Record Class ItemSet

java.lang.Object
java.lang.Record
smile.association.ItemSet
Record Components:
items - The set of items.
support - The associated support value.
public record ItemSet(int[] items, int support) extends Record
A set of items. The support supp(X) of an item set X is defined as the proportion of transactions in the data set which contain the item set. In this class, the support is actually the raw frequency rather than the ratio.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ItemSet(int[] items, int support)
    Creates an instance of a ItemSet record class.

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    equals(Object o)
    Indicates whether some other object is "equal to" this one.
    int
    hashCode()
    Returns a hash code value for this object.
    int[]
    items()
    Returns the value of the items record component.
    int
    support()
    Returns the value of the support record component.
    String
    toString()
    Returns a string representation of this record class.

    Methods inherited from class Object

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

  • Constructor Details

    • ItemSet

      public ItemSet(int[] items, int support)
      Creates an instance of a ItemSet record class.
      Parameters:
      items - the value for the items record component
      support - the value for the support record component

  • Method Details

    • equals

      public 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. Reference components are compared with Objects::equals(Object,Object); primitive components are compared with the compare method from their corresponding wrapper classes.
      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.

    • hashCode

      public 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

    • toString

      public 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

    • items

      public int[] items()
      Returns the value of the items record component.
      Returns:
      the value of the items record component

    • support

      public int support()
      Returns the value of the support record component.
      Returns:
      the value of the support record component