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< 数据挖掘--实用机器学习技术及java实现> 一书结合数据挖掘和机器学习的知识,作者陈述了自动挖掘模式的基础理论,并且以java语言实现了具有代表性的各类数据挖掘方法.例如:class

<DD>Get whether output is to be verbose<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>true if output will be verbose</DL>
</DD>
</DL>
<HR>

<A NAME="attributeEvaluatorTipText()"><!-- --></A><H3>
attributeEvaluatorTipText</H3>
<PRE>
public java.lang.String <B>attributeEvaluatorTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property<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="setAttributeEvaluator(weka.attributeSelection.ASEvaluation)"><!-- --></A><H3>
setAttributeEvaluator</H3>
<PRE>
public void <B>setAttributeEvaluator</B>(<A HREF="../../weka/attributeSelection/ASEvaluation.html">ASEvaluation</A>&nbsp;newEvaluator)</PRE>
<DL>
<DD>Set the attribute evaluator to use for generating the ranking.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>newEvaluator</CODE> - the attribute evaluator to use.</DL>
</DD>
</DL>
<HR>

<A NAME="getAttributeEvaluator()"><!-- --></A><H3>
getAttributeEvaluator</H3>
<PRE>
public <A HREF="../../weka/attributeSelection/ASEvaluation.html">ASEvaluation</A> <B>getAttributeEvaluator</B>()</PRE>
<DL>
<DD>Get the attribute evaluator used to generate the ranking.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the evaluator used to generate the ranking.</DL>
</DD>
</DL>
<HR>

<A NAME="generateRankingTipText()"><!-- --></A><H3>
generateRankingTipText</H3>
<PRE>
public java.lang.String <B>generateRankingTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property<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="setGenerateRanking(boolean)"><!-- --></A><H3>
setGenerateRanking</H3>
<PRE>
public void <B>setGenerateRanking</B>(boolean&nbsp;doRank)</PRE>
<DL>
<DD>Records whether the user has requested a ranked list of attributes.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#setGenerateRanking(boolean)">setGenerateRanking</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html">RankedOutputSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>doRank</CODE> - true if ranking is requested</DL>
</DD>
</DL>
<HR>

<A NAME="getGenerateRanking()"><!-- --></A><H3>
getGenerateRanking</H3>
<PRE>
public boolean <B>getGenerateRanking</B>()</PRE>
<DL>
<DD>Gets whether ranking has been requested. This is used by the
 AttributeSelection module to determine if rankedAttributes()
 should be called.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#getGenerateRanking()">getGenerateRanking</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html">RankedOutputSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>true if ranking has been requested.</DL>
</DD>
</DL>
<HR>

<A NAME="numToSelectTipText()"><!-- --></A><H3>
numToSelectTipText</H3>
<PRE>
public java.lang.String <B>numToSelectTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property<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="setNumToSelect(int)"><!-- --></A><H3>
setNumToSelect</H3>
<PRE>
public void <B>setNumToSelect</B>(int&nbsp;n)</PRE>
<DL>
<DD>Specify the number of attributes to select from the ranked list
 (if generating a ranking). -1
 indicates that all attributes are to be retained.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#setNumToSelect(int)">setNumToSelect</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html">RankedOutputSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>n</CODE> - the number of attributes to retain</DL>
</DD>
</DL>
<HR>

<A NAME="getNumToSelect()"><!-- --></A><H3>
getNumToSelect</H3>
<PRE>
public int <B>getNumToSelect</B>()</PRE>
<DL>
<DD>Gets the number of attributes to be retained.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#getNumToSelect()">getNumToSelect</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html">RankedOutputSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the number of attributes to retain</DL>
</DD>
</DL>
<HR>

<A NAME="getCalculatedNumToSelect()"><!-- --></A><H3>
getCalculatedNumToSelect</H3>
<PRE>
public int <B>getCalculatedNumToSelect</B>()</PRE>
<DL>
<DD>Gets the calculated number of attributes to retain. This is the
 actual number of attributes to retain. This is the same as
 getNumToSelect if the user specifies a number which is not less
 than zero. Otherwise it should be the number of attributes in the
 (potentially transformed) data.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#getCalculatedNumToSelect()">getCalculatedNumToSelect</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html">RankedOutputSearch</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="selectionThresholdTipText()"><!-- --></A><H3>
selectionThresholdTipText</H3>
<PRE>
public java.lang.String <B>selectionThresholdTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property<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="setSelectionThreshold(double)"><!-- --></A><H3>
setSelectionThreshold</H3>
<PRE>
public void <B>setSelectionThreshold</B>(double&nbsp;threshold)</PRE>
<DL>
<DD>Set the threshold by which the AttributeSelection module can discard
 attributes.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>threshold</CODE> - the threshold.</DL>
</DD>
</DL>
<HR>

<A NAME="getSelectionThreshold()"><!-- --></A><H3>
getSelectionThreshold</H3>
<PRE>
public double <B>getSelectionThreshold</B>()</PRE>
<DL>
<DD>Returns the threshold so that the AttributeSelection module can
 discard attributes from the ranking.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="listOptions()"><!-- --></A><H3>
listOptions</H3>
<PRE>
public java.util.Enumeration <B>listOptions</B>()</PRE>
<DL>
<DD>Returns an enumeration describing the available options<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/core/OptionHandler.html#listOptions()">listOptions</A></CODE> in interface <CODE><A HREF="../../weka/core/OptionHandler.html">OptionHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>an enumeration of all the available options</DL>
</DD>
</DL>
<HR>

<A NAME="setOptions(java.lang.String[])"><!-- --></A><H3>
setOptions</H3>
<PRE>
public void <B>setOptions</B>(java.lang.String[]&nbsp;options)
                throws java.lang.Exception</PRE>
<DL>
<DD>Parses a given list of options.

 Valid options are:<p>

 -R <race type><br>
 0 = forward, 1 = backward, 2 = schemata, 3 = rank. <p>
 
 -L <significance level> <br>
 significance level to use for t-tests. <p>

 -T <threshold> <br>
 threshold for considering mean errors of two subsets the same <p>

 -F <xval type> <br>
 0 = 10 fold, 1 = leave-one-out (selected automatically for schemata race
 <p>

 -A <attribute evaluator> <br>
 the attribute evaluator to use when doing a rank search <p>

 -Q <br>
 produce a ranked list of attributes. Selecting this option forces
 the race type to be forward. Racing continues until *all* attributes
 have been selected, thus producing a ranked list of attributes. <p>

 -N <number to retain> <br>
 Specify the number of attributes to retain. Overides any threshold. 
 Use in conjunction with -Q. <p>
 
 -J <threshold> <br>
 Specify a threshold by which the AttributeSelection module can discard
 attributes. Use in conjunction with -Q. <p>

 -Z <br>
 Turn on verbose output for monitoring the search <p><DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/core/OptionHandler.html#setOptions(java.lang.String[])">setOptions</A></CODE> in interface <CODE><A HREF="../../weka/core/OptionHandler.html">OptionHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>options</CODE> - the list of options as an array of strings<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if an option is not supported</DL>
</DD>
</DL>
<HR>

<A NAME="getOptions()"><!-- --></A><H3>
getOptions</H3>
<PRE>
public java.lang.String[] <B>getOptions</B>()</PRE>
<DL>
<DD>Gets the current settings of BestFirst.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/core/OptionHandler.html#getOptions()">getOptions</A></CODE> in interface <CODE><A HREF="../../weka/core/OptionHandler.html">OptionHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>an array of strings suitable for passing to setOptions()</DL>
</DD>
</DL>
<HR>

<A NAME="search(weka.attributeSelection.ASEvaluation, weka.core.Instances)"><!-- --></A><H3>
search</H3>
<PRE>
public int[] <B>search</B>(<A HREF="../../weka/attributeSelection/ASEvaluation.html">ASEvaluation</A>&nbsp;ASEval,
                    <A HREF="../../weka/core/Instances.html">Instances</A>&nbsp;data)
             throws java.lang.Exception</PRE>
<DL>
<DD>Searches the attribute subset space by racing cross validation
 errors of competing subsets<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../weka/attributeSelection/ASSearch.html#search(weka.attributeSelection.ASEvaluation, weka.core.Instances)">search</A></CODE> in class <CODE><A HREF="../../weka/attributeSelection/ASSearch.html">ASSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ASEvaluator</CODE> - the attribute evaluator to guide the search<DD><CODE>data</CODE> - the training instances.<DT><B>Returns:</B><DD>an array (not necessarily ordered) of selected attribute indexes<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if the search can't be completed</DL>
</DD>
</DL>
<HR>

<A NAME="rankedAttributes()"><!-- --></A><H3>
rankedAttributes</H3>
<PRE>
public double[][] <B>rankedAttributes</B>()
                            throws java.lang.Exception</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html">RankedOutputSearch</A></CODE></B></DD>
<DD>Returns a X by 2 list of attribute indexes and corresponding
 evaluations from best (highest) to worst.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#rankedAttributes()">rankedAttributes</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html">RankedOutputSearch</A></CODE></DL>
</DD>
<DD>Following copied from interface: <CODE>weka.attributeSelection.RankedOutputSearch</CODE></DD>
<DD><DL>
<DT><B>Returns:</B><DD>the ranked list of attribute indexes in an array of ints<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if the ranking can't be produced</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="resetOptions()"><!-- --></A><H3>
resetOptions</H3>
<PRE>
protected void <B>resetOptions</B>()</PRE>
<DL>
<DD>Reset the search method.<DD><DL>
</DL>
</DD>
</DL>
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