attributetype.java

一个数据挖掘软件ALPHAMINERR的整个过程的JAVA版源代码

/*
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

 /**
  * Title: XELOPES Data Mining Library
  * Description: The XELOPES library is an open platform-independent and data-source-independent library for Embedded Data Mining.
  * Copyright: Copyright (c) 2002 Prudential Systems Software GmbH
  * Company: ZSoft (www.zsoft.ru), Prudsys (www.prudsys.com)
  * @author Valentine Stepanenko ([e-mail])
  * @version 1.0
  */

package com.prudsys.pdm.Core;

 /**
  * Defines the possible Attribute types. <p>
  *
  * From CWM Data Mining. <p>
  *
  * Attributes:
  * <ul>
  *   <li> <i>type</i>: Attribute type. Possible is: Categorical, Numerical. <br>
  *       - type: Integer <br>
  *       - multiplicity: exactly one
  * </ul>
  */
public class AttributeType
{
    // -----------------------------------------------------------------------
    //  Constants of attribute type
    // -----------------------------------------------------------------------
    /** Categorical attribute. */
    public static final int CATEGORICAL = 0;

    /** Numeric attribute. */
    public static final int NUMERICAL = 1;

    // -----------------------------------------------------------------------
    //  Variables declarations
    // -----------------------------------------------------------------------
    /** Type of attribute. */
    private int type = CATEGORICAL;

    // -----------------------------------------------------------------------
    //  Constructor
    // -----------------------------------------------------------------------
    /**
     * Empty constructor.
     */
    public AttributeType()
    {
    }

    /**
     * Creates attribute type of given type.
     *
     * @param type attribute type
     */
    public AttributeType( int type )
    {
        this.type = type;
    }

    // -----------------------------------------------------------------------
    //  Getter and setter methods
    // -----------------------------------------------------------------------
    /**
     * Get attribute type.
     *
     * @return attribute type
     */
    public int getType() {
        return type;
    }

    /**
     * Set attribute type.
     *
     * @param type attribute type
     */
    public void setType(int type) {
        this.type = type;
    }

    // -----------------------------------------------------------------------
    //  java.lang.Object methods
    // -----------------------------------------------------------------------
    /**
     * Returns attribute type as string.
     *
     * @return string representation of attribute type
     */
    public String toString()
    {
        if( type == 0 ) return "categorical";
        else
        if( type == 1) return "numerical";
        else
        return "unknown type";
    }
}