{"action":"created","issue":{"url":"https://api.github.com/repos/blei-lab/edward/issues/327","repository_url":"https://api.github.com/repos/blei-lab/edward","labels_url":"https://api.github.com/repos/blei-lab/edward/issues/327/labels{/name}","comments_url":"https://api.github.com/repos/blei-lab/edward/issues/327/comments","events_url":"https://api.github.com/repos/blei-lab/edward/issues/327/events","html_url":"https://github.com/blei-lab/edward/pull/327","id":187912210,"number":327,"title":"Data subsampling","user":{"login":"dustinvtran","id":2569867,"avatar_url":"https://avatars.githubusercontent.com/u/2569867?v=3","gravatar_id":"","url":"https://api.github.com/users/dustinvtran","html_url":"https://github.com/dustinvtran","followers_url":"https://api.github.com/users/dustinvtran/followers","following_url":"https://api.github.com/users/dustinvtran/following{/other_user}","gists_url":"https://api.github.com/users/dustinvtran/gists{/gist_id}","starred_url":"https://api.github.com/users/dustinvtran/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dustinvtran/subscriptions","organizations_url":"https://api.github.com/users/dustinvtran/orgs","repos_url":"https://api.github.com/users/dustinvtran/repos","events_url":"https://api.github.com/users/dustinvtran/events{/privacy}","received_events_url":"https://api.github.com/users/dustinvtran/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":5,"created_at":"2016-11-08T06:28:16Z","updated_at":"2016-11-13T20:14:54Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/blei-lab/edward/pulls/327","html_url":"https://github.com/blei-lab/edward/pull/327","diff_url":"https://github.com/blei-lab/edward/pull/327.diff","patch_url":"https://github.com/blei-lab/edward/pull/327.patch"},"body":"+ issues: fix #311; fix #26 \r\n\r\nimplementation of data subsampling with proper scaling of local to global variables. also see section 4.5 of [iclr submission](http://openreview.net/forum?id=Hy6b4Pqee)\r\n\r\n## reviewer suggestions\r\nanyone, e.g., @bayerj, @mariru, @akucukelbir"},"comment":{"url":"https://api.github.com/repos/blei-lab/edward/issues/comments/260209384","html_url":"https://github.com/blei-lab/edward/pull/327#issuecomment-260209384","issue_url":"https://api.github.com/repos/blei-lab/edward/issues/327","id":260209384,"user":{"login":"dustinvtran","id":2569867,"avatar_url":"https://avatars.githubusercontent.com/u/2569867?v=3","gravatar_id":"","url":"https://api.github.com/users/dustinvtran","html_url":"https://github.com/dustinvtran","followers_url":"https://api.github.com/users/dustinvtran/followers","following_url":"https://api.github.com/users/dustinvtran/following{/other_user}","gists_url":"https://api.github.com/users/dustinvtran/gists{/gist_id}","starred_url":"https://api.github.com/users/dustinvtran/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dustinvtran/subscriptions","organizations_url":"https://api.github.com/users/dustinvtran/orgs","repos_url":"https://api.github.com/users/dustinvtran/repos","events_url":"https://api.github.com/users/dustinvtran/events{/privacy}","received_events_url":"https://api.github.com/users/dustinvtran/received_events","type":"User","site_admin":false},"created_at":"2016-11-13T20:14:54Z","updated_at":"2016-11-13T20:14:54Z","body":"@akucukelbir: okay. i got the `probabilistic_pca_subsampling.py` example working. aside from working on subgraphs, there were two additional tricks i employed:\r\n\r\n+ define the full set of variational parameters; then index them accordingly as inference is run. this avoids having to reinitialize local parameters and start from scratch for every minibatch. \r\n+ define two inferences: a global inference over w conditional on z, and a local inference on z conditional on w. this avoids the optimizer history being the same for both global and local variables.\r\n\r\nthe doc is updated to reflect these. now waiting your greenlight. if you approve, feel free to merge."}}
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