com.pervasive.datarush.analytics.cluster

Interface AggregationFunctionEvaluatorFactory

public interface AggregationFunctionEvaluatorFactory

Interface for factories that create AggregationFunctionEvaluators for AggregationFunctions.

Method Summary

Modifier and Type	Method and Description
AggregationFunctionEvaluator	evaluator(AggregationFunction aggregationFunction, CompareFunction[] compareFunctions, double[] fieldWeights, double[] missingValueWeights, double[] similarityScales, double pParameter) Creates an AggregationFunctionEvaluator instance.

Method Detail

evaluator

AggregationFunctionEvaluator evaluator(AggregationFunction aggregationFunction,
                                       CompareFunction[] compareFunctions,
                                       double[] fieldWeights,
                                       double[] missingValueWeights,
                                       double[] similarityScales,
                                       double pParameter)

Creates an AggregationFunctionEvaluator instance. Compare function, field weights, missing value weights and similarity scales at index i must correspond to cluster and data vector values at the same index, that will be passed in at the evaluation phase to the AggregationFunctionEvaluator#evaluate() method.

Parameters:

aggregationFunction - the AggregationFunction to be evaluated

compareFunctions - the CompareFunctions to measure distance/similarity between the vectors

fieldWeights - field weights for each field/its values

missingValueWeights - missing value weights for each field/its values

similarityScales - similarity scales for each field/its values

pParameter - the p-parameter, only used by the Minkowski function