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<div class="subTitle">org.eclipse.january.dataset</div>
<h2 title="Class Random" class="title">Class Random</h2>
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<pre>public class <a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.29">Random</a>
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">Class to hold methods to create random datasets
Emulates numpy.random</div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#Random--">Random</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/DoubleDataset.html" title="class in org.eclipse.january.dataset">DoubleDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#exponential-double-int...-">exponential</a></span>(double&nbsp;beta,
int...&nbsp;shape)</code>&nbsp;</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/ILazyDataset.html" title="interface in org.eclipse.january.dataset">ILazyDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#lazyRand-int...-">lazyRand</a></span>(int...&nbsp;shape)</code>&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/ILazyDataset.html" title="interface in org.eclipse.january.dataset">ILazyDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#lazyRand-int-java.lang.String-int...-">lazyRand</a></span>(int&nbsp;dtype,
<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,
int...&nbsp;shape)</code>&nbsp;</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/ILazyDataset.html" title="interface in org.eclipse.january.dataset">ILazyDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#lazyRand-java.lang.String-int...-">lazyRand</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,
int...&nbsp;shape)</code>&nbsp;</td>
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<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/IntegerDataset.html" title="class in org.eclipse.january.dataset">IntegerDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#poisson-double-int...-">poisson</a></span>(double&nbsp;lam,
int...&nbsp;shape)</code>&nbsp;</td>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/DoubleDataset.html" title="class in org.eclipse.january.dataset">DoubleDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#rand-double-double-int...-">rand</a></span>(double&nbsp;low,
double&nbsp;high,
int...&nbsp;shape)</code>&nbsp;</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/DoubleDataset.html" title="class in org.eclipse.january.dataset">DoubleDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#rand-int...-">rand</a></span>(int...&nbsp;shape)</code>&nbsp;</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/IntegerDataset.html" title="class in org.eclipse.january.dataset">IntegerDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#randint-int-int-int:A-">randint</a></span>(int&nbsp;low,
int&nbsp;high,
int[]&nbsp;shape)</code>&nbsp;</td>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/DoubleDataset.html" title="class in org.eclipse.january.dataset">DoubleDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#randn-double-double-int...-">randn</a></span>(double&nbsp;mean,
double&nbsp;std,
int...&nbsp;shape)</code>&nbsp;</td>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/DoubleDataset.html" title="class in org.eclipse.january.dataset">DoubleDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#randn-int...-">randn</a></span>(int...&nbsp;shape)</code>&nbsp;</td>
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<tr id="i10" class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/IntegerDataset.html" title="class in org.eclipse.january.dataset">IntegerDataset</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#random_integers-int-int-int:A-">random_integers</a></span>(int&nbsp;low,
int&nbsp;high,
int[]&nbsp;shape)</code>&nbsp;</td>
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<tr id="i11" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#seed-int-">seed</a></span>(int&nbsp;seed)</code>&nbsp;</td>
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<tr id="i12" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#seed-int:A-">seed</a></span>(int[]&nbsp;seed)</code>&nbsp;</td>
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<tr id="i13" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/eclipse/january/dataset/Random.html#seed-long-">seed</a></span>(long&nbsp;seed)</code>&nbsp;</td>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h4>Random</h4>
<pre>public&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.29">Random</a>()</pre>
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<pre>public static&nbsp;void&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.36">seed</a>(int&nbsp;seed)</pre>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>seed</code> - </dd>
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<pre>public static&nbsp;void&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.43">seed</a>(int[]&nbsp;seed)</pre>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>seed</code> - </dd>
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<pre>public static&nbsp;void&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.50">seed</a>(long&nbsp;seed)</pre>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>seed</code> - </dd>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/DoubleDataset.html" title="class in org.eclipse.january.dataset">DoubleDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.58">rand</a>(int...&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an array of values sampled from a uniform distribution between 0 (inclusive) and 1 (exclusive)</dd>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/DoubleDataset.html" title="class in org.eclipse.january.dataset">DoubleDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.75">rand</a>(double&nbsp;low,
double&nbsp;high,
int...&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>low</code> - </dd>
<dd><code>high</code> - </dd>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an array of values sampled from a uniform distribution between low and high (both exclusive)</dd>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/DoubleDataset.html" title="class in org.eclipse.january.dataset">DoubleDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.93">randn</a>(int...&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an array of values sampled from a Gaussian distribution with mean 0 and variance 1
(The term Gaussian here is a description of a shape of data taken from the mathematician of the
same name Carl Friedrich Gauss http://en.wikipedia.org/wiki/Carl_Friedrich_Gauss born in 1777.)</dd>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/DoubleDataset.html" title="class in org.eclipse.january.dataset">DoubleDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.110">randn</a>(double&nbsp;mean,
double&nbsp;std,
int...&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>mean</code> - </dd>
<dd><code>std</code> - standard deviation</dd>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an array of values sampled from a Gaussian distribution with given mean and standard deviation</dd>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/IntegerDataset.html" title="class in org.eclipse.january.dataset">IntegerDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.127">randint</a>(int&nbsp;low,
int&nbsp;high,
int[]&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>low</code> - </dd>
<dd><code>high</code> - </dd>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an array of values sampled from a discrete uniform distribution in range [low, high)</dd>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/IntegerDataset.html" title="class in org.eclipse.january.dataset">IntegerDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.137">random_integers</a>(int&nbsp;low,
int&nbsp;high,
int[]&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>low</code> - </dd>
<dd><code>high</code> - </dd>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an array of values sampled from a discrete uniform distribution in range [low, high]</dd>
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<h4>exponential</h4>
<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/DoubleDataset.html" title="class in org.eclipse.january.dataset">DoubleDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.159">exponential</a>(double&nbsp;beta,
int...&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>beta</code> - </dd>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an array of values sampled from an exponential distribution with mean beta</dd>
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<h4>poisson</h4>
<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/IntegerDataset.html" title="class in org.eclipse.january.dataset">IntegerDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.175">poisson</a>(double&nbsp;lam,
int...&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>lam</code> - </dd>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an array of values sampled from an exponential distribution with mean lambda</dd>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/ILazyDataset.html" title="interface in org.eclipse.january.dataset">ILazyDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.190">lazyRand</a>(int...&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a lazy dataset with uniformly distributed random numbers</dd>
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<h4>lazyRand</h4>
<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/ILazyDataset.html" title="interface in org.eclipse.january.dataset">ILazyDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.199">lazyRand</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>&nbsp;name,
int...&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>name</code> - </dd>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a lazy dataset with uniformly distributed random numbers</dd>
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<h4>lazyRand</h4>
<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/ILazyDataset.html" title="interface in org.eclipse.january.dataset">ILazyDataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Random.html#line.209">lazyRand</a>(int&nbsp;dtype,
<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,
int...&nbsp;shape)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>dtype</code> - </dd>
<dd><code>name</code> - </dd>
<dd><code>shape</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a lazy dataset with uniformly distributed random numbers</dd>
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