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java.lang.Objectorg.knime.base.util.math.StatisticUtils
public final class StatisticUtils
Implements basic statistical functions.
Method Summary | |
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static double[][] |
covariance(double[][] dataMatrix)
Calculates the covariance matrix for the given input matrix. |
static double[] |
mean(double[][] matrix)
Calculates the mean for each column of the given input matrix. |
static double[] |
standardDeviation(double[][] matrix)
Calculates the standard deviation for each column of the given input matrix. |
static double[] |
variance(double[][] matrix)
Calculates the variance for each column of the given input matrix. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public static double[][] covariance(double[][] dataMatrix)
dataMatrix
- The input data matrix. The first dimension represents
data rows, the second dimension the columns (attributes).
public static double[] standardDeviation(double[][] matrix)
matrix
- the input matrix
public static double[] variance(double[][] matrix)
matrix
- the input matrix
public static double[] mean(double[][] matrix)
matrix
- the input matrix
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