addnoise.html

weka是机器学习和数据挖掘领域最有影响力的开源项目之一

<A NAME="percentTipText()"><!-- --></A><H3>
percentTipText</H3>
<PRE>
public java.lang.String <B>percentTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>tip text for this property suitable for
 displaying in the explorer/experimenter gui</DL>
</DD>
</DL>
<HR>

<A NAME="getPercent()"><!-- --></A><H3>
getPercent</H3>
<PRE>
public int <B>getPercent</B>()</PRE>
<DL>
<DD>Gets the size of noise data as a percentage of the original set.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the noise data size</DL>
</DD>
</DL>
<HR>

<A NAME="setPercent(int)"><!-- --></A><H3>
setPercent</H3>
<PRE>
public void <B>setPercent</B>(int&nbsp;newPercent)</PRE>
<DL>
<DD>Sets the size of noise data, as a percentage of the original set.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>newPercent</CODE> - the subsample set size, between 0 and 100.</DL>
</DD>
</DL>
<HR>

<A NAME="attIndexSetTipText()"><!-- --></A><H3>
attIndexSetTipText</H3>
<PRE>
public java.lang.String <B>attIndexSetTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>tip text for this property suitable for
 displaying in the explorer/experimenter gui</DL>
</DD>
</DL>
<HR>

<A NAME="getAttributeIndex()"><!-- --></A><H3>
getAttributeIndex</H3>
<PRE>
public java.lang.String <B>getAttributeIndex</B>()</PRE>
<DL>
<DD>Get the index of the attribute used.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the index of the attribute</DL>
</DD>
</DL>
<HR>

<A NAME="setAttributeIndex(java.lang.String)"><!-- --></A><H3>
setAttributeIndex</H3>
<PRE>
public void <B>setAttributeIndex</B>(java.lang.String&nbsp;attIndex)</PRE>
<DL>
<DD>Sets index of the attribute used.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>attIndex</CODE> - the index of the attribute</DL>
</DD>
</DL>
<HR>

<A NAME="getCapabilities()"><!-- --></A><H3>
getCapabilities</H3>
<PRE>
public <A HREF="../../../../weka/core/Capabilities.html" title="class in weka.core">Capabilities</A> <B>getCapabilities</B>()</PRE>
<DL>
<DD>Returns the Capabilities of this filter.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../weka/core/CapabilitiesHandler.html#getCapabilities()">getCapabilities</A></CODE> in interface <CODE><A HREF="../../../../weka/core/CapabilitiesHandler.html" title="interface in weka.core">CapabilitiesHandler</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#getCapabilities()">getCapabilities</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the capabilities of this object<DT><B>See Also:</B><DD><A HREF="../../../../weka/core/Capabilities.html" title="class in weka.core"><CODE>Capabilities</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="setInputFormat(weka.core.Instances)"><!-- --></A><H3>
setInputFormat</H3>
<PRE>
public boolean <B>setInputFormat</B>(<A HREF="../../../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;instanceInfo)
                       throws java.lang.Exception</PRE>
<DL>
<DD>Sets the format of the input instances.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#setInputFormat(weka.core.Instances)">setInputFormat</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instanceInfo</CODE> - an Instances object containing the input 
 instance structure (any instances contained in the object are 
 ignored - only the structure is required).
<DT><B>Returns:</B><DD>true if the outputFormat may be collected immediately
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the input format can't be set 
 successfully</DL>
</DD>
</DL>
<HR>

<A NAME="input(weka.core.Instance)"><!-- --></A><H3>
input</H3>
<PRE>
public boolean <B>input</B>(<A HREF="../../../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;instance)
              throws java.lang.Exception</PRE>
<DL>
<DD>Input an instance for filtering.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#input(weka.core.Instance)">input</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instance</CODE> - the input instance
<DT><B>Returns:</B><DD>true if the filtered instance may now be
 collected with output().
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the input format was not set</DL>
</DD>
</DL>
<HR>

<A NAME="batchFinished()"><!-- --></A><H3>
batchFinished</H3>
<PRE>
public boolean <B>batchFinished</B>()
                      throws java.lang.Exception</PRE>
<DL>
<DD>Signify that this batch of input to the filter is finished. 
 If the filter requires all instances prior to filtering,
 output() may now be called to retrieve the filtered instances.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#batchFinished()">batchFinished</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true if there are instances pending output
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if no input structure has been defined</DL>
</DD>
</DL>
<HR>

<A NAME="addNoise(weka.core.Instances, int, int, int, boolean)"><!-- --></A><H3>
addNoise</H3>
<PRE>
public void <B>addNoise</B>(<A HREF="../../../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;instances,
                     int&nbsp;seed,
                     int&nbsp;percent,
                     int&nbsp;attIndex,
                     boolean&nbsp;useMissing)</PRE>
<DL>
<DD>add noise to the dataset
 
 a given percentage of the instances are changed in the  way, that 
 a set of instances are randomly selected using seed. The attribute 
 given by its index is changed from its current value to one of the
 other possibly ones, also randomly. This is done with leaving the
 apportion the same.  
 if m_UseMissing is true, missing value is  used as a value of its own
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instances</CODE> - is the dataset<DD><CODE>seed</CODE> - used for random function<DD><CODE>percent</CODE> - percentage of instances that are changed<DD><CODE>attIndex</CODE> - index of the attribute changed<DD><CODE>useMissing</CODE> - if true missing values are treated as extra value</DL>
</DD>
</DL>
<HR>

<A NAME="main(java.lang.String[])"><!-- --></A><H3>
main</H3>
<PRE>
public static void <B>main</B>(java.lang.String[]&nbsp;argv)</PRE>
<DL>
<DD>Main method for testing this class.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>argv</CODE> - should contain arguments to the filter: 
 use -h for help</DL>
</DD>
</DL>
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