Package smile.datasets

Record Class PenDigits

java.lang.Object
java.lang.Record
smile.datasets.PenDigits
Record Components:
data - data frame.
formula - modeling formula.
public record PenDigits(DataFrame data, Formula formula) extends Record
Pen-based recognition of handwritten digits dataset. This dataset was collected from 44 writers. The writers are asked write 250 digits in random order.

  • Constructor Details

    • PenDigits

      public PenDigits() throws IOException
      Constructor.
      Throws:
      IOException - when fails to read the file.

    • PenDigits

      public PenDigits(Path path) throws IOException
      Constructor.
      Parameters:
      path - the data path.
      Throws:
      IOException - when fails to read the file.

    • PenDigits

      public PenDigits(DataFrame data, Formula formula)
      Creates an instance of a PenDigits record class.
      Parameters:
      data - the value for the data record component
      formula - the value for the formula record component

  • Method Details

    • x

      public double[][] x()
      Returns the sample features.
      Returns:
      the sample features.

    • y

      public int[] y()
      Returns the class labels.
      Returns:
      the class labels.

    • toString

      public final String toString()
      Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.
      Specified by:
      toString in class Record
      Returns:
      a string representation of this object

    • hashCode

      public final int hashCode()
      Returns a hash code value for this object. The value is derived from the hash code of each of the record components.
      Specified by:
      hashCode in class Record
      Returns:
      a hash code value for this object

    • equals

      public final boolean equals(Object o)
      Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).
      Specified by:
      equals in class Record
      Parameters:
      o - the object with which to compare
      Returns:
      true if this object is the same as the o argument; false otherwise.

    • data

      public DataFrame data()
      Returns the value of the data record component.
      Returns:
      the value of the data record component

    • formula

      public Formula formula()
      Returns the value of the formula record component.
      Returns:
      the value of the formula record component