Package org.apache.sysds.runtime.matrix.data

## Class RandomMatrixGenerator

- java.lang.Object
- - org.apache.sysds.runtime.matrix.data.RandomMatrixGenerator

-     public class RandomMatrixGenerator
      extends Object

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class | Description
    --- | --- | ---
    `static class` | `RandomMatrixGenerator.PDF` | Types of Probability density functions

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `RandomMatrixGenerator()` |
    `RandomMatrixGenerator​(String pdfStr, int r, int c, int blen, double sp, double min, double max)` | Instantiates a Random number generator
    `RandomMatrixGenerator​(RandomMatrixGenerator.PDF pdf, int r, int c, int blen, double sp)` | Instantiates a Random number generator
    `RandomMatrixGenerator​(RandomMatrixGenerator.PDF pdf, int r, int c, int blen, double sp, double min, double max)` | Instantiates a Random number generator
    `RandomMatrixGenerator​(RandomMatrixGenerator.PDF pdf, int r, int c, int blen, double sp, double min, double max, double mean)` | Instantiates a Random number generator with a specific poisson mean

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | `init​(RandomMatrixGenerator.PDF pdf, int r, int c, int blen, double sp, double min, double max)` | Initializes internal data structures.
    `void` | `init​(RandomMatrixGenerator.PDF pdf, int r, int c, int blen, double sp, double min, double max, double mean)` | Instantiates a Random number generator with a specific poisson mean
    `boolean` | `isFullyDense()` |
    `String` | `toString()` |

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### RandomMatrixGenerator

          public RandomMatrixGenerator()

    - #### RandomMatrixGenerator

          public RandomMatrixGenerator​(RandomMatrixGenerator.PDF pdf,
                                       int r,
                                       int c,
                                       int blen,
                                       double sp)

      Instantiates a Random number generator
      Parameters:
        `pdf` - probability density function
        `r` - number of rows
        `c` - number of columns
        `blen` - rows/cols per block
        `sp` - sparsity (0 = completely sparse, 1 = completely dense)

    - #### RandomMatrixGenerator

          public RandomMatrixGenerator​(String pdfStr,
                                       int r,
                                       int c,
                                       int blen,
                                       double sp,
                                       double min,
                                       double max)

      Instantiates a Random number generator
      Parameters:
        `pdfStr` - probability density function
        `r` - number of rows
        `c` - number of columns
        `blen` - rows/cols per block
        `sp` - sparsity (0 = completely sparse, 1 = completely dense)
        `min` - minimum of range of random numbers
        `max` - maximum of range of random numbers

    - #### RandomMatrixGenerator

          public RandomMatrixGenerator​(RandomMatrixGenerator.PDF pdf,
                                       int r,
                                       int c,
                                       int blen,
                                       double sp,
                                       double min,
                                       double max)

      Instantiates a Random number generator
      Parameters:
        `pdf` - probability density function
        `r` - number of rows
        `c` - number of columns
        `blen` - rows/cols per block
        `sp` - sparsity (0 = completely sparse, 1 = completely dense)
        `min` - minimum of range of random numbers
        `max` - maximum of range of random numbers

    - #### RandomMatrixGenerator

          public RandomMatrixGenerator​(RandomMatrixGenerator.PDF pdf,
                                       int r,
                                       int c,
                                       int blen,
                                       double sp,
                                       double min,
                                       double max,
                                       double mean)

      Instantiates a Random number generator with a specific poisson mean
      Parameters:
        `pdf` - probability density function
        `r` - number of rows
        `c` - number of columns
        `blen` - rows/cols per block
        `sp` - sparsity (0 = completely sparse, 1 = completely dense)
        `min` - minimum of range of random numbers
        `max` - maximum of range of random numbers
        `mean` - the poisson mean

  - ### Method Detail

    - #### isFullyDense

          public boolean isFullyDense()

    - #### init

          public void init​(RandomMatrixGenerator.PDF pdf,
                           int r,
                           int c,
                           int blen,
                           double sp,
                           double min,
                           double max)

      Initializes internal data structures. Called by Constructor
      Parameters:
        `pdf` - probability density function
        `r` - number of rows
        `c` - number of columns
        `blen` - rows/cols per block
        `sp` - sparsity (0 = completely sparse, 1 = completely dense)
        `min` - minimum of range of random numbers
        `max` - maximum of range of random numbers

    - #### init

          public void init​(RandomMatrixGenerator.PDF pdf,
                           int r,
                           int c,
                           int blen,
                           double sp,
                           double min,
                           double max,
                           double mean)

      Instantiates a Random number generator with a specific poisson mean
      Parameters:
        `pdf` - probability density function
        `r` - number of rows
        `c` - number of columns
        `blen` - rows/cols per block
        `sp` - sparsity (0 = completely sparse, 1 = completely dense)
        `min` - minimum of range of random numbers
        `max` - maximum of range of random numbers
        `mean` - the poisson mean

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`