org.apache.spark.mllib.stat

MultivariateStatisticalSummary

trait MultivariateStatisticalSummary extends AnyRef

Trait for multivariate statistical summary of a data matrix.

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  1. abstract def count: Long

    Sample size.

  2. abstract def max: Vector

    Maximum value of each column.

  3. abstract def mean: Vector

    Sample mean vector.

  4. abstract def min: Vector

    Minimum value of each column.

  5. abstract def numNonzeros: Vector

    Number of nonzero elements (including explicitly presented zero values) in each column.

  6. abstract def variance: Vector

    Sample variance vector.

    Sample variance vector. Should return a zero vector if the sample size is 1.

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