package?p;
import?java.io.BufferedReader;??
import?java.io.FileNotFoundException;??
import?java.io.FileReader;??
import?java.io.IOException;??
import?java.util.Random;
??
public?class?KAverage?{??
????private?int?sampleCount?=?0;??
????private?int?dimensionCount?=?0;??
????private?int?centerCount?=?0;??
????private?double[][]?sampleValues;??
????private?double[][]?centers;??
????private?double[][]?tmpCenters;??
????private?String?dataFile?=?““;??
??
????/**?
?????*?通過構(gòu)造器傳入數(shù)據(jù)文件?
?????*/??
????public?KAverage（String?dataFile）?throws?NumberInvalieException?{??
????????this.dataFile?=?dataFile;??
????}??
??
????/**?
?????*?第一行為s;d;c含義分別為樣例的數(shù)目，每個(gè)樣例特征的維數(shù)，聚類中心個(gè)數(shù)?文件格式為d[d]...;d[d]...?如：12;23;15?
?????*?每一維之間用隔開，每個(gè)樣例間用;隔開。結(jié)尾沒有‘;‘?可以有多行?
?????*/??
??
????private?int?initData（String?fileName）?{??
????????String?line;??
????????String?samplesValue[];??
????????String?dimensionsValue[]?=?new?String[dimensionCount];??
????????BufferedReader?in;??
????????try?{??
????????????in?=?new?BufferedReader（new?FileReader（fileName））;??
????????}?catch?（FileNotFoundException?e）?{??
????????????e.printStackTrace（）;??
????????????return?-1;??
????????}??
????????/*?
?????????*?預(yù)處理樣本，允許后面幾維為0時(shí)，不寫入文件?
?????????*/??
????????for?（int?i?=?0;?i?????????????for?（int?j?=?0;?j?????????????????sampleValues[i][j]?=?0;??
????????????}??
????????}??
??
????????int?i?=?0;??
????????double?tmpValue?=?0.0;??
????????try?{??
????????????line?=?in.readLine（）;??
????????????String?params[]?=?line.split（“;“）;??
????????????if?（params.length?!=?3）?{//?必須為3個(gè)參數(shù)，否則錯(cuò)誤??
????????????????return?-1;??
????????????}??
????????????/**?
?????????????*?獲取參數(shù)?
?????????????*/??
????????????this.sampleCount?=?Integer.parseInt（params[0]）;??
????????????this.dimensionCount?=?Integer.parseInt（params[1]）;??
????????????this.centerCount?=?Integer.parseInt（params[2]）;??
????????????if?（sampleCount?<=?0?||?dimensionCount?<=?0?||?centerCount?<=?0）?{??
????????????????throw?new?NumberInvalieException（“input?number?<=?0.“）;??
????????????}??
????????????if?（sampleCount?????????????????throw?new?NumberInvalieException（??
????????????????????????“sample?number?????????????}??
??
????????????sampleValues?=?new?double[sampleCount][dimensionCount?+?1];??
????????????centers?=?new?double[centerCount][dimensionCount];??
????????????tmpCenters?=?new?double[centerCount][dimensionCount];??
??
????????????while?（（line?=?in.readLine（））?!=?null）?{??
????????????????samplesValue?=?line.split（“;“）;??
????????????????for?（int?j?=?0;?j?????????????????????dimensionsValue?=?samplesValue[j].split（““）;??
????????????????????for?（int?k?=?0;?k?????????????????????????tmpValue?=?Double.parseDouble（dimensionsValue[k]）;??
????????????????????????sampleValues[i][k]?=?tmpValue;??
????????????????????}?

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2015-04-15?16:31??Kmeans\
?????文件?????????299??2015-04-15?16:33??Kmeans\.classpath
?????文件?????????382??2015-04-15?16:31??Kmeans\.project
?????目錄???????????0??2015-04-15?16:31??Kmeans\.settings\
?????文件?????????598??2015-04-15?16:33??Kmeans\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2015-04-15?16:33??Kmeans\bin\
?????目錄???????????0??2015-04-15?20:51??Kmeans\bin\p\
?????文件????????5699??2015-04-16?10:06??Kmeans\bin\p\KAverage.class
?????文件?????????765??2015-04-15?16:33??Kmeans\bin\p\NumberInvalieException.class
?????文件??????????47??2015-04-15?20:20??Kmeans\bin\p\sample.txt
?????目錄???????????0??2015-04-15?16:31??Kmeans\src\
?????目錄???????????0??2015-04-15?17:01??Kmeans\src\p\
?????文件????????9890??2015-04-16?10:06??Kmeans\src\p\KAverage.java
?????文件?????????517??2015-04-15?16:32??Kmeans\src\p\NumberInvalieException.java
?????文件?????????492??2015-04-16?09:40??Kmeans\src\p\sample.txt