Package pycv :: Package cs :: Package ml :: Package cla :: Module score :: Class AdditiveClassifier

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Class AdditiveClassifier

ml.Predictor --+            
               |            
  cla.Classifier --+        
                   |        
cla.BinaryClassifier --+    
                       |    
       ScoringClassifier --+
                           |
                          AdditiveClassifier

Known Subclasses:: Rejector, Resetter, Shifter, boost.boosting.DiscreteBoostedClassifier

Additive Classifier

A ScoringClassifier that adds a value to the score predicted by another ScoringClassifier. The new score is supposed to give a better prediction of the output class.

Nested Classes

Inherited from ml.Predictor: EarlyPrediction

Instance Methods

__init__(self, sc=None)
Initialize the class.

source code

preceeding_score(self, input_point, *args, **kwds)
Return the input point's score from the preceeding classifier.

source code

predict(self, input_point, *args, **kwds)
Predict the output class of an input point.

source code

score(self, input_point, *args, **kwds)
Return the score of an input point.

source code

Inherited from ScoringClassifier: scores

Inherited from cla.Classifier: get_error_rates, test

Method Details

init(self, sc=None)
(Constructor)

Initialize the class.

Parameters:

sc (ScoringClassifier) - a ScoringClassifier to preceed this classifier, or None if there's no classifier to preceed

Overrides: ScoringClassifier.__init__

preceeding_score(self, input_point, *args, **kwds)

Return the input point's score from the preceeding classifier.

Returns:

score : double: the previous score of the input point

predict(self, input_point, *args, **kwds)

Predict the output class of an input point.

Overrides: ScoringClassifier.predict

score(self, input_point, *args, **kwds)

Return the score of an input point.

Parameters:

input_point (a numpy.array) - an input point

Returns:

val : double: the input point's score

Overrides: ScoringClassifier.score