element.html

数据挖掘的最常用工具。由于开源

<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>size</CODE> - the size</DL>
</DL>

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<B>Method Detail</B></FONT></TH>
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<A NAME="getOneElements(weka.core.Instances)"><!-- --></A><H3>
getOneElements</H3>
<PRE>
public static <A HREF="../../../weka/core/FastVector.html" title="class in weka.core">FastVector</A> <B>getOneElements</B>(<A HREF="../../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;instances)</PRE>
<DL>
<DD>Returns all events of the given data set as Elements containing a single 
 event. The order of events is determined by the header information of 
 the corresponding ARFF file.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instances</CODE> - the data set
<DT><B>Returns:</B><DD>the set of 1-Elements</DL>
</DD>
</DL>
<HR>

<A NAME="merge(weka.associations.gsp.Element, weka.associations.gsp.Element)"><!-- --></A><H3>
merge</H3>
<PRE>
public static <A HREF="../../../weka/associations/gsp/Element.html" title="class in weka.associations.gsp">Element</A> <B>merge</B>(<A HREF="../../../weka/associations/gsp/Element.html" title="class in weka.associations.gsp">Element</A>&nbsp;element1,
                            <A HREF="../../../weka/associations/gsp/Element.html" title="class in weka.associations.gsp">Element</A>&nbsp;element2)</PRE>
<DL>
<DD>Merges two Elements into one.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>element1</CODE> - first Element<DD><CODE>element2</CODE> - second Element
<DT><B>Returns:</B><DD>the merged Element</DL>
</DD>
</DL>
<HR>

<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public <A HREF="../../../weka/associations/gsp/Element.html" title="class in weka.associations.gsp">Element</A> <B>clone</B>()</PRE>
<DL>
<DD>Returns a deep clone of an Element.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>clone</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the cloned Element</DL>
</DD>
</DL>
<HR>

<A NAME="containsOverOneEvent()"><!-- --></A><H3>
containsOverOneEvent</H3>
<PRE>
public boolean <B>containsOverOneEvent</B>()</PRE>
<DL>
<DD>Checks if an Element contains over one event.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true, if the Element contains over one event, else false</DL>
</DD>
</DL>
<HR>

<A NAME="deleteEvent(java.lang.String)"><!-- --></A><H3>
deleteEvent</H3>
<PRE>
public void <B>deleteEvent</B>(java.lang.String&nbsp;position)</PRE>
<DL>
<DD>Deletes the first or last event of an Element.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>position</CODE> - the position of the event to be deleted (first or last)</DL>
</DD>
</DL>
<HR>

<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(java.lang.Object&nbsp;obj)</PRE>
<DL>
<DD>Checks if two Elements are equal.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>equals</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true, if the two Elements are equal, else false</DL>
</DD>
</DL>
<HR>

<A NAME="getEvents()"><!-- --></A><H3>
getEvents</H3>
<PRE>
public int[] <B>getEvents</B>()</PRE>
<DL>
<DD>Returns the events Array of an Element.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the events Array</DL>
</DD>
</DL>
<HR>

<A NAME="isContainedBy(weka.core.Instance)"><!-- --></A><H3>
isContainedBy</H3>
<PRE>
public boolean <B>isContainedBy</B>(<A HREF="../../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;instance)</PRE>
<DL>
<DD>Checks if an Element is contained by a given Instance.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instance</CODE> - the given Instance
<DT><B>Returns:</B><DD>true, if the Instance contains the Element, else false</DL>
</DD>
</DL>
<HR>

<A NAME="isEmpty()"><!-- --></A><H3>
isEmpty</H3>
<PRE>
public boolean <B>isEmpty</B>()</PRE>
<DL>
<DD>Checks if the Element contains any events.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true, if the Element contains no event, else false</DL>
</DD>
</DL>
<HR>

<A NAME="toNominalString(weka.core.Instances)"><!-- --></A><H3>
toNominalString</H3>
<PRE>
public java.lang.String <B>toNominalString</B>(<A HREF="../../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;dataSet)</PRE>
<DL>
<DD>Returns a String representation of an Element where the numeric value 
 of each event/item is represented by its respective nominal value.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>dataSet</CODE> - the corresponding data set containing the header information
<DT><B>Returns:</B><DD>the String representation</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>Returns a String representation of an Element.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the String representation</DL>
</DD>
</DL>
<HR>

<A NAME="getRevision()"><!-- --></A><H3>
getRevision</H3>
<PRE>
public java.lang.String <B>getRevision</B>()</PRE>
<DL>
<DD>Returns the revision string.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/RevisionHandler.html#getRevision()">getRevision</A></CODE> in interface <CODE><A HREF="../../../weka/core/RevisionHandler.html" title="interface in weka.core">RevisionHandler</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the revision</DL>
</DD>
</DL>
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