement this method to only return training data from a data source</p>
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-      <div class="fullcomment"><dl class="attributes block"> <dt>Definition Classes</dt><dd>AnyRef</dd></dl></div>
-    </li><li name="org.apache.predictionio.controller.PDataSource#readEval" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="readEval(sc:org.apache.spark.SparkContext):Seq[(TD,EI,org.apache.spark.rdd.RDD[(Q,A)])]"></a>
-      <a id="readEval(SparkContext):Seq[(TD,EI,RDD[(Q,A)])]"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">readEval</span><span class="params">(<span name="sc">sc: <span class="extype" name="org.apache.spark.SparkContext">SparkContext</span></span>)</span><span class="result">: <span class="extype" name="scala.Seq">Seq</span>[(<span class="extype" name="org.apache.predictionio.controller.PDataSource.TD">TD</span>, <span class="extype" name="org.apache.predictionio.controller.PDataSource.EI">EI</span>, <span class="extype" name="org.apache.spark.rdd.RDD">RDD</span>[(<span class="extype" name="org.apache.predictionio.controller.PDataSource.Q">Q</span>, <span class="extype" name="org.apache.predictionio.controller.PDataSource.A">A</span>)])]</span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">To provide evaluation feature for your engine, your must override this
-method to return data for evaluation from a data source.</p><div class="fullcomment"><div class="comment cmt"><p>To provide evaluation feature for your engine, your must override this
-method to return data for evaluation from a data source. Returned data can
-optionally include a sequence of query and actual value pairs for
-evaluation purpose.</p><p>The default implementation returns an empty sequence as a stub, so that
-an engine can be compiled without implementing evaluation.
-</p></div></div>
-    </li><li name="org.apache.predictionio.controller.PDataSource#readEvalBase" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="readEvalBase(sc:org.apache.spark.SparkContext):Seq[(TD,EI,org.apache.spark.rdd.RDD[(Q,A)])]"></a>
-      <a id="readEvalBase(SparkContext):Seq[(TD,EI,RDD[(Q,A)])]"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">readEvalBase</span><span class="params">(<span name="sc">sc: <span class="extype" name="org.apache.spark.SparkContext">SparkContext</span></span>)</span><span class="result">: <span class="extype" name="scala.Seq">Seq</span>[(<span class="extype" name="org.apache.predictionio.controller.PDataSource.TD">TD</span>, <span class="extype" name="org.apache.predictionio.controller.PDataSource.EI">EI</span>, <span class="extype" name="org.apache.spark.rdd.RDD">RDD</span>[(<span class="extype" name="org.apache.predictionio.controller.PDataSource.Q">Q</span>, <span class="extype" name="org.apache.predictionio.controller.PDataSource.A">A</span>)])]</span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">:: DeveloperApi ::
-Engine developer should not use this directly.</p><div class="fullcomment"><div class="comment cmt"><p>:: DeveloperApi ::
-Engine developer should not use this directly. This is called by
-evaluation workflow to read training and validation data.
-</p></div><dl class="paramcmts block"><dt class="param">sc</dt><dd class="cmt"><p>Spark context</p></dd><dt>returns</dt><dd class="cmt"><p>Sets of training data, evaluation information, queries, and actual
-        results
-</p></dd></dl><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.predictionio.controller.PDataSource">PDataSource</a> → <a href="../core/BaseDataSource.html" class="extype" name="org.apache.predictionio.core.BaseDataSource">BaseDataSource</a></dd></dl></div>
-    </li><li name="org.apache.predictionio.controller.PDataSource#readTrainingBase" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="readTrainingBase(sc:org.apache.spark.SparkContext):TD"></a>
-      <a id="readTrainingBase(SparkContext):TD"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name">readTrainingBase</span><span class="params">(<span name="sc">sc: <span class="extype" name="org.apache.spark.SparkContext">SparkContext</span></span>)</span><span class="result">: <span class="extype" name="org.apache.predictionio.controller.PDataSource.TD">TD</span></span>
-      </span>
-      </h4>
-      <p class="shortcomment cmt">:: DeveloperApi ::
-Engine developer should not use this directly.</p><div class="fullcomment"><div class="comment cmt"><p>:: DeveloperApi ::
-Engine developer should not use this directly. This is called by workflow
-to read training data.
-</p></div><dl class="paramcmts block"><dt class="param">sc</dt><dd class="cmt"><p>Spark context</p></dd><dt>returns</dt><dd class="cmt"><p>Training data
-</p></dd></dl><dl class="attributes block"> <dt>Definition Classes</dt><dd><a href="" class="extype" name="org.apache.predictionio.controller.PDataSource">PDataSource</a> → <a href="../core/BaseDataSource.html" class="extype" name="org.apache.predictionio.core.BaseDataSource">BaseDataSource</a></dd></dl></div>
-    </li><li name="scala.AnyRef#synchronized" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="synchronized[T0](x$1:=&gt;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="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">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Unit" class="extype" target="_top">Unit</a></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: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Long" class="extype" target="_top">Long</a></span>, <span name="arg1">arg1: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Int" class="extype" target="_top">Int</a></span>)</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Unit" class="extype" target="_top">Unit</a></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: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Long" class="extype" target="_top">Long</a></span>)</span><span class="result">: <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Unit" class="extype" target="_top">Unit</a></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>
-            </div>
-
-        
-
-        <div id="values" class="values members">
-              <h3>Deprecated Value Members</h3>
-              <ol><li name="org.apache.predictionio.controller.PDataSource#read" visbl="pub" data-isabs="false" fullComment="yes" group="Ungrouped">
-      <a id="read(sc:org.apache.spark.SparkContext):Seq[(TD,EI,org.apache.spark.rdd.RDD[(Q,A)])]"></a>
-      <a id="read(SparkContext):Seq[(TD,EI,RDD[(Q,A)])]"></a>
-      <h4 class="signature">
-      <span class="modifier_kind">
-        <span class="modifier"></span>
-        <span class="kind">def</span>
-      </span>
-      <span class="symbol">
-        <span class="name deprecated" title="Deprecated: (Since version 0.9.0) Use readEval() instead.">read</span><span class="params">(<span name="sc">sc: <span class="extype" name="org.apache.spark.SparkContext">SparkContext</span></span>)</span><span class="result">: <span class="extype" name="scala.Seq">Seq</span>[(<span class="extype" name="org.apache.predictionio.controller.PDataSource.TD">TD</span>, <span class="extype" name="org.apache.predictionio.controller.PDataSource.EI">EI</span>, <span class="extype" name="org.apache.spark.rdd.RDD">RDD</span>[(<span class="extype" name="org.apache.predictionio.controller.PDataSource.Q">Q</span>, <span class="extype" name="org.apache.predictionio.controller.PDataSource.A">A</span>)])]</span>
-      </span>
-      </h4>
-      <div class="fullcomment"><dl class="attributes block"> <dt>Annotations</dt><dd>
-                <span class="name">@deprecated</span>
-              
-        </dd><dt>Deprecated</dt><dd class="cmt"><p><i>(Since version 0.9.0)</i> Use readEval() instead.</p></dd></dl></div>
-    </li></ol>
-            </div>
-        </div>
-
-        <div id="inheritedMembers">
-        <div class="parent" name="org.apache.predictionio.core.BaseDataSource">
-              <h3>Inherited from <a href="../core/BaseDataSource.html" class="extype" name="org.apache.predictionio.core.BaseDataSource">BaseDataSource</a>[<span class="extype" name="org.apache.predictionio.controller.PDataSource.TD">TD</span>, <span class="extype" name="org.apache.predictionio.controller.PDataSource.EI">EI</span>, <span class="extype" name="org.apache.predictionio.controller.PDataSource.Q">Q</span>, <span class="extype" name="org.apache.predictionio.controller.PDataSource.A">A</span>]</h3>
-            </div><div class="parent" name="org.apache.predictionio.core.AbstractDoer">
-              <h3>Inherited from <a href="../core/AbstractDoer.html" class="extype" name="org.apache.predictionio.core.AbstractDoer">AbstractDoer</a></h3>
-            </div><div class="parent" name="scala.Serializable">
-              <h3>Inherited from <a href="http://www.scala-lang.org/api/2.10.6/index.html#scala.Serializable" class="extype" target="_top">Serializable</a></h3>
-            </div><div class="parent" name="java.io.Serializable">
-              <h3>Inherited from <span class="extype" name="java.io.Serializable">Serializable</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>
-            </div>
-        
-        </div>
-
-        <div id="groupedMembers">
-        <div class="group" name="Ungrouped">
-              <h3>Ungrouped</h3>
-              
-            </div>
-        </div>
-
-      </div>
-
-      <div id="tooltip"></div>
-
-      <div id="footer">  </div>
-      <script defer="defer" type="text/javascript" id="jquery-js" src="../../../../lib/jquery.js"></script><script defer="defer" type="text/javascript" id="jquery-ui-js" src="../../../../lib/jquery-ui.js"></script><script defer="defer" type="text/javascript" id="tools-tooltip-js" src="../../../../lib/tools.tooltip.js"></script><script defer="defer" type="text/javascript" id="template-js" src="../../../../lib/template.js"></script>
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-      </html>
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