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java.lang.Objectweka.estimators.Estimator
weka.estimators.DiscreteEstimator
public class DiscreteEstimator
Simple symbolic probability estimator based on symbol counts.
Constructor Summary | |
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DiscreteEstimator(int numSymbols,
boolean laplace)
Constructor |
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DiscreteEstimator(int nSymbols,
double fPrior)
Constructor |
Method Summary | |
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void |
addValue(double data,
double weight)
Add a new data value to the current estimator. |
Capabilities |
getCapabilities()
Returns default capabilities of the classifier. |
double |
getCount(double data)
Get the count for a value |
int |
getNumSymbols()
Gets the number of symbols this estimator operates with |
double |
getProbability(double data)
Get a probability estimate for a value |
java.lang.String |
getRevision()
Returns the revision string. |
double |
getSumOfCounts()
Get the sum of all the counts |
static void |
main(java.lang.String[] argv)
Main method for testing this class. |
java.lang.String |
toString()
Display a representation of this estimator |
Methods inherited from class weka.estimators.Estimator |
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addValues, addValues, addValues, addValues, buildEstimator, buildEstimator, clone, debugTipText, equals, forName, getDebug, getOptions, listOptions, makeCopies, makeCopy, setDebug, setOptions, testCapabilities |
Methods inherited from class java.lang.Object |
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getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public DiscreteEstimator(int numSymbols, boolean laplace)
numSymbols
- the number of possible symbols (remember to include 0)laplace
- if true, counts will be initialised to 1public DiscreteEstimator(int nSymbols, double fPrior)
nSymbols
- the number of possible symbols (remember to include 0)fPrior
- value with which counts will be initialisedMethod Detail |
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public void addValue(double data, double weight)
addValue
in interface IncrementalEstimator
addValue
in class Estimator
data
- the new data valueweight
- the weight assigned to the data valuepublic double getProbability(double data)
getProbability
in class Estimator
data
- the value to estimate the probability of
public int getNumSymbols()
public double getCount(double data)
data
- the value to get the count of
public double getSumOfCounts()
public java.lang.String toString()
toString
in class java.lang.Object
public Capabilities getCapabilities()
getCapabilities
in interface CapabilitiesHandler
getCapabilities
in class Estimator
Capabilities
public java.lang.String getRevision()
getRevision
in interface RevisionHandler
public static void main(java.lang.String[] argv)
argv
- should contain a sequence of integers which
will be treated as symbolic.
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