Cutoff.
- Version:
- $Revision: 1.16 $
- Author:
- Mark Hall
- See Also:
Clusterer
,
OptionHandler
,
Drawable
,
Serialized Form
Nested Class Summary |
private class |
Cobweb.CNode
Inner class handling node operations for Cobweb. |
Field Summary |
protected double |
m_acuity
Acuity (minimum standard deviation). |
protected Cobweb.CNode |
m_cobwebTree
Holds the root of the Cobweb tree. |
protected double |
m_cutoff
Cutoff (minimum category utility). |
protected static double |
m_normal
Normal constant. |
protected int |
m_numberMerges
|
protected int |
m_numberOfClusters
Number of clusters (nodes in the tree). |
protected int |
m_numberSplits
|
protected boolean |
m_saveInstances
Output instances in graph representation of Cobweb tree (Allows
instances at nodes in the tree to be visualized in the Explorer). |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
m_normal
protected static final double m_normal
- Normal constant.
m_acuity
protected double m_acuity
- Acuity (minimum standard deviation).
m_cutoff
protected double m_cutoff
- Cutoff (minimum category utility).
m_cobwebTree
protected Cobweb.CNode m_cobwebTree
- Holds the root of the Cobweb tree.
m_numberOfClusters
protected int m_numberOfClusters
- Number of clusters (nodes in the tree).
m_numberSplits
protected int m_numberSplits
m_numberMerges
protected int m_numberMerges
m_saveInstances
protected boolean m_saveInstances
- Output instances in graph representation of Cobweb tree (Allows
instances at nodes in the tree to be visualized in the Explorer).
Cobweb
public Cobweb()
buildClusterer
public void buildClusterer(Instances data)
throws java.lang.Exception
- Builds the clusterer.
- Specified by:
buildClusterer
in class Clusterer
- Parameters:
data
- the training instances.
- Throws:
java.lang.Exception
- if something goes wrong.
clusterInstance
public int clusterInstance(Instance instance)
throws java.lang.Exception
- Classifies a given instance.
- Overrides:
clusterInstance
in class Clusterer
- Parameters:
instance
- the instance to be assigned to a cluster
- Returns:
- the number of the assigned cluster as an interger
if the class is enumerated, otherwise the predicted value
- Throws:
java.lang.Exception
- if instance could not be classified
successfully
numberOfClusters
public int numberOfClusters()
throws java.lang.Exception
- Returns the number of clusters.
- Specified by:
numberOfClusters
in class Clusterer
- Returns:
- the number of clusters generated for a training dataset.
- Throws:
java.lang.Exception
- if something goes wrong.
addInstance
public void addInstance(Instance newInstance)
throws java.lang.Exception
- Adds an instance to the Cobweb tree.
- Parameters:
newInstance
- the instance to be added
- Throws:
java.lang.Exception
- if something goes wrong
listOptions
public java.util.Enumeration listOptions()
- Returns an enumeration describing the available options.
- Specified by:
listOptions
in interface OptionHandler
- Returns:
- an enumeration of all the available options.
setOptions
public void setOptions(java.lang.String[] options)
throws java.lang.Exception
- Parses a given list of options.
Valid options are:
-A
Acuity.
-C
Cutoff.
- Specified by:
setOptions
in interface OptionHandler
- Parameters:
options
- the list of options as an array of strings
- Throws:
java.lang.Exception
- if an option is not supported
acuityTipText
public java.lang.String acuityTipText()
- Returns the tip text for this property
- Returns:
- tip text for this property suitable for
displaying in the explorer/experimenter gui
setAcuity
public void setAcuity(double a)
- set the acuity.
- Parameters:
a
- the acuity value
getAcuity
public double getAcuity()
- get the acuity value
- Returns:
- the acuity
cutoffTipText
public java.lang.String cutoffTipText()
- Returns the tip text for this property
- Returns:
- tip text for this property suitable for
displaying in the explorer/experimenter gui
setCutoff
public void setCutoff(double c)
- set the cutoff
- Parameters:
c
- the cutof
getCutoff
public double getCutoff()
- get the cutoff
- Returns:
- the cutoff
saveInstanceDataTipText
public java.lang.String saveInstanceDataTipText()
- Returns the tip text for this property
- Returns:
- tip text for this property suitable for
displaying in the explorer/experimenter gui
getSaveInstanceData
public boolean getSaveInstanceData()
- Get the value of saveInstances.
- Returns:
- Value of saveInstances.
setSaveInstanceData
public void setSaveInstanceData(boolean newsaveInstances)
- Set the value of saveInstances.
- Parameters:
newsaveInstances
- Value to assign to saveInstances.
getOptions
public java.lang.String[] getOptions()
- Gets the current settings of Cobweb.
- Specified by:
getOptions
in interface OptionHandler
- Returns:
- an array of strings suitable for passing to setOptions()
toString
public java.lang.String toString()
- Returns a description of the clusterer as a string.
- Returns:
- a string describing the clusterer.
graphType
public int graphType()
- Returns the type of graphs this class
represents
- Specified by:
graphType
in interface Drawable
- Returns:
- Drawable.TREE
graph
public java.lang.String graph()
throws java.lang.Exception
- Generates the graph string of the Cobweb tree
- Specified by:
graph
in interface Drawable
- Returns:
- a
String
value
- Throws:
java.lang.Exception
- if an error occurs
main
public static void main(java.lang.String[] argv)