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 <div class="subTitle">org.apache.sysds.api.mlcontext</div>
 <h2 title="Class MLContextUtil" class="title">Class MLContextUtil</h2>
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 <pre>public final class <span class="typeNameLabel">MLContextUtil</span>
 extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
 <div class="block">Utility class containing methods for working with the MLContext API.</div>
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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Field and Description</th>
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 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>[]</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/api/mlcontext/MLContextUtil.html#ALL_SUPPORTED_DATA_TYPES">ALL_SUPPORTED_DATA_TYPES</a></span></code>
 <div class="block">All data types supported by the MLContext API.</div>
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 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>[]</code></td>
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 <div class="block">Verify that the types of input values are supported.</div>
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 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/api/mlcontext/MLContextUtil.html#convertInputParametersForParser-java.util.Map-">convertInputParametersForParser</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;basicInputParameterMap)</code>
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 <td class="colFirst"><code>static <a href="../../../../../org/apache/sysds/runtime/instructions/cp/Data.html" title="class in org.apache.sysds.runtime.instructions.cp">Data</a></code></td>
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 <div class="block">Convert input types to internal SystemDS representations</div>
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 <div class="block">Convert input types to internal SystemDS representations</div>
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 <tr id="i6" class="altColor">
 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/sysds/api/mlcontext/MLContextUtil.html#deleteRemoveVariableInstructions-org.apache.sysds.runtime.controlprogram.Program-">deleteRemoveVariableInstructions</a></span>(<a href="../../../../../org/apache/sysds/runtime/controlprogram/Program.html" title="class in org.apache.sysds.runtime.controlprogram">Program</a>&nbsp;progam)</code>
 <div class="block">Delete the 'remove variable' instructions from a runtime program.</div>
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 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/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/sysds/api/mlcontext/MLContextUtil.html#determineOutputTypeAsString-org.apache.sysds.runtime.controlprogram.LocalVariableMap-java.lang.String-">determineOutputTypeAsString</a></span>(<a href="../../../../../org/apache/sysds/runtime/controlprogram/LocalVariableMap.html" title="class in org.apache.sysds.runtime.controlprogram">LocalVariableMap</a>&nbsp;symbolTable,
                            <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;outputName)</code>
 <div class="block">Obtain a symbol table output type as a String</div>
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 <tr id="i8" class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/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/sysds/api/mlcontext/MLContextUtil.html#displayInputs-java.lang.String-java.util.Map-org.apache.sysds.runtime.controlprogram.LocalVariableMap-">displayInputs</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name,
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 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/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/sysds/api/mlcontext/MLContextUtil.html#displayMap-java.lang.String-java.util.Map-">displayMap</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;mapName,
           <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;map)</code>
 <div class="block">Display the keys and values in a Map</div>
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 <tr id="i10" class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
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 <tr id="i11" class="rowColor">
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 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
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 <tr id="i14" class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
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 <div class="block">Is the object one of the supported basic data types? (Integer, Boolean,
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 <dd><code>minimumRecommendedSparkVersion</code> - Minimum recommended Spark version string (ie, "2.1.0").</dd>
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 <dl>
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 <dt><span class="throwsLabel">Throws:</span></dt>
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 <dl>
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 <dt><span class="throwsLabel">Throws:</span></dt>
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 <div class="block">Verify that the type of input value is supported.</div>
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 <div class="block">Is the object one of the supported basic data types? (Integer, Boolean,
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 <div class="block">Obtain the SystemDS scalar value type string equivalent of an accepted
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 <dl>
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 <dd><code>object</code> - the object type to be examined</dd>
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 <div class="block">Is the object one of the supported complex data types? (JavaRDD, RDD,
  DataFrame, Matrix, double[][], MatrixBlock, URL)</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>object</code> - the object type to be examined</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd><code>true</code> if type is a complex data type; otherwise
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 <div class="block">Converts non-string basic input parameter values to strings to pass to
  the parser.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>basicInputParameterMap</code> - map of input parameters</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>map of String/String name/value pairs</dd>
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 <div class="block">Convert input types to internal SystemDS representations</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>parameterName</code> - The name of the input parameter</dd>
 <dd><code>parameterValue</code> - The value of the input parameter</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>input in SystemDS data representation</dd>
 </dl>
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                                     <a href="../../../../../org/apache/sysds/api/mlcontext/Metadata.html" title="class in org.apache.sysds.api.mlcontext">Metadata</a>&nbsp;metadata)</pre>
 <div class="block">Convert input types to internal SystemDS representations</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>parameterName</code> - The name of the input parameter</dd>
 <dd><code>parameterValue</code> - The value of the input parameter</dd>
 <dd><code>metadata</code> - matrix/frame metadata</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>input in SystemDS data representation</dd>
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 <div class="block">If no metadata is supplied for an RDD or JavaRDD, this method can be used
  to determine whether the data appears to be matrix (or a frame)</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>line</code> - a line of the RDD</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd><code>true</code> if all the csv-separated values are numbers,
          <code>false</code> otherwise</dd>
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 <pre>public static&nbsp;boolean&nbsp;doesDataFrameLookLikeMatrix(org.apache.spark.sql.Dataset&lt;org.apache.spark.sql.Row&gt;&nbsp;df)</pre>
 <div class="block">Examine the DataFrame schema to determine whether the data appears to be
  a matrix.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>df</code> - the DataFrame</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd><code>true</code> if the DataFrame appears to be a matrix,
          <code>false</code> otherwise</dd>
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 <div class="block">Return a double-quoted string with inner single and double quotes
  escaped.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>str</code> - the original string</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>double-quoted string with inner single and double quotes escaped</dd>
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                                 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;map)</pre>
 <div class="block">Display the keys and values in a Map</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>mapName</code> - the name of the map</dd>
 <dd><code>map</code> - Map of String keys and Object values</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the keys and values in the Map as a String</dd>
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                                 <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;set)</pre>
 <div class="block">Display the values in a Set</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>setName</code> - the name of the Set</dd>
 <dd><code>set</code> - Set of String values</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the values in the Set as a String</dd>
 </dl>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;displaySymbolTable(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;name,
                                         <a href="../../../../../org/apache/sysds/runtime/controlprogram/LocalVariableMap.html" title="class in org.apache.sysds.runtime.controlprogram">LocalVariableMap</a>&nbsp;symbolTable)</pre>
 <div class="block">Display the keys and values in the symbol table</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>name</code> - the name of the symbol table</dd>
 <dd><code>symbolTable</code> - the LocalVariableMap</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the keys and values in the symbol table as a String</dd>
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 <div class="block">Display the keys and values in the symbol table</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>symbolTable</code> - the LocalVariableMap</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the keys and values in the symbol table as a String</dd>
 </dl>
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 <pre>public static&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;determineOutputTypeAsString(<a href="../../../../../org/apache/sysds/runtime/controlprogram/LocalVariableMap.html" title="class in org.apache.sysds.runtime.controlprogram">LocalVariableMap</a>&nbsp;symbolTable,
                                                  <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;outputName)</pre>
 <div class="block">Obtain a symbol table output type as a String</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>symbolTable</code> - the symbol table</dd>
 <dd><code>outputName</code> - the name of the output variable</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the symbol table output type for a variable as a String</dd>
 </dl>
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                                    <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;map,
                                    <a href="../../../../../org/apache/sysds/runtime/controlprogram/LocalVariableMap.html" title="class in org.apache.sysds.runtime.controlprogram">LocalVariableMap</a>&nbsp;symbolTable)</pre>
 <div class="block">Obtain a display of script inputs.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>name</code> - the title to display for the inputs</dd>
 <dd><code>map</code> - the map of inputs</dd>
 <dd><code>symbolTable</code> - the symbol table</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the script inputs represented as a String</dd>
 </dl>
 </li>
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                                     <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;outputNames,
                                     <a href="../../../../../org/apache/sysds/runtime/controlprogram/LocalVariableMap.html" title="class in org.apache.sysds.runtime.controlprogram">LocalVariableMap</a>&nbsp;symbolTable)</pre>
 <div class="block">Obtain a display of the script outputs.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>name</code> - the title to display for the outputs</dd>
 <dd><code>outputNames</code> - the names of the output variables</dd>
 <dd><code>symbolTable</code> - the symbol table</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the script outputs represented as a String</dd>
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                                     <a href="../../../../../org/apache/sysds/runtime/controlprogram/LocalVariableMap.html" title="class in org.apache.sysds.runtime.controlprogram">LocalVariableMap</a>&nbsp;symbolTable)</pre>
 <div class="block">Obtain a display of the script outputs.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>outputNames</code> - the names of the output variables</dd>
 <dd><code>symbolTable</code> - the symbol table</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the script outputs represented as a String</dd>
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 <div class="block">The SystemDS welcome message</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the SystemDS welcome message</dd>
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 <pre>public static&nbsp;org.apache.spark.SparkContext&nbsp;getSparkContext(<a href="../../../../../org/apache/sysds/api/mlcontext/MLContext.html" title="class in org.apache.sysds.api.mlcontext">MLContext</a>&nbsp;mlContext)</pre>
 <div class="block">Obtain the Spark Context</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>mlContext</code> - the SystemDS MLContext</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the Spark Context</dd>
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 <div class="block">Obtain the Java Spark Context</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>mlContext</code> - the SystemDS MLContext</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the Java Spark Context</dd>
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 <pre>public static&nbsp;org.apache.spark.SparkContext&nbsp;getSparkContextFromProxy()</pre>
 <div class="block">Obtain the Spark Context from the MLContextProxy</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the Spark Context</dd>
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 <pre>public static&nbsp;org.apache.spark.api.java.JavaSparkContext&nbsp;getJavaSparkContextFromProxy()</pre>
 <div class="block">Obtain the Java Spark Context from the MLContextProxy</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the Java Spark Context</dd>
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 <pre>public static&nbsp;org.apache.spark.sql.SparkSession&nbsp;getSparkSessionFromProxy()</pre>
 <div class="block">Obtain the Spark Session from the MLContextProxy</div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the Spark Session</dd>
 </dl>
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                                                         <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;variableName)</pre>
 <div class="block">Determine if the symbol table contains a FrameObject with the given
  variable name.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>symbolTable</code> - the LocalVariableMap</dd>
 <dd><code>variableName</code> - the variable name</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd><code>true</code> if the variable in the symbol table is a
          FrameObject, <code>false</code> otherwise.</dd>
 </dl>
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                                                          <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;variableName)</pre>
 <div class="block">Determine if the symbol table contains a MatrixObject with the given
  variable name.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>symbolTable</code> - the LocalVariableMap</dd>
 <dd><code>variableName</code> - the variable name</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd><code>true</code> if the variable in the symbol table is a
          MatrixObject, <code>false</code> otherwise.</dd>
 </dl>
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 <pre>public static&nbsp;void&nbsp;deleteRemoveVariableInstructions(<a href="../../../../../org/apache/sysds/runtime/controlprogram/Program.html" title="class in org.apache.sysds.runtime.controlprogram">Program</a>&nbsp;progam)</pre>
 <div class="block">Delete the 'remove variable' instructions from a runtime program.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>progam</code> - runtime program</dd>
 </dl>
 </li>
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