\n
\n<project xmlns_xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"\n xsi_schemaLocation=\"http:\/\/maven.apache.org\/POM\/4.0.0 http:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd\">\n <modelVersion>4.0.0<\/modelVersion>\n\n <groupId>Add your Group Id<\/groupId>\n <artifactId>Add your Artifact Id<\/artifactId>\n <version>1.0-SNAPSHOT<\/version>\n <packaging>jar<\/packaging>\n\n <name>Add the name of your Project<\/name>\n <url>http:\/\/maven.apache.org<\/url>\n\n <properties>\n <project.build.sourceEncoding>UTF-8<\/project.build.sourceEncoding>\n <\/properties>\n\n <dependencies>\n <dependency>\n <groupId>org.apache.mahout<\/groupId>\n <artifactId>mahout-mr<\/artifactId>\n <version>0.10.0<\/version>\n <\/dependency>\n\n <dependency>\n <groupId>junit<\/groupId>\n <artifactId>junit<\/artifactId>\n <version>3.8.1<\/version>\n <scope>test<\/scope>\n <\/dependency>\n <\/dependencies>\n<\/project><\/code><\/pre>\n<\/div>\n\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8a2d\u5b9a\u306b\u3057\u305f\u304c\u3063\u3066\u3001\u4e0a\u8a18\u30d5\u30a1\u30a4\u30eb\u306b\u6b63\u3057\u3044\u5185\u5bb9\u3092\u5165\u529b\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
\u30c7\u30fc\u30bf\u3092GridDB\u306b\u66f8\u304d\u8fbc\u3080<\/h2>\n
\u6b21\u306b\u3001CSV\u30d5\u30a1\u30a4\u30eb\u304b\u3089GridDB\u306b\u30c7\u30fc\u30bf\u3092\u66f8\u304d\u8fbc\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305a\u3001\u4f7f\u7528\u3059\u308b\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\n
import java.io.IOException;\nimport java.util.Collection;\nimport java.util.Properties;\nimport java.util.Scanner;\n\nimport com.toshiba.mwcloud.gs.Collection;\nimport com.toshiba.mwcloud.gs.GSException;\nimport com.toshiba.mwcloud.gs.GridStore;\nimport com.toshiba.mwcloud.gs.GridStoreFactory;\nimport com.toshiba.mwcloud.gs.Query;\nimport com.toshiba.mwcloud.gs.RowKey;\nimport com.toshiba.mwcloud.gs.RowSet;<\/code><\/pre>\n<\/div>\n\u30c7\u30fc\u30bf\u306f data.csv<\/code> \u3068\u3044\u3046\u540d\u524d\u306e CSV \u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30c7\u30fc\u30bf\u3092GridDB\u30b3\u30f3\u30c6\u30ca\u306b\u683c\u7d0d\u3059\u308b\u3053\u3068\u304c\u76ee\u7684\u3067\u3059\u3002\u307e\u305a\u3001\u30b3\u30f3\u30c6\u30ca\u30b9\u30ad\u30fc\u30de\u3092\u9759\u7684\u30af\u30e9\u30b9\u3068\u3057\u3066\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n\n
public static class Ratings{\n @RowKey String userid;\n String item;\n String rating;\n }<\/code><\/pre>\n<\/div>\n\u4e0a\u8a18\u306e\u30af\u30e9\u30b9\u306fGridDB\u30b3\u30f3\u30c6\u30ca\u3092\u8868\u3057\u3066\u304a\u308a\u3001\u3053\u308c\u306f3\u3064\u306e\u30ab\u30e9\u30e0\u3092\u6301\u3064SQL\u30c6\u30fc\u30d6\u30eb\u306b\u76f8\u5f53\u3057\u307e\u3059\u3002<\/p>\n
\u3067\u306f\u3001GridDB\u3078\u306e\u63a5\u7d9a\u3092\u78ba\u7acb\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u63a5\u7d9a\u5148\u306e\u30af\u30e9\u30b9\u30bf\u540d\u3001\u63a5\u7d9a\u3059\u308b\u30e6\u30fc\u30b6\u540d\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u306a\u3069\u3001GridDB\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u969b\u306e\u60c5\u5831\u3092\u5165\u529b\u3057\u3066Properties\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n
\n
\nProperties props = new Properties();\nprops.setProperty(\"notificationAddress\", \"239.0.0.1\");\nprops.setProperty(\"notificationPort\", \"31999\");\nprops.setProperty(\"clusterName\", \"defaultCluster\");\nprops.setProperty(\"user\", \"admin\");\nprops.setProperty(\"password\", \"admin\");\nGridStore store = GridStoreFactory.getInstance().getGridStore(props);<\/code><\/pre>\n<\/div>\n\u4e0a\u8a18\u306e\u5185\u5bb9\u306f\u3001GridDB\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u969b\u306e\u8a8d\u8a3c\u60c5\u5831\u306b\u5408\u308f\u305b\u3066\u5909\u66f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
\u30c7\u30fc\u30bf\u3092 Ratings<\/code> \u30b3\u30f3\u30c6\u30ca\u306b\u66f8\u304d\u8fbc\u307f\u305f\u3044\u306e\u3067\u3001\u305d\u308c\u3092\u9078\u629e\u3057\u307e\u3059\u3002<\/p>\n\n
Collection<String, Ratings> coll = store.putCollection(\"col01\", Ratings.class);<\/code><\/pre>\n<\/div>\ncoll\u306f<\/code>Ratings` \u30b3\u30f3\u30c6\u30ca\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3042\u308b\u305f\u3081\u3001\u3053\u306e\u30b3\u30f3\u30c6\u30ca\u3092\u53c2\u7167\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\u305d\u308c\u3067\u306f\u3001data.csv<\/code> \u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u3093\u3067\u3001GridDB \u30b3\u30f3\u30c6\u30ca\u306b\u66f8\u304d\u8fbc\u3093\u3067\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n
File file1 = new File(\"data.csv\");\n Scanner sc = new Scanner(file1);\n String data = sc.next();\n \n while (sc.hasNext()){\n String scData = sc.next();\n String dataList[] = scData.split(\",\");\n String userid = dataList[0];\n String item = dataList[1];\n String rating = dataList[2];\n\n Ratings ratings = new Ratings();\n \n ratings.userid = userid;\n ratings.item = item;\n ratings.rating = rating;\n coll.append(ratings);\n }<\/code><\/pre>\n<\/div>\n\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u306f data.csv<\/code> \u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u8fbc\u307f\u3001ratings<\/code> \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u3053\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u3001GridDB \u30b3\u30f3\u30c6\u30ca\u306b\u8ffd\u52a0\u3055\u308c\u307e\u3059\u3002\u30c7\u30fc\u30bf\u306e\u30ab\u30e9\u30e0\u306f\u30ab\u30f3\u30de\u3067\u533a\u5207\u3089\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u30c7\u30ea\u30df\u30bf\u30fc\u3068\u3057\u3066\u30ab\u30f3\u30de(,)\u3092\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\nGridDB \u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b<\/h2>\n
\u305d\u308c\u3067\u306f\u3001GridDB\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3057\u3001\u305d\u308c\u3092\u4f7f\u3063\u3066\u30ec\u30b3\u30e1\u30f3\u30c0\u30fc\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3067\u3001GridDB\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3057\u307e\u3059\u3002<\/p>\n
\n
Query<ratings> query = coll.query(\"select *\");\nRowSet<ratings> rs = query.fetch(false);\nRowSet res = query.fetch();<\/code><\/pre>\n<\/div>\nselect *<\/code>\u30af\u30a8\u30ea\u306f\u3001GridDB\u30b3\u30f3\u30c6\u30ca\u304b\u3089\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf\u3092\u5f15\u304d\u51fa\u3059\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\u30ec\u30b3\u30e1\u30f3\u30c0\u30fc\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3059\u308b<\/h2>\n
\u3044\u3088\u3044\u3088Apache Mahout\u3092\u4f7f\u3063\u3066\u3001\u30c7\u30fc\u30bf\u304b\u3089\u30ec\u30b3\u30e1\u30f3\u30c0\u30fc\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3057\u307e\u3059\u3002\u307e\u305a\u3001\u5fc5\u8981\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u3092Apache Mahout\u304b\u3089\u30a4\u30f3\u30dd\u30fc\u30c8\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\n
import java.io.File;\nimport java.util.List;\n\nimport org.apache.mahout.cf.taste.impl.neighborhood.ThresholdUserNeighborhood;\nimport org.apache.mahout.cf.taste.impl.model.file.FileDataModel;\nimport org.apache.mahout.cf.taste.impl.recommender.GenericUserBasedRecommender;\nimport org.apache.mahout.cf.taste.model.DataModel;\nimport org.apache.mahout.cf.taste.impl.similarity.CityBlockSimilarity;\nimport org.apache.mahout.cf.taste.neighborhood.UserNeighborhood;\nimport org.apache.mahout.cf.taste.recommender.UserBasedRecommender;\nimport org.apache.mahout.cf.taste.recommender.RecommendedItem;<\/code><\/pre>\n<\/div>\n\u76ee\u6a19\u306f\u3001n<\/code>\u500b\u306e\u30a2\u30a4\u30c6\u30e0\u3092\u30e6\u30fc\u30b6\u306b\u63a8\u85a6\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u30a2\u30a4\u30c6\u30e0\u306e\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u306b\u306f\u3001\u985e\u4f3c\u5ea6\u6307\u6a19\u3092\u7528\u3044\u307e\u3059\u3002\u985e\u4f3c\u5ea6\u6307\u6a19\u306f\u3001\u7570\u306a\u308b\u30a2\u30a4\u30c6\u30e0\u9593\u306e\u30de\u30f3\u30cf\u30c3\u30bf\u30f3\u8ddd\u96e2\u3092\u4f7f\u3063\u3066\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u3053\u306e\u30b3\u30fc\u30c9\u306f try<\/code> \u3068 catch<\/code> \u30d6\u30ed\u30c3\u30af\u3067\u56f2\u307e\u308c\u3066\u304a\u308a\u3001\u767a\u751f\u3057\u3046\u308b\u4f8b\u5916\u3092\u30ad\u30e3\u30c3\u30c1\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u30ec\u30b3\u30e1\u30f3\u30c0\u30fc\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n\n
\ntry {\n CityBlockSimilarity similarity = new CityBlockSimilarity(res);\n UserNeighborhood neighborhood = new ThresholdUserNeighborhood(0.1,similarity, res);\n UserBasedRecommender recommender = new GenericUserBasedRecommender(res, neighborhood, similarity);\n \n \/\/ UserID and number of items to be recommended\n List<recommendeditem> recommended_items = recommender.recommend(2, 2); \n \n for (RecommendedItem r : recommended_items) {\n System.out.println(r);\n }\n} catch (Exception ex) {\n System.out.println(\"An exception occured!\");\n}<\/code><\/pre>\n<\/div>\n\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3067\u6700\u3082\u91cd\u8981\u306a\u306e\u306f\u3001\u985e\u4f3c\u5ea6\u306e\u95be\u5024\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u540c\u3058\u30af\u30e9\u30b9\u30bf\u306b\u5c5e\u3059\u308b2\u3064\u306e\u30c7\u30fc\u30bf\u9805\u76ee\u9593\u306e\u985e\u4f3c\u5ea6\u306e\u4e0b\u9650\u5024\u3067\u3059\u3002\u4f8b\u3048\u3070\u985e\u4f3c\u5ea6\u95be\u5024\u30920.5\u3068\u3057\u305f\u5834\u5408\u3001\u30d5\u30a3\u30fc\u30eb\u30c9\u5024\u304c50%\u4f3c\u3066\u3044\u308b\u30a2\u30a4\u30c6\u30e0\u306f\u3001\u540c\u3058\u30af\u30e9\u30b9\u30bf\u306b\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002\u985e\u4f3c\u5ea6\u306e\u3057\u304d\u3044\u5024\u3092 1.0 \u306b\u3059\u308b\u3068\u3001\u30a2\u30a4\u30c6\u30e0\u304c\u4e00\u7dd2\u306b\u30af\u30e9\u30b9\u30bf\u5316\u3055\u308c\u308b\u305f\u3081\u306b\u306f\u3001\u305d\u308c\u3089\u306e\u30a2\u30a4\u30c6\u30e0\u304c\u985e\u4f3c\u3057\u305f\u7279\u6027\u3092\u6709\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n
\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3067\u306f\u3001ID\u304c2\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3057\u30662\u3064\u306e\u30ec\u30b3\u30e1\u30f3\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u7b97\u51fa\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u30b3\u30fc\u30c9\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u3068\u5b9f\u884c<\/h2>\n
\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306b\u3001gsadm<\/code> \u30e6\u30fc\u30b6\u3067\u30ed\u30b0\u30a4\u30f3\u3057\u307e\u3059\u3002\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30d5\u30a1\u30a4\u30eb\u3092\u3001GridDB\u306e bin<\/code> \u30d5\u30a9\u30eb\u30c0\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002<\/p>\n\/griddb_4.6.0-1_amd64\/usr\/griddb-4.6.0\/bin\n<\/code><\/pre>\nLinux\u7aef\u672b\u3067\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3001gridstore.jar\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
export CLASSPATH=$CLASSPATH:\/home\/osboxes\/Downloads\/griddb_4.6.0-1_amd64\/usr\/griddb-4.6.0\/bin\/gridstore.jar\n<\/code><\/pre>\n\u6b21\u306b\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u3001.java<\/code>\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u307e\u3059\u3002<\/p>\njavac RecommenderSystemClass.java\n<\/code><\/pre>\n\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u751f\u6210\u3055\u308c\u305f .class \u30d5\u30a1\u30a4\u30eb\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n
java RecommenderSystemClass\n<\/code><\/pre>\n\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30012\u3064\u306e\u9805\u76ee\u3092\u964d\u9806\u306b\u63a8\u85a6\u3057\u307e\u3059\u3002<\/p>\n
Recommended Item[item:12, value:4.857143]\nRecommended Item[item:14, value:3.357143]\n<\/code><\/pre>\n\u304a\u3081\u3067\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002<\/p>\n
\u4ee5\u4e0a\u3001Java\u3068GridDB\u3092\u4f7f\u3063\u305f\u30ec\u30b3\u30e1\u30f3\u30c0\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9\u65b9\u6cd5\u3067\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u306f\u3058\u3081\u306b \u30ec\u30b3\u30e1\u30f3\u30c0\u30fc\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u8981\u7d20\u306b\u57fa\u3065\u3044\u3066\u30e6\u30fc\u30b6\u30fc\u306b\u30a2\u30a4\u30c6\u30e0\u3092\u63a8\u85a6\u3059\u308b\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u305f\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u3002\u3053\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u6700\u3082\u8208\u5473\u3092\u6301\u3061\u305d\u3046\u306a\u3082\u306e\u3092\u63a8\u85a6\u3057\u307e\u3059\u3002Netflix\u306f\u3001\u30ec\u30b3\u30e1\u30f3\u30c0\u30fc\u30b7\u30b9\u30c6\u30e0\u3092 […]<\/p>\n","protected":false},"author":41,"featured_media":49312,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1005],"tags":[],"class_list":["post-50767","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-1005"],"acf":[],"yoast_head":"\n
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