miningmetadata.java

数据挖掘。数据仓库

package org.scut.DataMining.Core;
import org.scut.DataMining.Core.MiningAttribute;

import java.util.ArrayList;
import java.util.Date;

public class MiningMetaData
{
	/** Name of the mining meta data */
	private String name;
	/** Attributes on mining */
	private ArrayList<MiningAttribute> attributes = new ArrayList<MiningAttribute>();
	/** Target attribute indice */
	private ArrayList<Integer> target = new ArrayList<Integer>();
	/** None target attribute indice */
	private ArrayList<Integer> input = new ArrayList<Integer>();
	/**
	 * Constucts a MiningMetaData object with no name
	 */
	public MiningMetaData()
	{
		this.name = "";
	}
	/**
	 * Constucts a MiningMetaData object by name
	 * @param name name of the MiningMetaData
	 */
	public MiningMetaData(String name)
	{
		this.name = name;
	}
	/**
	 * Gets the name of the meta data
	 * @return name of the meta data object
	 */
	public String getName()
	{
		return this.name;
	}
	/**
	 * Sets the name of the meta data object
	 * @param name name to be set to the meta data object
	 */
	public void setName(String name)
	{
		this.name = name;
	}
	/**
	 * Gets the count of the attributes in the metadata
	 * @return count value
	 */
	public int getAttributeCount()
	{
		return this.attributes.size();
	}
	/**
	 * Gets the count of the targets
	 * @return
	 */
	public int getTargetCount()
	{
		return this.target.size();
	}
	/**
	 * Gets the countof the non-targets
	 * @return
	 */
	public int getInputCount()
	{
		return this.input.size();
	}
	/**
	 * Gets the attribute at a specified position
	 * @param idx position
	 * @return MiningAttribute at the specified position
	 */
	public MiningAttribute getAttribute(int idx)
	{
		return this.attributes.get(idx); 
	}
	/**
	 * Gets the index of the target at a speicified position
	 * @param idx
	 * @return
	 */
	public int getTargetIndex(int idx)
	{
		return this.target.get(idx);
	}
	/**
	 * Gets the index of the input at a specified position
	 * @param idx
	 * @return
	 */
	public int getInputIndex(int idx)
	{
		return this.input.get(idx);
	}
	/**
	 * Sets an attribute at a specified position
	 * @param idx position to be set at
	 * @param attr attibute to be set
	 */
	public void setAttribute(int idx,MiningAttribute attr)
	{
		this.attributes.set(idx,attr);
	}
	/**
	 * Adds an Attribute to the MetaData
	 * @param attr MiningAttribute object
	 */
	public void addAttribute(MiningAttribute attr)
	{
		this.attributes.add(attr);
	}
	/**
	 * Adds an attribute to the meta data at specified position
	 * @param idx
	 * @param attr
	 */
	public void addAttribute(int idx,MiningAttribute attr)
	{
		this.attributes.add(idx,attr);
	}
	/**
	 * Adds a target indext to the target indice array list
	 * @param idx index of the target to be added
	 */
	public void addTarget(int idx)
	{
		if( idx<0 || idx>=this.attributes.size()) return;
		boolean valid = true;
		for(int theIdx : this.input)
		{
			if(theIdx == idx)
			{
				valid = false;
				break;
			}
		}
		for(int theIdx : this.target)
		{
			if(theIdx == idx)
			{
				valid = false;
				break;
			}
		}
		if(valid)
			this.target.add(idx);
	}
	/**
	 * Adds the input index
	 * @param idx
	 */
	public void addInput(int idx)
	{
		if( idx<0 || idx>=this.attributes.size()) return;
		boolean valid = true;
		for(int theIdx : this.input)
		{
			if(theIdx == idx)
			{
				valid = false;
				break;
			}
		}
		for(int theIdx : this.target)
		{
			if(theIdx == idx)
			{
				valid = false;
				break;
			}
		}
		if(valid)
			this.input.add(idx);
	}
	/**
	 * Adds a target index by name within the attribute list
	 * @param name name of the attribute to be added
	 */
	public void addTarget(String name)
	{
		for(int i=0;i<this.attributes.size();i++)
		{
			if(this.attributes.get(i).getName().equals(name)) 
			{
				this.addTarget(i);
				break; //: name unique, just break
			}
		}
	}
	/**
	 * Adds input by name
	 * @param name
	 */
	public void addInput(String name)
	{
		for(int i=0;i<this.attributes.size();i++)
		{
			if(this.attributes.get(i).getName().equals(name))
			{
				this.addInput(i);
				break; //: name unique, just break
			}
		}
	}
	/*********************************************************************/
	public static void main(String[] args)
	{
		long start = new Date().getTime();
		MiningMetaData md = new MiningMetaData("Hong");
		NumericAttribute ma1 = new NumericAttribute("NA1");
		NumericAttribute ma2 = new NumericAttribute("NA2");
		NumericAttribute ma3 = new NumericAttribute("NA3");
		md.addAttribute(ma1);
		md.addAttribute(ma2);
		md.addAttribute(ma3);
		md.addTarget("NA2");
		md.addTarget("NA1");
		//md.addTarget(1);
		//md.addTarget(0);
		System.out.println(md.getName());
		long end = new Date().getTime();
		System.out.println("Time eclipsed[s]: " + (end-start)/1000.0);
	}
	/*********************************************************************/
}