{"action":"created","issue":{"url":"https://api.github.com/repos/scikit-learn/scikit-learn/issues/2053","labels_url":"https://api.github.com/repos/scikit-learn/scikit-learn/issues/2053/labels{/name}","comments_url":"https://api.github.com/repos/scikit-learn/scikit-learn/issues/2053/comments","events_url":"https://api.github.com/repos/scikit-learn/scikit-learn/issues/2053/events","html_url":"https://github.com/scikit-learn/scikit-learn/issues/2053","id":15379210,"number":2053,"title":"GradientBoostingClassifier train_score bug","user":{"login":"AngeldsWang","id":3085434,"avatar_url":"https://avatars.githubusercontent.com/u/3085434?v=3","gravatar_id":"","url":"https://api.github.com/users/AngeldsWang","html_url":"https://github.com/AngeldsWang","followers_url":"https://api.github.com/users/AngeldsWang/followers","following_url":"https://api.github.com/users/AngeldsWang/following{/other_user}","gists_url":"https://api.github.com/users/AngeldsWang/gists{/gist_id}","starred_url":"https://api.github.com/users/AngeldsWang/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/AngeldsWang/subscriptions","organizations_url":"https://api.github.com/users/AngeldsWang/orgs","repos_url":"https://api.github.com/users/AngeldsWang/repos","events_url":"https://api.github.com/users/AngeldsWang/events{/privacy}","received_events_url":"https://api.github.com/users/AngeldsWang/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/scikit-learn/scikit-learn/labels/Bug","name":"Bug","color":"e10c02"},{"url":"https://api.github.com/repos/scikit-learn/scikit-learn/labels/Moderate","name":"Moderate","color":"e102d8"}],"state":"closed","locked":false,"assignee":{"login":"pprett","id":111730,"avatar_url":"https://avatars.githubusercontent.com/u/111730?v=3","gravatar_id":"","url":"https://api.github.com/users/pprett","html_url":"https://github.com/pprett","followers_url":"https://api.github.com/users/pprett/followers","following_url":"https://api.github.com/users/pprett/following{/other_user}","gists_url":"https://api.github.com/users/pprett/gists{/gist_id}","starred_url":"https://api.github.com/users/pprett/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pprett/subscriptions","organizations_url":"https://api.github.com/users/pprett/orgs","repos_url":"https://api.github.com/users/pprett/repos","events_url":"https://api.github.com/users/pprett/events{/privacy}","received_events_url":"https://api.github.com/users/pprett/received_events","type":"User","site_admin":false},"milestone":{"url":"https://api.github.com/repos/scikit-learn/scikit-learn/milestones/13","html_url":"https://github.com/scikit-learn/scikit-learn/milestones/0.15.1","labels_url":"https://api.github.com/repos/scikit-learn/scikit-learn/milestones/13/labels","id":722052,"number":13,"title":"0.15.1","description":null,"creator":{"login":"ogrisel","id":89061,"avatar_url":"https://avatars.githubusercontent.com/u/89061?v=3","gravatar_id":"","url":"https://api.github.com/users/ogrisel","html_url":"https://github.com/ogrisel","followers_url":"https://api.github.com/users/ogrisel/followers","following_url":"https://api.github.com/users/ogrisel/following{/other_user}","gists_url":"https://api.github.com/users/ogrisel/gists{/gist_id}","starred_url":"https://api.github.com/users/ogrisel/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ogrisel/subscriptions","organizations_url":"https://api.github.com/users/ogrisel/orgs","repos_url":"https://api.github.com/users/ogrisel/repos","events_url":"https://api.github.com/users/ogrisel/events{/privacy}","received_events_url":"https://api.github.com/users/ogrisel/received_events","type":"User","site_admin":false},"open_issues":0,"closed_issues":27,"state":"closed","created_at":"2014-07-15T17:22:35Z","updated_at":"2015-01-22T16:09:11Z","due_on":null,"closed_at":"2015-01-22T16:09:11Z"},"comments":11,"created_at":"2013-06-11T03:11:37Z","updated_at":"2015-04-22T06:15:57Z","closed_at":"2014-07-18T15:23:52Z","body":"When I increased the n_estimators to 1000, the train score, suddenly, jumped to a large number as follows:\r\n...\r\nbuilt tree 723 of 1000, train score = 1.318154e-01\r\nbuilt tree 724 of 1000, train score = 1.317394e-01\r\nbuilt tree 725 of 1000, train score = 1.317101e-01\r\nbuilt tree 726 of 1000, train score = 6.835322e+12\r\nbuilt tree 727 of 1000, train score = 6.835322e+12\r\nbuilt tree 728 of 1000, train score = 6.835322e+12\r\nbuilt tree 729 of 1000, train score = 6.835322e+12\r\nbuilt tree 730 of 1000, train score = 6.835322e+12\r\n...\r\n\r\nand kept 6.835322e+12 with no change.\r\n\r\nThanks"},"comment":{"url":"https://api.github.com/repos/scikit-learn/scikit-learn/issues/comments/95043673","html_url":"https://github.com/scikit-learn/scikit-learn/issues/2053#issuecomment-95043673","issue_url":"https://api.github.com/repos/scikit-learn/scikit-learn/issues/2053","id":95043673,"user":{"login":"arjoly","id":1274722,"avatar_url":"https://avatars.githubusercontent.com/u/1274722?v=3","gravatar_id":"","url":"https://api.github.com/users/arjoly","html_url":"https://github.com/arjoly","followers_url":"https://api.github.com/users/arjoly/followers","following_url":"https://api.github.com/users/arjoly/following{/other_user}","gists_url":"https://api.github.com/users/arjoly/gists{/gist_id}","starred_url":"https://api.github.com/users/arjoly/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/arjoly/subscriptions","organizations_url":"https://api.github.com/users/arjoly/orgs","repos_url":"https://api.github.com/users/arjoly/repos","events_url":"https://api.github.com/users/arjoly/events{/privacy}","received_events_url":"https://api.github.com/users/arjoly/received_events","type":"User","site_admin":false},"created_at":"2015-04-22T06:15:57Z","updated_at":"2015-04-22T06:15:57Z","body":"In that case, you might want to try with a slower the `learning_rate`."}}