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<!DOCTYPE html>
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<title>Matrix — SystemDS 3.2.0-dev documentation</title>
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<section id="matrix">
<h1>Matrix<a class="headerlink" href="#matrix" title="Link to this heading"></a></h1>
<p>A <code class="docutils literal notranslate"><span class="pre">Matrix</span></code> is represented either by an <code class="docutils literal notranslate"><span class="pre">OperationNode</span></code>, or the derived class <code class="docutils literal notranslate"><span class="pre">Matrix</span></code>.
Matrices are the most fundamental objects SystemDS operates on.</p>
<p>Although it is possible to generate matrices with the function calls or object construction specified below,
the recommended way is to use the methods defined on <code class="docutils literal notranslate"><span class="pre">SystemDSContext</span></code>.</p>
<dl class="py class">
<dt class="sig sig-object py" id="systemds.operator.Matrix">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">systemds.operator.</span></span><span class="sig-name descname"><span class="pre">Matrix</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">sds_context</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">operation</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">unnamed_input_nodes</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">Iterable</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="../../script_building/dag.html#systemds.script_building.dag.DAGNode" title="systemds.script_building.dag.DAGNode"><span class="pre">DAGNode</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">float</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">bool</span><span class="p"><span class="pre">]</span></span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">named_input_nodes</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><span class="pre">str</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><a class="reference internal" href="../../script_building/dag.html#systemds.script_building.dag.DAGNode" title="systemds.script_building.dag.DAGNode"><span class="pre">DAGNode</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">float</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">bool</span><span class="p"><span class="pre">]</span></span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">local_data</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">array</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">brackets</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">bool</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">False</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#systemds.operator.Matrix" title="Link to this definition"></a></dt>
<dd><dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.__init__">
<span class="sig-name descname"><span class="pre">__init__</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">sds_context</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">operation</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">unnamed_input_nodes</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">Iterable</span><span class="p"><span class="pre">[</span></span><a class="reference internal" href="../../script_building/dag.html#systemds.script_building.dag.DAGNode" title="systemds.script_building.dag.DAGNode"><span class="pre">DAGNode</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">float</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">bool</span><span class="p"><span class="pre">]</span></span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">named_input_nodes</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><span class="pre">str</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><a class="reference internal" href="../../script_building/dag.html#systemds.script_building.dag.DAGNode" title="systemds.script_building.dag.DAGNode"><span class="pre">DAGNode</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">float</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">bool</span><span class="p"><span class="pre">]</span></span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">local_data</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">array</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">brackets</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">bool</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">False</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.__init__" title="Link to this definition"></a></dt>
<dd><p>Create general <cite>OperationNode</cite></p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>sds_context</strong> – The SystemDS context for performing the operations</p></li>
<li><p><strong>operation</strong> – The name of the DML function to execute</p></li>
<li><p><strong>unnamed_input_nodes</strong> – inputs identified by their position, not name</p></li>
<li><p><strong>named_input_nodes</strong> – inputs with their respective parameter name</p></li>
<li><p><strong>output_type</strong> – type of the output in DML (double, matrix etc.)</p></li>
<li><p><strong>is_python_local_data</strong> – if the data is local in python e.g. Numpy arrays</p></li>
<li><p><strong>number_of_outputs</strong> – If set to other value than 1 then it is expected
that this operation node returns multiple values. If set remember to set the output_types value as well.</p></li>
<li><p><strong>output_types</strong> – The types of output in a multi output scenario.
Default is None, and means every multi output is a matrix.</p></li>
</ul>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.abs">
<span class="sig-name descname"><span class="pre">abs</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.abs" title="Link to this definition"></a></dt>
<dd><p>Calculate absolute.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.acos">
<span class="sig-name descname"><span class="pre">acos</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.acos" title="Link to this definition"></a></dt>
<dd><p>Calculate arccos.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.asin">
<span class="sig-name descname"><span class="pre">asin</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.asin" title="Link to this definition"></a></dt>
<dd><p>Calculate arcsin.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.atan">
<span class="sig-name descname"><span class="pre">atan</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.atan" title="Link to this definition"></a></dt>
<dd><p>Calculate arctan.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.cbind">
<span class="sig-name descname"><span class="pre">cbind</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">other</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.cbind" title="Link to this definition"></a></dt>
<dd><p>Column-wise matrix concatenation, by concatenating the second matrix as additional columns to the first matrix.
:param: The other matrix to bind to the right hand side.
:return: The OperationNode containing the concatenated matrices/frames.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.cholesky">
<span class="sig-name descname"><span class="pre">cholesky</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">safe</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">bool</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">False</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.cholesky" title="Link to this definition"></a></dt>
<dd><p>Computes the Cholesky decomposition of a symmetric, positive definite matrix</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>safe</strong> – default value is False, if flag is True additional checks to ensure
that the matrix is symmetric positive definite are applied, if False, checks will be skipped</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>the OperationNode representing this operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.code_line">
<span class="sig-name descname"><span class="pre">code_line</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">var_name</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">unnamed_input_vars</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Sequence</span><span class="p"><span class="pre">[</span></span><span class="pre">str</span><span class="p"><span class="pre">]</span></span></span></em>, <em class="sig-param"><span class="n"><span class="pre">named_input_vars</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><span class="pre">str</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><span class="pre">str</span><span class="p"><span class="pre">]</span></span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">str</span></span></span><a class="headerlink" href="#systemds.operator.Matrix.code_line" title="Link to this definition"></a></dt>
<dd><p>Generates the DML code line equal to the intended action of this node.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>var_name</strong> – Name of DML-variable this nodes result should be saved in</p></li>
<li><p><strong>unnamed_input_vars</strong> – all strings representing the unnamed parameters</p></li>
<li><p><strong>named_input_vars</strong> – all strings representing the named parameters (name value pairs)</p></li>
</ul>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>the DML code line that is equal to this operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.compute">
<span class="sig-name descname"><span class="pre">compute</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">verbose</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">bool</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">False</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">lineage</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">bool</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">False</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">array</span></span></span><a class="headerlink" href="#systemds.operator.Matrix.compute" title="Link to this definition"></a></dt>
<dd><p>Get result of this operation. Builds the dml script and executes it in SystemDS, before this method is called
all operations are only building the DAG without actually executing (lazy evaluation).</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>verbose</strong> – Can be activated to print additional information such as created DML-Script</p></li>
<li><p><strong>lineage</strong> – Can be activated to print lineage trace till this node</p></li>
</ul>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>the output as an python builtin data type or numpy array</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.cos">
<span class="sig-name descname"><span class="pre">cos</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.cos" title="Link to this definition"></a></dt>
<dd><p>Calculate cos.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.cosh">
<span class="sig-name descname"><span class="pre">cosh</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.cosh" title="Link to this definition"></a></dt>
<dd><p>Calculate cos.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.max">
<span class="sig-name descname"><span class="pre">max</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">axis</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="../operation_node.html#systemds.operator.OperationNode" title="systemds.operator.operation_node.OperationNode"><span class="pre">OperationNode</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.max" title="Link to this definition"></a></dt>
<dd><p>Calculate max of matrix.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>axis</strong> – can be 0 or 1 to do either row or column aggregation</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.mean">
<span class="sig-name descname"><span class="pre">mean</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">axis</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="../operation_node.html#systemds.operator.OperationNode" title="systemds.operator.operation_node.OperationNode"><span class="pre">OperationNode</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.mean" title="Link to this definition"></a></dt>
<dd><p>Calculate mean of matrix.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>axis</strong> – can be 0 or 1 to do either row or column means</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.min">
<span class="sig-name descname"><span class="pre">min</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">axis</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="../operation_node.html#systemds.operator.OperationNode" title="systemds.operator.operation_node.OperationNode"><span class="pre">OperationNode</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.min" title="Link to this definition"></a></dt>
<dd><p>Calculate max of matrix.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>axis</strong> – can be 0 or 1 to do either row or column aggregation</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.order">
<span class="sig-name descname"><span class="pre">order</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">by</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">int</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">1</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">decreasing</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">bool</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">False</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">index_return</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">bool</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">False</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.order" title="Link to this definition"></a></dt>
<dd><p>Sort by a column of the matrix X in increasing/decreasing order and returns either the index or data</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>by</strong> – sort matrix by this column number</p></li>
<li><p><strong>decreasing</strong> – If true the matrix will be sorted in decreasing order</p></li>
<li><p><strong>index_return</strong> – If true, the index numbers will be returned</p></li>
</ul>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>the OperationNode representing this operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.pass_python_data_to_prepared_script">
<span class="sig-name descname"><span class="pre">pass_python_data_to_prepared_script</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">sds</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">var_name</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">prepared_script</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">JavaObject</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">None</span></span></span><a class="headerlink" href="#systemds.operator.Matrix.pass_python_data_to_prepared_script" title="Link to this definition"></a></dt>
<dd><p>Passes data from python to the prepared script object.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>jvm</strong> – the java virtual machine object</p></li>
<li><p><strong>var_name</strong> – the variable name the data should get in java</p></li>
<li><p><strong>prepared_script</strong> – the prepared script</p></li>
</ul>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.rbind">
<span class="sig-name descname"><span class="pre">rbind</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">other</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.rbind" title="Link to this definition"></a></dt>
<dd><p>Row-wise matrix concatenation, by concatenating the second matrix as additional rows to the first matrix.
:param: The other matrix to bind to the right hand side
:return: The OperationNode containing the concatenated matrices/frames.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.replace">
<span class="sig-name descname"><span class="pre">replace</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">pattern</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="../../script_building/dag.html#systemds.script_building.dag.DAGNode" title="systemds.script_building.dag.DAGNode"><span class="pre">DAGNode</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">float</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">bool</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">replacement</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="../../script_building/dag.html#systemds.script_building.dag.DAGNode" title="systemds.script_building.dag.DAGNode"><span class="pre">DAGNode</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">float</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">bool</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.replace" title="Link to this definition"></a></dt>
<dd><p>Replace all values with replacement value</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.rev">
<span class="sig-name descname"><span class="pre">rev</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.rev" title="Link to this definition"></a></dt>
<dd><p>Reverses the rows</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p>the OperationNode representing this operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.round">
<span class="sig-name descname"><span class="pre">round</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.round" title="Link to this definition"></a></dt>
<dd><p>round all values to nearest natural number</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p>The Matrix representing the result of this operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.sin">
<span class="sig-name descname"><span class="pre">sin</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.sin" title="Link to this definition"></a></dt>
<dd><p>Calculate sin.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.sinh">
<span class="sig-name descname"><span class="pre">sinh</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.sinh" title="Link to this definition"></a></dt>
<dd><p>Calculate sin.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.sum">
<span class="sig-name descname"><span class="pre">sum</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">axis</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="../operation_node.html#systemds.operator.OperationNode" title="systemds.operator.operation_node.OperationNode"><span class="pre">OperationNode</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.sum" title="Link to this definition"></a></dt>
<dd><p>Calculate sum of matrix.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>axis</strong> – can be 0 or 1 to do either row or column sums</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.t">
<span class="sig-name descname"><span class="pre">t</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.t" title="Link to this definition"></a></dt>
<dd><p>Transposes the input</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p>the OperationNode representing this operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.tan">
<span class="sig-name descname"><span class="pre">tan</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.tan" title="Link to this definition"></a></dt>
<dd><p>Calculate tan.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.tanh">
<span class="sig-name descname"><span class="pre">tanh</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.tanh" title="Link to this definition"></a></dt>
<dd><p>Calculate tan.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.to_one_hot">
<span class="sig-name descname"><span class="pre">to_one_hot</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">num_classes</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">int</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="#systemds.operator.Matrix" title="systemds.operator.nodes.matrix.Matrix"><span class="pre">Matrix</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.to_one_hot" title="Link to this definition"></a></dt>
<dd><p>OneHot encode the matrix.</p>
<p>It is assumed that there is only one column to encode, and all values are whole numbers > 0</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>num_classes</strong> – The number of classes to encode into. max value contained in the matrix must be <= num_classes</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>The OperationNode containing the oneHotEncoded values</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.to_string">
<span class="sig-name descname"><span class="pre">to_string</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="o"><span class="pre">**</span></span><span class="n"><span class="pre">kwargs</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">Dict</span><span class="p"><span class="pre">[</span></span><span class="pre">str</span><span class="p"><span class="pre">,</span></span><span class="w"> </span><a class="reference internal" href="../../script_building/dag.html#systemds.script_building.dag.DAGNode" title="systemds.script_building.dag.DAGNode"><span class="pre">DAGNode</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">str</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">float</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">bool</span><span class="p"><span class="pre">]</span></span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="scalar.html#systemds.operator.Scalar" title="systemds.operator.Scalar"><span class="pre">Scalar</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.to_string" title="Link to this definition"></a></dt>
<dd><p>Converts the input to a string representation.
:return: <cite>Scalar</cite> containing the string.</p>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="systemds.operator.Matrix.var">
<span class="sig-name descname"><span class="pre">var</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">axis</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">int</span><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><span class="pre">None</span></span><span class="w"> </span><span class="o"><span class="pre">=</span></span><span class="w"> </span><span class="default_value"><span class="pre">None</span></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="../operation_node.html#systemds.operator.OperationNode" title="systemds.operator.operation_node.OperationNode"><span class="pre">OperationNode</span></a></span></span><a class="headerlink" href="#systemds.operator.Matrix.var" title="Link to this definition"></a></dt>
<dd><p>Calculate variance of matrix.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>axis</strong> – can be 0 or 1 to do either row or column vars</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p><cite>Matrix</cite> representing operation</p>
</dd>
</dl>
</dd></dl>
</dd></dl>
</section>
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