{"action":"opened","issue":{"url":"https://api.github.com/repos/dmlc/xgboost/issues/654","labels_url":"https://api.github.com/repos/dmlc/xgboost/issues/654/labels{/name}","comments_url":"https://api.github.com/repos/dmlc/xgboost/issues/654/comments","events_url":"https://api.github.com/repos/dmlc/xgboost/issues/654/events","html_url":"https://github.com/dmlc/xgboost/issues/654","id":119110404,"number":654,"title":"order of features matters","user":{"login":"cyrix333","id":12109511,"avatar_url":"https://avatars.githubusercontent.com/u/12109511?v=3","gravatar_id":"","url":"https://api.github.com/users/cyrix333","html_url":"https://github.com/cyrix333","followers_url":"https://api.github.com/users/cyrix333/followers","following_url":"https://api.github.com/users/cyrix333/following{/other_user}","gists_url":"https://api.github.com/users/cyrix333/gists{/gist_id}","starred_url":"https://api.github.com/users/cyrix333/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cyrix333/subscriptions","organizations_url":"https://api.github.com/users/cyrix333/orgs","repos_url":"https://api.github.com/users/cyrix333/repos","events_url":"https://api.github.com/users/cyrix333/events{/privacy}","received_events_url":"https://api.github.com/users/cyrix333/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-11-26T23:32:56Z","updated_at":"2015-11-26T23:32:56Z","closed_at":null,"body":"Hi there,\r\nI cant believe it .. maybe its too late or its really like that\r\n\r\nI have 10 features ( cols with data ) and the RMPSE depends on\r\nthe position and the numer of features ( less features will give a better RMPSE - value )\r\n\r\nhere is a lis, first colunm is the RMPSE value second the coloumn title\r\n\r\n```R\r\n#0.24 c(\"Store\",\"DayOfWeek\",\"Open\",\"Promo\",\"Assortment\", \"StoreType\" )\r\n#0.22 c(\"Store\",\"DayOfWeek\",\"Open\",\"Promo\",\"Assortment\", \"StoreType\", \"year\" )\r\n#0.22 c(\"Store\",\"DayOfWeek\",\"Open\",\"Promo\",\"Assortment\", \"StoreType\", \"month\" )\r\n#0.31 c(\"Store\",\"DayOfWeek\",\"Open\",\"Promo\",\"Assortment\", \"StoreType\", \"month\", \"CompetitionDistance\" )\r\n#0.27 c(\"Store\",\"DayOfWeek\",\"Open\",\"Promo\",\"Assortment\", \"StoreType\", \"CompetitionDistance\" )\r\n#0.23 c(\"Store\",\"DayOfWeek\",\"Open\",\"Promo\",\"Assortment\", \"StoreType\", \"Day\" )\r\n#0.27 c(\"Store\",\"DayOfWeek\", \"Promo\",\"Assortment\", \"StoreType\", \"Day\" )\r\n#0.25 c(\"Store\",\"DayOfWeek\", \"Assortment\", \"Day\" )\r\n#0.35 c(\"Store\",\"DayOfWeek\", \"Day\" )\r\n#0.36 c(\"Store\", \"Day\", \"Promo\" )\r\n\r\n#0.19 c(\"Store\",\"DayOfWeek\",\"Promo\",\"Assortment\",\"Day\" )                          \r\n#0.19 c(\"Store\",\"DayOfWeek\",\"Promo\",\"Assortment\",\"Day\" )    check next line all features are the same just the position changed !                      \r\n\r\n#0.31 c(\"Store\",\"Day\",\"Promo\",\"Assortment\",\"DayOfWeek\" )\r\n\r\n#0.24 c(\"Store\", \"Day\", \"Promo\", \"Assortment\" )\r\n```\r\n\r\n\r\nI am using R with windows\r\nis this really true ?! does the position has so much influence ?! .. still cant belive it "}}