Package org.apache.spark.mllib.stat.correlation

Interface Correlation

public interface Correlation
Trait for correlation algorithms.

  • Method Details

    • computeCorrelation

      double computeCorrelation(RDD<Object> x, RDD<Object> y)
      Compute correlation for two datasets.
      Parameters:
      x - (undocumented)
      y - (undocumented)
      Returns:
      (undocumented)

    • computeCorrelationMatrix

      Matrix computeCorrelationMatrix(RDD<Vector> X)
      Compute the correlation matrix S, for the input matrix, where S(i, j) is the correlation between column i and j. S(i, j) can be NaN if the correlation is undefined for column i and j.
      Parameters:
      X - (undocumented)
      Returns:
      (undocumented)

    • computeCorrelationWithMatrixImpl

      double computeCorrelationWithMatrixImpl(RDD<Object> x, RDD<Object> y)
      Combine the two input RDD[Double]s into an RDD[Vector] and compute the correlation using the correlation implementation for RDD[Vector]. Can be NaN if correlation is undefined for the input vectors.
      Parameters:
      x - (undocumented)
      y - (undocumented)
      Returns:
      (undocumented)