import?java.io.DataInput;
import?java.io.DataOutput;
import?java.io.IOException;
import?org.apache.hadoop.io.Writable;

/*
?*?k-means聚類算法簇信息
?*/
public?class?Cluster?implements?Writable{
	private?int?clusterID;
	private?long?numOfPoints;
	private?Instance?center;
	
	public?Cluster（）{
		this.setClusterID（-1）;
		this.setNumOfPoints（0）;
		this.setCenter（new?Instance（））;
	}
	
	public?Cluster（int?clusterIDInstance?center）{
		this.setClusterID（clusterID）;
		this.setNumOfPoints（0）;
		this.setCenter（center）;
	}
	
	public?Cluster（String?line）{
		String[]?value?=?line.split（““3）;
		clusterID?=?Integer.parseInt（value[0]）;
		numOfPoints?=?Long.parseLong（value[1]）;
		center?=?new?Instance（value[2]）;
	}
	
	public?String?toString（）{
		String??result?=?String.valueOf（clusterID）?+?““?
				+?String.valueOf（numOfPoints）?+?““?+?center.toString（）;
		return?result;
	}

	public?int?getClusterID（）?{
		return?clusterID;
	}

	public?void?setClusterID（int?clusterID）?{
		this.clusterID?=?clusterID;
	}

	public?long?getNumOfPoints（）?{
		return?numOfPoints;
	}

	public?void?setNumOfPoints（long?numOfPoints）?{
		this.numOfPoints?=?numOfPoints;
	}

	public?Instance?getCenter（）?{
		return?center;
	}

	public?void?setCenter（Instance?center）?{
		this.center?=?center;
	}
	
	public?void?observeInstance（Instance?instance）{
		try?{
			Instance?sum?=?center.multiply（numOfPoints）.add（instance）;
			numOfPoints++;
			center?=?sum.divide（numOfPoints）;
		}?catch?（Exception?e）?{
			//?TODO?Auto-generated?catch?block
			e.printStackTrace（）;
		}
	}

	@Override
	public?void?write（DataOutput?out）?throws?IOException?{
		//?TODO?Auto-generated?method?stub
		out.writeInt（clusterID）;
		out.writeLong（numOfPoints）;
		center.write（out）;
	}

	@Override
	public?void?readFields（DataInput?in）?throws?IOException?{
		//?TODO?Auto-generated?method?stub
		clusterID?=?in.readInt（）;
		numOfPoints?=?in.readLong（）;
		center.readFields（in）;
	}
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2014-09-18?19:15??Chapter?10\
?????目錄???????????0??2014-09-18?19:11??Chapter?10\CH?10.1?-?KMeans\
?????文件?????????388??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\Instance.txt
?????文件?????????380??2014-08-31?11:00??Chapter?10\CH?10.1?-?KMeans\README.md
?????目錄???????????0??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\
?????文件????????2010??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\Cluster.java
?????文件????????2663??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\Instance.java
?????目錄???????????0??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\king\
?????目錄???????????0??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\king\Utils\
?????文件?????????144??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\king\Utils\Distance.java
?????文件?????????526??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\king\Utils\EuclideanDistance.java
?????文件?????????467??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\king\Utils\HammingDistance.java
?????文件?????????878??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\king\Utils\InstanceGenerator.java
?????文件????????1365??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\king\Utils\ListWritable.java
?????文件????????4640??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\KMeans.java
?????文件????????2862??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\KMeansCluster.java
?????文件????????3632??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\KMeansDriver.java
?????文件????????3779??2014-07-31?20:49??Chapter?10\CH?10.1?-?KMeans\src\RandomClusterGenerator.java
?????目錄???????????0??2014-09-18?19:11??Chapter?10\CH?10.2?-?KNearestNeighbour\
?????文件?????????716??2014-08-31?11:15??Chapter?10\CH?10.2?-?KNearestNeighbour\README.md
?????目錄???????????0??2014-07-31?20:50??Chapter?10\CH?10.2?-?KNearestNeighbour\src\
?????文件?????????636??2014-07-31?20:50??Chapter?10\CH?10.2?-?KNearestNeighbour\src\Instance.java
?????目錄???????????0??2014-07-31?20:50??Chapter?10\CH?10.2?-?KNearestNeighbour\src\king\
?????目錄???????????0??2014-07-31?20:50??Chapter?10\CH?10.2?-?KNearestNeighbour\src\king\Utils\
?????文件?????????353??2014-07-31?20:50??Chapter?10\CH?10.2?-?KNearestNeighbour\src\king\Utils\Distance.java
?????文件????????1884??2014-07-31?20:50??Chapter?10\CH?10.2?-?KNearestNeighbour\src\king\Utils\ListWritable.java
?????文件????????7048??2014-07-31?20:50??Chapter?10\CH?10.2?-?KNearestNeighbour\src\KNearestNeighbour.java
?????文件?????????119??2014-07-31?20:50??Chapter?10\CH?10.2?-?KNearestNeighbour\src\train.txt
?????目錄???????????0??2014-09-18?19:13??Chapter?10\CH?10.3?-?NaiveBayes\
?????文件????????8375??2014-08-02?18:12??Chapter?10\CH?10.3?-?NaiveBayes\ReadMe-NaiveBayes.html
?????文件???????54827??2014-08-02?18:18??Chapter?10\CH?10.3?-?NaiveBayes\ReadMe-NaiveBayes.pdf
............此處省略98個文件信息