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authorPatrick Wendell <pwendell@apache.org>2014-07-11 17:23:23 +0000
committerPatrick Wendell <pwendell@apache.org>2014-07-11 17:23:23 +0000
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treebc20d10426c5d57e2f189305865dc2bbec447923 /site/docs/1.0.1/api/python/pyspark.mllib.linalg.Vectors-class.html
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+ <span class="breadcrumbs">
+ <a href="pyspark-module.html">Package&nbsp;pyspark</a> ::
+ <a href="pyspark.mllib-module.html">Package&nbsp;mllib</a> ::
+ <a href="pyspark.mllib.linalg-module.html">Module&nbsp;linalg</a> ::
+ Class&nbsp;Vectors
+ </span>
+ </td>
+ <td>
+ <table cellpadding="0" cellspacing="0">
+ <!-- hide/show private -->
+ <tr><td align="right"><span class="options"
+ >[<a href="frames.html" target="_top">frames</a
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+ target="_top">no&nbsp;frames</a>]</span></td></tr>
+ </table>
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+</table>
+<!-- ==================== CLASS DESCRIPTION ==================== -->
+<h1 class="epydoc">Class Vectors</h1><p class="nomargin-top"><span class="codelink"><a href="pyspark.mllib.linalg-pysrc.html#Vectors">source&nbsp;code</a></span></p>
+<pre class="base-tree">
+object --+
+ |
+ <strong class="uidshort">Vectors</strong>
+</pre>
+
+<hr />
+<p>Factory methods for working with vectors. Note that dense vectors are
+ simply represented as NumPy array objects, so there is no need to covert
+ them for use in MLlib. For sparse vectors, the factory methods in this
+ class create an MLlib-compatible type, or users can pass in SciPy's
+ <code>scipy.sparse</code> column vectors.</p>
+
+<!-- ==================== INSTANCE METHODS ==================== -->
+<a name="section-InstanceMethods"></a>
+<table class="summary" border="1" cellpadding="3"
+ cellspacing="0" width="100%" bgcolor="white">
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+ <span class="table-header">Instance Methods</span></td>
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+ <tr>
+ <td colspan="2" class="summary">
+ <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
+ <code>__delattr__</code>,
+ <code>__format__</code>,
+ <code>__getattribute__</code>,
+ <code>__hash__</code>,
+ <code>__init__</code>,
+ <code>__new__</code>,
+ <code>__reduce__</code>,
+ <code>__reduce_ex__</code>,
+ <code>__repr__</code>,
+ <code>__setattr__</code>,
+ <code>__sizeof__</code>,
+ <code>__str__</code>,
+ <code>__subclasshook__</code>
+ </p>
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+ <td align="left" colspan="2" class="table-header">
+ <span class="table-header">Static Methods</span></td>
+</tr>
+<tr>
+ <td width="15%" align="right" valign="top" class="summary">
+ <span class="summary-type">&nbsp;</span>
+ </td><td class="summary">
+ <table width="100%" cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td><span class="summary-sig"><a href="pyspark.mllib.linalg.Vectors-class.html#sparse" class="summary-sig-name">sparse</a>(<span class="summary-sig-arg">size</span>,
+ <span class="summary-sig-arg">*args</span>)</span><br />
+ Create a sparse vector, using either a dictionary, a list of
+(index, value) pairs, or two separate arrays of indices and
+values (sorted by index).</td>
+ <td align="right" valign="top">
+ <span class="codelink"><a href="pyspark.mllib.linalg-pysrc.html#Vectors.sparse">source&nbsp;code</a></span>
+
+ </td>
+ </tr>
+ </table>
+
+ </td>
+ </tr>
+<tr>
+ <td width="15%" align="right" valign="top" class="summary">
+ <span class="summary-type">&nbsp;</span>
+ </td><td class="summary">
+ <table width="100%" cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td><span class="summary-sig"><a href="pyspark.mllib.linalg.Vectors-class.html#dense" class="summary-sig-name">dense</a>(<span class="summary-sig-arg">elements</span>)</span><br />
+ Create a dense vector of 64-bit floats from a Python list.</td>
+ <td align="right" valign="top">
+ <span class="codelink"><a href="pyspark.mllib.linalg-pysrc.html#Vectors.dense">source&nbsp;code</a></span>
+
+ </td>
+ </tr>
+ </table>
+
+ </td>
+ </tr>
+</table>
+<!-- ==================== PROPERTIES ==================== -->
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+<table class="summary" border="1" cellpadding="3"
+ cellspacing="0" width="100%" bgcolor="white">
+<tr bgcolor="#70b0f0" class="table-header">
+ <td align="left" colspan="2" class="table-header">
+ <span class="table-header">Properties</span></td>
+</tr>
+ <tr>
+ <td colspan="2" class="summary">
+ <p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
+ <code>__class__</code>
+ </p>
+ </td>
+ </tr>
+</table>
+<!-- ==================== METHOD DETAILS ==================== -->
+<a name="section-MethodDetails"></a>
+<table class="details" border="1" cellpadding="3"
+ cellspacing="0" width="100%" bgcolor="white">
+<tr bgcolor="#70b0f0" class="table-header">
+ <td align="left" colspan="2" class="table-header">
+ <span class="table-header">Method Details</span></td>
+</tr>
+</table>
+<a name="sparse"></a>
+<div>
+<table class="details" border="1" cellpadding="3"
+ cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+ <table width="100%" cellpadding="0" cellspacing="0" border="0">
+ <tr valign="top"><td>
+ <h3 class="epydoc"><span class="sig"><span class="sig-name">sparse</span>(<span class="sig-arg">size</span>,
+ <span class="sig-arg">*args</span>)</span>
+ <br /><em class="fname">Static Method</em>
+ </h3>
+ </td><td align="right" valign="top"
+ ><span class="codelink"><a href="pyspark.mllib.linalg-pysrc.html#Vectors.sparse">source&nbsp;code</a></span>&nbsp;
+ </td>
+ </tr></table>
+
+ <pre class="literalblock">
+
+Create a sparse vector, using either a dictionary, a list of
+(index, value) pairs, or two separate arrays of indices and
+values (sorted by index).
+
+@param size: Size of the vector.
+@param args: Non-zero entries, as a dictionary, list of tupes,
+ or two sorted lists containing indices and values.
+
+&gt;&gt;&gt; print Vectors.sparse(4, {1: 1.0, 3: 5.5})
+[1: 1.0, 3: 5.5]
+&gt;&gt;&gt; print Vectors.sparse(4, [(1, 1.0), (3, 5.5)])
+[1: 1.0, 3: 5.5]
+&gt;&gt;&gt; print Vectors.sparse(4, [1, 3], [1.0, 5.5])
+[1: 1.0, 3: 5.5]
+
+</pre>
+ <dl class="fields">
+ </dl>
+</td></tr></table>
+</div>
+<a name="dense"></a>
+<div>
+<table class="details" border="1" cellpadding="3"
+ cellspacing="0" width="100%" bgcolor="white">
+<tr><td>
+ <table width="100%" cellpadding="0" cellspacing="0" border="0">
+ <tr valign="top"><td>
+ <h3 class="epydoc"><span class="sig"><span class="sig-name">dense</span>(<span class="sig-arg">elements</span>)</span>
+ <br /><em class="fname">Static Method</em>
+ </h3>
+ </td><td align="right" valign="top"
+ ><span class="codelink"><a href="pyspark.mllib.linalg-pysrc.html#Vectors.dense">source&nbsp;code</a></span>&nbsp;
+ </td>
+ </tr></table>
+
+ <p>Create a dense vector of 64-bit floats from a Python list. Always
+ returns a NumPy array.</p>
+<pre class="py-doctest">
+<span class="py-prompt">&gt;&gt;&gt; </span>Vectors.dense([1, 2, 3])
+<span class="py-output">array([ 1., 2., 3.])</span></pre>
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+</td></tr></table>
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