org.apache.commons.math3.stat.descriptive
Interface WeightedEvaluation

All Known Implementing Classes:
Mean, Product, Variance

public interface WeightedEvaluation

Weighted evaluation for statistics.

Since:
2.1
Version:
$Id: WeightedEvaluation.java 1382332 2012-09-08 17:27:47Z psteitz $

Method Summary
 double evaluate(double[] values, double[] weights)
          Returns the result of evaluating the statistic over the input array, using the supplied weights.
 double evaluate(double[] values, double[] weights, int begin, int length)
          Returns the result of evaluating the statistic over the specified entries in the input array, using corresponding entries in the supplied weights array.
 

Method Detail

evaluate

double evaluate(double[] values,
                double[] weights)
                throws MathIllegalArgumentException
Returns the result of evaluating the statistic over the input array, using the supplied weights.

Parameters:
values - input array
weights - array of weights
Returns:
the value of the weighted statistic applied to the input array
Throws:
MathIllegalArgumentException - if either array is null, lengths do not match, weights contain NaN, negative or infinite values, or weights does not include at least on positive value

evaluate

double evaluate(double[] values,
                double[] weights,
                int begin,
                int length)
                throws MathIllegalArgumentException
Returns the result of evaluating the statistic over the specified entries in the input array, using corresponding entries in the supplied weights array.

Parameters:
values - the input array
weights - array of weights
begin - the index of the first element to include
length - the number of elements to include
Returns:
the value of the weighted statistic applied to the included array entries
Throws:
MathIllegalArgumentException - if either array is null, lengths do not match, indices are invalid, weights contain NaN, negative or infinite values, or weights does not include at least on positive value


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