randomgenerator.html

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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="RandomGenerator(long)"><!-- --></A><H3>
RandomGenerator</H3>
<PRE>
public <B>RandomGenerator</B>(long&nbsp;seed)</PRE>
<DL>
<DD>Initializes the random number generator with the given <code>seed</code>
<P>
</DL>

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<A NAME="getGlobalRandomGenerator()"><!-- --></A><H3>
getGlobalRandomGenerator</H3>
<PRE>
public static <A HREF="../../../com/rapidminer/tools/RandomGenerator.html" title="class in com.rapidminer.tools">RandomGenerator</A> <B>getGlobalRandomGenerator</B>()</PRE>
<DL>
<DD>Returns the global random number generator.
<P>
<DD><DL>
</DL>
</DD>
</DL>
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<A NAME="getRandomGenerator(int)"><!-- --></A><H3>
getRandomGenerator</H3>
<PRE>
public static <A HREF="../../../com/rapidminer/tools/RandomGenerator.html" title="class in com.rapidminer.tools">RandomGenerator</A> <B>getRandomGenerator</B>(int&nbsp;seed)</PRE>
<DL>
<DD>Returns the global random number generator if the seed is negative and a new RandomGenerator
  with the given seed if the seed is positive or zero. This way is is possible to allow for local
  random seeds. Operators like learners or validation operators should definitely make use of such
  a local random generator.
<P>
<DD><DL>
</DL>
</DD>
</DL>
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<A NAME="getRandomGenerator(com.rapidminer.Process, int)"><!-- --></A><H3>
getRandomGenerator</H3>
<PRE>
public static <A HREF="../../../com/rapidminer/tools/RandomGenerator.html" title="class in com.rapidminer.tools">RandomGenerator</A> <B>getRandomGenerator</B>(<A HREF="../../../com/rapidminer/Process.html" title="class in com.rapidminer">Process</A>&nbsp;process,
                                                 int&nbsp;seed)</PRE>
<DL>
<DD>Returns the global random number generator if the seed is negative and a new RandomGenerator
  with the given seed if the seed is positive or zero. This way is is possible to allow for local
  random seeds. Operators like learners or validation operators should definitely make use of such
  a local random generator.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="init(com.rapidminer.Process)"><!-- --></A><H3>
init</H3>
<PRE>
public static void <B>init</B>(<A HREF="../../../com/rapidminer/Process.html" title="class in com.rapidminer">Process</A>&nbsp;process)</PRE>
<DL>
<DD>Instantiates the global random number generator and initializes it with
 the random number generator seed specified in the <code>global</code>
 section of the configuration file. Should be invoked before the
 process starts.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="nextDoubleInRange(double, double)"><!-- --></A><H3>
nextDoubleInRange</H3>
<PRE>
public double <B>nextDoubleInRange</B>(double&nbsp;lowerBound,
                                double&nbsp;upperBound)</PRE>
<DL>
<DD>Returns the next pseudorandom, uniformly distributed <code>double</code>
 value between <code>lowerBound</code> and <code>upperBound</code>
 from this random number generator's sequence (exclusive of the interval
 endpoint values).
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="nextLongInRange(long, long)"><!-- --></A><H3>
nextLongInRange</H3>
<PRE>
public long <B>nextLongInRange</B>(long&nbsp;lowerBound,
                            long&nbsp;upperBound)</PRE>
<DL>
<DD>returns the next pseudorandom, uniformly distributed <code>long</code>
 value between <code>lowerBound</code> and <code>upperBound</code>
 from this random number generator's sequence (exclusive of the interval
 endpoint values).
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="nextIntInRange(int, int)"><!-- --></A><H3>
nextIntInRange</H3>
<PRE>
public int <B>nextIntInRange</B>(int&nbsp;lowerBound,
                          int&nbsp;upperBound)</PRE>
<DL>
<DD>Returns the next pseudorandom, uniformly distributed <code>int</code>
 value between <code>lowerBound</code> and <code>upperBound</code>
 from this random number generator's sequence (lower bound inclusive, upper 
 bout exclusive).
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="nextString(int)"><!-- --></A><H3>
nextString</H3>
<PRE>
public java.lang.String <B>nextString</B>(int&nbsp;length)</PRE>
<DL>
<DD>Returns a random String of the given length.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="randomIndex(double[])"><!-- --></A><H3>
randomIndex</H3>
<PRE>
public int <B>randomIndex</B>(double[]&nbsp;probs)</PRE>
<DL>
<DD>Returns a randomly selected integer between 0 and the length of the given
 array. Uses the given probabilities to determine the index, all values in
 this array must sum up to 1.
<P>
<DD><DL>
</DL>
</DD>
</DL>
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