Package smile.datasets

Record Class Abalone

java.lang.Object
java.lang.Record
smile.datasets.Abalone
Record Components:
train - training data frame.
test - testing data frame.
formula - modeling formula.
public record Abalone(DataFrame train, DataFrame test, Formula formula) extends Record
Predicting the age of abalone from physical measurements. The age of abalone is determined by cutting the shell through the cone, staining it, and counting the number of rings through a microscope.

Other measurements, which are easier to obtain, are used to predict the age. Further information, such as weather patterns and location (hence food availability) may be required to solve the problem.

From the original data examples with missing values were removed (the majority having the predicted value missing), and the ranges of the continuous values have been scaled for use with an ANN (by dividing by 200).

  • Constructor Summary

    Constructors
    Constructor
    Description
    Abalone()
    Constructor.
    Abalone(Path trainDataPath, Path testDataPath)
    Constructor.
    Abalone(DataFrame train, DataFrame test, Formula formula)
    Creates an instance of a Abalone record class.

  • Method Summary

    Modifier and Type
    Method
    Description
    final boolean
    equals(Object o)
    Indicates whether some other object is "equal to" this one.
    Formula
    formula()
    Returns the value of the formula record component.
    final int
    hashCode()
    Returns a hash code value for this object.
    DataFrame
    test()
    Returns the value of the test record component.
    double[][]
    testx()
    Returns the test sample features.
    double[]
    testy()
    Returns the test sample target values.
    final String
    toString()
    Returns a string representation of this record class.
    DataFrame
    train()
    Returns the value of the train record component.
    double[][]
    x()
    Returns the train sample features.
    double[]
    y()
    Returns the train sample target values.

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Constructor Details

    • Abalone

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

    • Abalone

      public Abalone(Path trainDataPath, Path testDataPath) throws IOException
      Constructor.
      Parameters:
      trainDataPath - the path to training data file.
      testDataPath - the path to testing data file.
      Throws:
      IOException - when fails to read the file.

    • Abalone

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

  • Method Details

    • x

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

    • y

      public double[] y()
      Returns the train sample target values.
      Returns:
      the train sample target values.

    • testx

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

    • testy

      public double[] testy()
      Returns the test sample target values.
      Returns:
      the test sample target values.

    • 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.

    • train

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

    • test

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

    • formula

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