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- /**
- * @file VectorStatistics.h
- * @brief B. P. Welford Computation of Mean and Variance download at: http://www.johndcook.com/standard_deviation.html
- * @author Michael Koch
- * @date 18/02/2009
- */
- #ifndef VectorStatisticsINCLUDE
- #define VectorStatisticsINCLUDE
- #include "core/vector/VectorT.h"
- #include "core/vector/MatrixT.h"
- namespace OBJREC
- {
- /** @brief online statistics */
- class VectorStatistics
- {
- public:
- VectorStatistics(const NICE::Vector &data,bool compute=true);
- ~VectorStatistics();
- void calculateStatistics();
- void initVariables();
- void setData(const NICE::Vector &data);
- void setMean();
- void setMedian();
- void setVariance();
- void setSkewness();
- void setKurtosis();
- void setEntropy();
- void setNormalizedEntropy();
-
- double getMean();
- double getMedian();
- double getVariance();
- double getStandardDeviation();
- double getSkewness();
- double getKurtosis();
- double getEntropy();
- double getNormalizedEntropy();
-
- static double computeEntropy(const NICE::Vector &data);
- static double computeNormalizedEntropy(const NICE::Vector &data);
- static double computeMean(const NICE::Vector &data);
- static double computeMedian(const NICE::Vector &data);
- static double computeVariance(const NICE::Vector &data);
- static double computeStandardDeviation(const NICE::Vector &data);
- static double computeSkew(const NICE::Vector &data);
- static double computeKurtosis(const NICE::Vector &data);
- private:
- NICE::Vector datavector;
- double mean, med;
- double var, skew, kurt;
- double entropy,normalizedentropy;
- bool meancalculated, mediancalculated, varcalculated, stdcalculated,
- skewcalculated, kurtcalculated,entropycalculated,normalizedentropycalculated;
- private:
- };
- }
- #endif
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