{"action":"created","issue":{"url":"https://api.github.com/repos/apache/spark/issues/4459","labels_url":"https://api.github.com/repos/apache/spark/issues/4459/labels{/name}","comments_url":"https://api.github.com/repos/apache/spark/issues/4459/comments","events_url":"https://api.github.com/repos/apache/spark/issues/4459/events","html_url":"https://github.com/apache/spark/pull/4459","id":56966161,"number":4459,"title":"[SPARK-5021] [MLlib] Gaussian Mixture now supports Sparse Input","user":{"login":"MechCoder","id":1867024,"avatar_url":"https://avatars.githubusercontent.com/u/1867024?v=3","gravatar_id":"","url":"https://api.github.com/users/MechCoder","html_url":"https://github.com/MechCoder","followers_url":"https://api.github.com/users/MechCoder/followers","following_url":"https://api.github.com/users/MechCoder/following{/other_user}","gists_url":"https://api.github.com/users/MechCoder/gists{/gist_id}","starred_url":"https://api.github.com/users/MechCoder/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MechCoder/subscriptions","organizations_url":"https://api.github.com/users/MechCoder/orgs","repos_url":"https://api.github.com/users/MechCoder/repos","events_url":"https://api.github.com/users/MechCoder/events{/privacy}","received_events_url":"https://api.github.com/users/MechCoder/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":29,"created_at":"2015-02-08T20:27:32Z","updated_at":"2015-02-10T09:21:12Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/4459","html_url":"https://github.com/apache/spark/pull/4459","diff_url":"https://github.com/apache/spark/pull/4459.diff","patch_url":"https://github.com/apache/spark/pull/4459.patch"},"body":"Following discussion in the Jira."},"comment":{"url":"https://api.github.com/repos/apache/spark/issues/comments/73667895","html_url":"https://github.com/apache/spark/pull/4459#issuecomment-73667895","issue_url":"https://api.github.com/repos/apache/spark/issues/4459","id":73667895,"user":{"login":"MechCoder","id":1867024,"avatar_url":"https://avatars.githubusercontent.com/u/1867024?v=3","gravatar_id":"","url":"https://api.github.com/users/MechCoder","html_url":"https://github.com/MechCoder","followers_url":"https://api.github.com/users/MechCoder/followers","following_url":"https://api.github.com/users/MechCoder/following{/other_user}","gists_url":"https://api.github.com/users/MechCoder/gists{/gist_id}","starred_url":"https://api.github.com/users/MechCoder/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MechCoder/subscriptions","organizations_url":"https://api.github.com/users/MechCoder/orgs","repos_url":"https://api.github.com/users/MechCoder/repos","events_url":"https://api.github.com/users/MechCoder/events{/privacy}","received_events_url":"https://api.github.com/users/MechCoder/received_events","type":"User","site_admin":false},"created_at":"2015-02-10T09:21:12Z","updated_at":"2015-02-10T09:21:12Z","body":"@mengxr Just to make it easier for you, a small description. GaussianMixture used to support sparse input, by converting it to DenseVectors, which is non-optimal, in case of a large number of zeros. This PR makes sure that the model works without this conversion happening."}}