Package weka.estimators
Interface ConditionalEstimator
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- All Superinterfaces:
RevisionHandler
- All Known Implementing Classes:
DDConditionalEstimator
,DKConditionalEstimator
,DNConditionalEstimator
,KDConditionalEstimator
,KKConditionalEstimator
,NDConditionalEstimator
,NNConditionalEstimator
public interface ConditionalEstimator extends RevisionHandler
Interface for conditional probability estimators. Example code:NNConditionalEstimator newEst = new NNConditionalEstimator(); // Create 50 random points and add them Random r = new Random(seed); for(int i = 0; i < 50; i++) { int x = Math.abs(r.nextInt() % 100); int y = Math.abs(r.nextInt() % 100); System.out.println("# " + x + " " + y); newEst.addValue(x, y, 1); } // Pick a random conditional value int cond = Math.abs(r.nextInt() % 100); System.out.println("## Conditional = " + cond); // Print the probabilities conditional on that value Estimator result = newEst.getEstimator(cond); for(int i = 0; i <= 100; i+= 5) { System.out.println(" " + i + " " + result.getProbability(i)); }
- Version:
- $Revision: 1.7 $
- Author:
- Len Trigg (trigg@cs.waikato.ac.nz)
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description void
addValue(double data, double given, double weight)
Add a new data value to the current estimator.Estimator
getEstimator(double given)
Get a probability estimator for a valuedouble
getProbability(double data, double given)
Get a probability for a value conditional on another value-
Methods inherited from interface weka.core.RevisionHandler
getRevision
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Method Detail
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addValue
void addValue(double data, double given, double weight)
Add a new data value to the current estimator.- Parameters:
data
- the new data valuegiven
- the new value that data is conditional uponweight
- the weight assigned to the data value
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getEstimator
Estimator getEstimator(double given)
Get a probability estimator for a value- Parameters:
given
- the new value that data is conditional upon- Returns:
- the estimator for the supplied value given the condition
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getProbability
double getProbability(double data, double given)
Get a probability for a value conditional on another value- Parameters:
data
- the value to estimate the probability ofgiven
- the new value that data is conditional upon- Returns:
- the estimator for the supplied value given the condition
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