Package jdistlib.matrix

Class CsrMatrix

java.lang.Object
jdistlib.matrix.CsrMatrix
public final class CsrMatrix extends Object
Immutable one-based compressed-row sparse matrix compatible with Stan CSR arrays.

  • Constructor Details

    • CsrMatrix

      public CsrMatrix(int rows, int columns, double[] values, int[] columnIndices, int[] rowStarts)

  • Method Details

    • rows

      public int rows()

    • columns

      public int columns()

    • nonzeroCount

      public int nonzeroCount()

    • values

      public double[] values()

    • columnIndices

      public int[] columnIndices()

    • rowStarts

      public int[] rowStarts()

    • multiply

      public double[] multiply(double[] vector)
      Multiplies this sparse matrix by a dense vector.

    • toDense

      public double[] toDense()
      Returns a row-major dense matrix.

    • fromDense

      public static CsrMatrix fromDense(int rows, int columns, double[] dense, double tolerance)
      Converts a row-major dense matrix, omitting entries with absolute value at most tolerance.

    • toString

      public String toString()
      Overrides:
      toString in class Object