package?recommender;
import?java.io.File;
import?java.util.HashMap;
import?java.util.List;
import?java.util.Map;

import?org.apache.mahout.cf.taste.impl.common.LongPrimitiveIterator;
import?org.apache.mahout.cf.taste.impl.model.GenericBooleanPrefDataModel;
import?org.apache.mahout.cf.taste.impl.model.file.FileDataModel;
import?org.apache.mahout.cf.taste.impl.recommender.GenericItembasedRecommender;
import?org.apache.mahout.cf.taste.impl.similarity.PearsonCorrelationSimilarity;
import?org.apache.mahout.cf.taste.model.DataModel;
import?org.apache.mahout.cf.taste.recommender.RecommendedItem;
import?org.apache.mahout.cf.taste.recommender.Recommender;
import?org.apache.mahout.cf.taste.similarity.ItemSimilarity;


/*
?*?
?*?基于物品相似度的推薦引擎

?*?
?*?
?*/
public?class?MyItembasedRecommender?{
	?
		??
	
	public?Map?getItemCF（int?userid?int?number）?throws?Exception{
		DataModel?model?=?new?FileDataModel（new?File（“E:\\test2.txt“））;//構(gòu)造數(shù)據(jù)模型，F(xiàn)ile-based
		Map?map?=?new?HashMap（）;
		ItemSimilarity?similarity?=?new?PearsonCorrelationSimilarity（model）;//計算內(nèi)容相似度
		Recommender?recommender?=?new?GenericItembasedRecommender（model?similarity）;//構(gòu)造推薦引擎
		?
		
		?LongPrimitiveIterator?iter?=?model.getUserIDs（）;

		?while?（iter.hasNext（））?{
				long?uid?=?iter.nextLong（）;
				if?（uid?==?userid）?{
					List?list?=?recommender.recommend（uid?number）;

					for?（RecommendedItem?ritem?:?list）?{
						System.out.printf（“（%s%f）“?ritem.getItemID（）
								ritem.getValue（））;

						map.put（ritem.getItemID（）+““?ritem.getValue（）+““）;

					}
				}

			}
			return?map;
		
		
	}
	
	
	
	
	
	
	
	
	
	
	
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2013-11-18?20:15??OnlineQueryCF\
?????文件?????????847??2013-11-18?20:14??OnlineQueryCF\.classpath
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\.myeclipse\
?????文件?????????312??2013-11-18?20:14??OnlineQueryCF\.mymetadata
?????文件????????1286??2013-11-18?20:14??OnlineQueryCF\.project
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\.settings\
?????文件?????????198??2013-11-18?20:14??OnlineQueryCF\.settings\org.eclipse.core.resources.prefs
?????文件?????????330??2013-11-18?20:14??OnlineQueryCF\.settings\org.eclipse.jdt.core.prefs
?????文件???????79712??2013-11-18?20:07??OnlineQueryCF\QQ截圖20131118200724.png
?????文件???????28792??2013-11-18?20:07??OnlineQueryCF\QQ截圖20131118200732.png
?????文件???????48776??2013-11-18?20:09??OnlineQueryCF\QQ截圖20131118200919.png
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\src\
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\src\recommender\
?????文件????????1710??2013-11-18?20:14??OnlineQueryCF\src\recommender\MyItembasedRecommender.java
?????文件????????3154??2013-11-18?20:14??OnlineQueryCF\src\recommender\MySlopeOneRecommender.java
?????文件????????3808??2013-11-18?20:14??OnlineQueryCF\src\recommender\UserbaseCFMain.java
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\src\servlet\
?????文件????????2974??2013-11-18?20:14??OnlineQueryCF\src\servlet\recommenderServlet.java
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\WebRoot\
?????文件????????1571??2013-11-18?20:14??OnlineQueryCF\WebRoot\index.jsp
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\WebRoot\meta-INF\
?????文件??????????36??2013-11-18?20:14??OnlineQueryCF\WebRoot\meta-INF\MANIFEST.MF
?????文件????????1238??2013-11-18?20:14??OnlineQueryCF\WebRoot\recommender.jsp
?????文件???????10307??2013-11-18?20:14??OnlineQueryCF\WebRoot\test2.txt
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\WebRoot\WEB-INF\
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\WebRoot\WEB-INF\classes\
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\WebRoot\WEB-INF\classes\recommender\
?????文件????????3054??2013-11-18?20:14??OnlineQueryCF\WebRoot\WEB-INF\classes\recommender\MyItembasedRecommender.class
?????文件????????2912??2013-11-18?20:14??OnlineQueryCF\WebRoot\WEB-INF\classes\recommender\MySlopeOneRecommender.class
?????文件????????3528??2013-11-18?20:14??OnlineQueryCF\WebRoot\WEB-INF\classes\recommender\UserbaseCFMain.class
?????目錄???????????0??2013-11-18?20:14??OnlineQueryCF\WebRoot\WEB-INF\classes\servlet\
............此處省略9個文件信息