Spark Correlation Matrix

This node computes the correlation matrix for the selected input columns using the MLlib Statistics package.

Input ports

1. Type: Spark Data
   Spark DataFrame/RDD to compute
   Spark DataFrame/RDD to compute correlation matrix for.

Output ports

1. Type: Spark Data
   Spark DataFrame/RDD correlation matrix
   Spark DataFrame/RDD representing the correlation matrix.
2. Type: Table
   Correlation measure
   Correlation variables in a square matrix
3. Type: Correlation
   Correlation Model
   A model containing the correlation measures. This model is appropriate to be read by the Spark Correlation Filter node.