capabilities.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

public boolean <B>handles</B>(<A HREF="../../weka/core/Capabilities.Capability.html" title="enum in weka.core">Capabilities.Capability</A>&nbsp;c)</PRE>
<DL>
<DD>returns true if the classifier handler has the specified capability
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>c</CODE> - the capability to test
<DT><B>Returns:</B><DD>true if the classifier handler has the capability</DL>
</DD>
</DL>
<HR>

<A NAME="hasDependency(weka.core.Capabilities.Capability)"><!-- --></A><H3>
hasDependency</H3>
<PRE>
public boolean <B>hasDependency</B>(<A HREF="../../weka/core/Capabilities.Capability.html" title="enum in weka.core">Capabilities.Capability</A>&nbsp;c)</PRE>
<DL>
<DD>returns true if the classifier handler has a dependency for the specified 
 capability
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>c</CODE> - the capability to test
<DT><B>Returns:</B><DD>true if the classifier handler has a dependency for the 
               capability</DL>
</DD>
</DL>
<HR>

<A NAME="hasDependencies()"><!-- --></A><H3>
hasDependencies</H3>
<PRE>
public boolean <B>hasDependencies</B>()</PRE>
<DL>
<DD>Checks whether there are any dependencies at all
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true if there is at least one dependency for a capability</DL>
</DD>
</DL>
<HR>

<A NAME="getFailReason()"><!-- --></A><H3>
getFailReason</H3>
<PRE>
public java.lang.Exception <B>getFailReason</B>()</PRE>
<DL>
<DD>returns the reason why the tests failed, is null if tests succeeded
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the reason why the tests failed</DL>
</DD>
</DL>
<HR>

<A NAME="test(weka.core.Attribute)"><!-- --></A><H3>
test</H3>
<PRE>
public boolean <B>test</B>(<A HREF="../../weka/core/Attribute.html" title="class in weka.core">Attribute</A>&nbsp;att)</PRE>
<DL>
<DD>Test the given attribute, whether it can be processed by the handler,
 given its capabilities. The method assumes that the specified attribute
 is not the class attribute.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>att</CODE> - the attribute to test
<DT><B>Returns:</B><DD>true if all the tests succeeded<DT><B>See Also:</B><DD><A HREF="../../weka/core/Capabilities.html#test(weka.core.Attribute, boolean)"><CODE>test(Attribute, boolean)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="test(weka.core.Attribute, boolean)"><!-- --></A><H3>
test</H3>
<PRE>
public boolean <B>test</B>(<A HREF="../../weka/core/Attribute.html" title="class in weka.core">Attribute</A>&nbsp;att,
                    boolean&nbsp;isClass)</PRE>
<DL>
<DD>Test the given attribute, whether it can be processed by the handler,
 given its capabilities.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>att</CODE> - the attribute to test<DD><CODE>isClass</CODE> - whether this attribute is the class attribute
<DT><B>Returns:</B><DD>true if all the tests succeeded<DT><B>See Also:</B><DD><A HREF="../../weka/core/Capabilities.html#m_AttributeTest"><CODE>m_AttributeTest</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="test(weka.core.Instances)"><!-- --></A><H3>
test</H3>
<PRE>
public boolean <B>test</B>(<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;data)</PRE>
<DL>
<DD>Tests the given data, whether it can be processed by the handler,
 given its capabilities. Classifiers implementing the 
 <code>MultiInstanceCapabilitiesHandler</code> interface are checked 
 automatically for their multi-instance Capabilities (if no bags, then
 only the bag-structure, otherwise only the first bag).
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - the data to test
<DT><B>Returns:</B><DD>true if all the tests succeeded<DT><B>See Also:</B><DD><A HREF="../../weka/core/Capabilities.html#test(weka.core.Instances, int, int)"><CODE>test(Instances, int, int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="test(weka.core.Instances, int, int)"><!-- --></A><H3>
test</H3>
<PRE>
public boolean <B>test</B>(<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;data,
                    int&nbsp;fromIndex,
                    int&nbsp;toIndex)</PRE>
<DL>
<DD>Tests a certain range of attributes of the given data, whether it can be 
 processed by the handler, given its capabilities. Classifiers 
 implementing the <code>MultiInstanceCapabilitiesHandler</code> interface 
 are checked automatically for their multi-instance Capabilities (if no 
 bags, then only the bag-structure, otherwise only the first bag).
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - the data to test<DD><CODE>fromIndex</CODE> - the range of attributes - start (incl.)<DD><CODE>toIndex</CODE> - the range of attributes - end (incl.)
<DT><B>Returns:</B><DD>true if all the tests succeeded<DT><B>See Also:</B><DD><A HREF="../../weka/core/MultiInstanceCapabilitiesHandler.html" title="interface in weka.core"><CODE>MultiInstanceCapabilitiesHandler</CODE></A>, 
<A HREF="../../weka/core/Capabilities.html#m_InstancesTest"><CODE>m_InstancesTest</CODE></A>, 
<A HREF="../../weka/core/Capabilities.html#m_MissingValuesTest"><CODE>m_MissingValuesTest</CODE></A>, 
<A HREF="../../weka/core/Capabilities.html#m_MissingClassValuesTest"><CODE>m_MissingClassValuesTest</CODE></A>, 
<A HREF="../../weka/core/Capabilities.html#m_MinimumNumberInstancesTest"><CODE>m_MinimumNumberInstancesTest</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="testWithFail(weka.core.Attribute)"><!-- --></A><H3>
testWithFail</H3>
<PRE>
public void <B>testWithFail</B>(<A HREF="../../weka/core/Attribute.html" title="class in weka.core">Attribute</A>&nbsp;att)
                  throws java.lang.Exception</PRE>
<DL>
<DD>tests the given attribute by calling the test(Attribute,boolean) method 
 and throws an exception if the test fails. The method assumes that the
 specified attribute is not the class attribute.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>att</CODE> - the attribute to test
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - in case the attribute doesn't pass the tests<DT><B>See Also:</B><DD><A HREF="../../weka/core/Capabilities.html#test(weka.core.Attribute, boolean)"><CODE>test(Attribute,boolean)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="testWithFail(weka.core.Attribute, boolean)"><!-- --></A><H3>
testWithFail</H3>
<PRE>
public void <B>testWithFail</B>(<A HREF="../../weka/core/Attribute.html" title="class in weka.core">Attribute</A>&nbsp;att,
                         boolean&nbsp;isClass)
                  throws java.lang.Exception</PRE>
<DL>
<DD>tests the given attribute by calling the test(Attribute,boolean) method 
 and throws an exception if the test fails.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>att</CODE> - the attribute to test<DD><CODE>isClass</CODE> - whether this attribute is the class attribute
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - in case the attribute doesn't pass the tests<DT><B>See Also:</B><DD><A HREF="../../weka/core/Capabilities.html#test(weka.core.Attribute, boolean)"><CODE>test(Attribute,boolean)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="testWithFail(weka.core.Instances, int, int)"><!-- --></A><H3>
testWithFail</H3>
<PRE>
public void <B>testWithFail</B>(<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;data,
                         int&nbsp;fromIndex,
                         int&nbsp;toIndex)
                  throws java.lang.Exception</PRE>
<DL>
<DD>tests the given data by calling the test(Instances,int,int) method and 
 throws an exception if the test fails.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - the data to test<DD><CODE>fromIndex</CODE> - the range of attributes - start (incl.)<DD><CODE>toIndex</CODE> - the range of attributes - end (incl.)
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - in case the data doesn't pass the tests<DT><B>See Also:</B><DD><A HREF="../../weka/core/Capabilities.html#test(weka.core.Instances, int, int)"><CODE>test(Instances,int,int)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="testWithFail(weka.core.Instances)"><!-- --></A><H3>
testWithFail</H3>
<PRE>
public void <B>testWithFail</B>(<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;data)
                  throws java.lang.Exception</PRE>
<DL>
<DD>tests the given data by calling the test(Instances) method and throws 
 an exception if the test fails.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - the data to test
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - in case the data doesn't pass the tests<DT><B>See Also:</B><DD><A HREF="../../weka/core/Capabilities.html#test(weka.core.Instances)"><CODE>test(Instances)</CODE></A></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 the capabilities
<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>a string representation of this object</DL>
</DD>
</DL>
<HR>

<A NAME="forInstances(weka.core.Instances)"><!-- --></A><H3>
forInstances</H3>
<PRE>
public static <A HREF="../../weka/core/Capabilities.html" title="class in weka.core">Capabilities</A> <B>forInstances</B>(<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;data)
                                 throws java.lang.Exception</PRE>
<DL>
<DD>returns a Capabilities object specific for this data. The multi-instance
 capability is not checked as well as the minimum number of instances
 is not set.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - the data to base the capabilities on
<DT><B>Returns:</B><DD>a data-specific capabilities object
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - in case an error occurrs, e.g., an unknown attribute 
                        type</DL>
</DD>
</DL>
<HR>

<A NAME="forInstances(weka.core.Instances, boolean)"><!-- --></A><H3>
forInstances</H3>
<PRE>
public static <A HREF="../../weka/core/Capabilities.html" title="class in weka.core">Capabilities</A> <B>forInstances</B>(<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;data,
                                        boolean&nbsp;multi)
                                 throws java.lang.Exception</PRE>
<DL>
<DD>returns a Capabilities object specific for this data. The minimum number 
 of instances is not set, the check for multi-instance data is optional.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - the data to base the capabilities on<DD><CODE>multi</CODE> - if true then the structure is checked, too
<DT><B>Returns:</B><DD>a data-specific capabilities object
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - in case an error occurrs, e.g., an unknown attribute 
                        type</DL>
</DD>
</DL>
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