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java.lang.Objectweka.classifiers.Classifier
weka.classifiers.trees.LMT
public class LMT
Classifier for building 'logistic model trees', which are classification trees with logistic regression functions at the leaves. The algorithm can deal with binary and multi-class target variables, numeric and nominal attributes and missing values.
For more information see:
Niels Landwehr, Mark Hall, Eibe Frank (2005). Logistic Model Trees. Machine Learning. 95(1-2):161-205.
Marc Sumner, Eibe Frank, Mark Hall: Speeding up Logistic Model Tree Induction. In: 9th European Conference on Principles and Practice of Knowledge Discovery in Databases, 675-683, 2005.
@article{Landwehr2005,
author = {Niels Landwehr and Mark Hall and Eibe Frank},
journal = {Machine Learning},
number = {1-2},
pages = {161-205},
title = {Logistic Model Trees},
volume = {95},
year = {2005}
}
@inproceedings{Sumner2005,
author = {Marc Sumner and Eibe Frank and Mark Hall},
booktitle = {9th European Conference on Principles and Practice of Knowledge Discovery in Databases},
pages = {675-683},
publisher = {Springer},
title = {Speeding up Logistic Model Tree Induction},
year = {2005}
}
Valid options are:
-B Binary splits (convert nominal attributes to binary ones)
-R Split on residuals instead of class values
-C Use cross-validation for boosting at all nodes (i.e., disable heuristic)
-P Use error on probabilities instead of misclassification error for stopping criterion of LogitBoost.
-I <numIterations> Set fixed number of iterations for LogitBoost (instead of using cross-validation)
-M <numInstances> Set minimum number of instances at which a node can be split (default 15)
-W <beta> Set beta for weight trimming for LogitBoost. Set to 0 (default) for no weight trimming.
-A The AIC is used to choose the best iteration.
| Field Summary |
|---|
| Fields inherited from interface weka.core.Drawable |
|---|
BayesNet, Newick, NOT_DRAWABLE, TREE |
| Constructor Summary | |
|---|---|
LMT()
Creates an instance of LMT with standard options |
|
| Method Summary | |
|---|---|
void |
buildClassifier(Instances data)
Builds the classifier. |
double |
classifyInstance(Instance instance)
Classifies an instance. |
java.lang.String |
convertNominalTipText()
Returns the tip text for this property |
double[] |
distributionForInstance(Instance instance)
Returns class probabilities for an instance. |
java.util.Enumeration |
enumerateMeasures()
Returns an enumeration of the additional measure names |
java.lang.String |
errorOnProbabilitiesTipText()
Returns the tip text for this property |
java.lang.String |
fastRegressionTipText()
Returns the tip text for this property |
Capabilities |
getCapabilities()
Returns default capabilities of the classifier. |
boolean |
getConvertNominal()
Get the value of convertNominal. |
boolean |
getErrorOnProbabilities()
Get the value of errorOnProbabilities. |
boolean |
getFastRegression()
Get the value of fastRegression. |
double |
getMeasure(java.lang.String additionalMeasureName)
Returns the value of the named measure |
int |
getMinNumInstances()
Get the value of minNumInstances. |
int |
getNumBoostingIterations()
Get the value of numBoostingIterations. |
java.lang.String[] |
getOptions()
Gets the current settings of the Classifier. |
java.lang.String |
getRevision()
Returns the revision string. |
boolean |
getSplitOnResiduals()
Get the value of splitOnResiduals. |
TechnicalInformation |
getTechnicalInformation()
Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on. |
boolean |
getUseAIC()
Get the value of useAIC. |
double |
getWeightTrimBeta()
Get the value of weightTrimBeta. |
java.lang.String |
globalInfo()
Returns a string describing classifier |
java.lang.String |
graph()
Returns graph describing the tree. |
int |
graphType()
Returns the type of graph this classifier represents. |
java.util.Enumeration |
listOptions()
Returns an enumeration describing the available options. |
static void |
main(java.lang.String[] argv)
Main method for testing this class |
int |
measureNumLeaves()
Returns the number of leaves in the tree |
int |
measureTreeSize()
Returns the size of the tree |
java.lang.String |
minNumInstancesTipText()
Returns the tip text for this property |
java.lang.String |
numBoostingIterationsTipText()
Returns the tip text for this property |
void |
setConvertNominal(boolean c)
Set the value of convertNominal. |
void |
setErrorOnProbabilities(boolean c)
Set the value of errorOnProbabilities. |
void |
setFastRegression(boolean c)
Set the value of fastRegression. |
void |
setMinNumInstances(int c)
Set the value of minNumInstances. |
void |
setNumBoostingIterations(int c)
Set the value of numBoostingIterations. |
void |
setOptions(java.lang.String[] options)
Parses a given list of options. |
void |
setSplitOnResiduals(boolean c)
Set the value of splitOnResiduals. |
void |
setUseAIC(boolean c)
Set the value of useAIC. |
void |
setWeightTrimBeta(double n)
Set the value of weightTrimBeta. |
java.lang.String |
splitOnResidualsTipText()
Returns the tip text for this property |
java.lang.String |
toString()
Returns a description of the classifier. |
java.lang.String |
useAICTipText()
Returns the tip text for this property |
java.lang.String |
weightTrimBetaTipText()
Returns the tip text for this property |
| Methods inherited from class weka.classifiers.Classifier |
|---|
debugTipText, forName, getDebug, makeCopies, makeCopy, setDebug |
| Methods inherited from class java.lang.Object |
|---|
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
|---|
public LMT()
| Method Detail |
|---|
public Capabilities getCapabilities()
getCapabilities in interface CapabilitiesHandlergetCapabilities in class ClassifierCapabilities
public void buildClassifier(Instances data)
throws java.lang.Exception
buildClassifier in class Classifierdata - the data to train with
java.lang.Exception - if classifier can't be built successfully
public double[] distributionForInstance(Instance instance)
throws java.lang.Exception
distributionForInstance in class Classifierinstance - the instance to compute the distribution for
java.lang.Exception - if distribution can't be computed successfully
public double classifyInstance(Instance instance)
throws java.lang.Exception
classifyInstance in class Classifierinstance - the instance to classify
java.lang.Exception - if instance can't be classified successfullypublic java.lang.String toString()
toString in class java.lang.Objectpublic java.util.Enumeration listOptions()
listOptions in interface OptionHandlerlistOptions in class Classifier
public void setOptions(java.lang.String[] options)
throws java.lang.Exception
-B Binary splits (convert nominal attributes to binary ones)
-R Split on residuals instead of class values
-C Use cross-validation for boosting at all nodes (i.e., disable heuristic)
-P Use error on probabilities instead of misclassification error for stopping criterion of LogitBoost.
-I <numIterations> Set fixed number of iterations for LogitBoost (instead of using cross-validation)
-M <numInstances> Set minimum number of instances at which a node can be split (default 15)
-W <beta> Set beta for weight trimming for LogitBoost. Set to 0 (default) for no weight trimming.
-A The AIC is used to choose the best iteration.
setOptions in interface OptionHandlersetOptions in class Classifieroptions - the list of options as an array of strings
java.lang.Exception - if an option is not supportedpublic java.lang.String[] getOptions()
getOptions in interface OptionHandlergetOptions in class Classifierpublic double getWeightTrimBeta()
public boolean getUseAIC()
public void setWeightTrimBeta(double n)
public void setUseAIC(boolean c)
c - Value to assign to useAIC.public boolean getConvertNominal()
public boolean getSplitOnResiduals()
public boolean getFastRegression()
public boolean getErrorOnProbabilities()
public int getNumBoostingIterations()
public int getMinNumInstances()
public void setConvertNominal(boolean c)
c - Value to assign to convertNominal.public void setSplitOnResiduals(boolean c)
c - Value to assign to splitOnResiduals.public void setFastRegression(boolean c)
c - Value to assign to fastRegression.public void setErrorOnProbabilities(boolean c)
c - Value to assign to errorOnProbabilities.public void setNumBoostingIterations(int c)
c - Value to assign to numBoostingIterations.public void setMinNumInstances(int c)
c - Value to assign to minNumInstances.public int graphType()
graphType in interface Drawable
public java.lang.String graph()
throws java.lang.Exception
graph in interface Drawablejava.lang.Exception - if graph can't be computedpublic int measureTreeSize()
public int measureNumLeaves()
public java.util.Enumeration enumerateMeasures()
enumerateMeasures in interface AdditionalMeasureProducerpublic double getMeasure(java.lang.String additionalMeasureName)
getMeasure in interface AdditionalMeasureProduceradditionalMeasureName - the name of the measure to query for its value
java.lang.IllegalArgumentException - if the named measure is not supportedpublic java.lang.String globalInfo()
public TechnicalInformation getTechnicalInformation()
getTechnicalInformation in interface TechnicalInformationHandlerpublic java.lang.String convertNominalTipText()
public java.lang.String splitOnResidualsTipText()
public java.lang.String fastRegressionTipText()
public java.lang.String errorOnProbabilitiesTipText()
public java.lang.String numBoostingIterationsTipText()
public java.lang.String minNumInstancesTipText()
public java.lang.String weightTrimBetaTipText()
public java.lang.String useAICTipText()
public java.lang.String getRevision()
getRevision in interface RevisionHandlergetRevision in class Classifierpublic static void main(java.lang.String[] argv)
argv - the commandline options
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