{"action":"opened","issue":{"url":"https://api.github.com/repos/bzamecnik/ml-playground/issues/2","repository_url":"https://api.github.com/repos/bzamecnik/ml-playground","labels_url":"https://api.github.com/repos/bzamecnik/ml-playground/issues/2/labels{/name}","comments_url":"https://api.github.com/repos/bzamecnik/ml-playground/issues/2/comments","events_url":"https://api.github.com/repos/bzamecnik/ml-playground/issues/2/events","html_url":"https://github.com/bzamecnik/ml-playground/issues/2","id":148926068,"number":2,"title":"Compare a few approaches to binary pitch class vector classification","user":{"login":"bzamecnik","id":446124,"avatar_url":"https://avatars.githubusercontent.com/u/446124?v=3","gravatar_id":"","url":"https://api.github.com/users/bzamecnik","html_url":"https://github.com/bzamecnik","followers_url":"https://api.github.com/users/bzamecnik/followers","following_url":"https://api.github.com/users/bzamecnik/following{/other_user}","gists_url":"https://api.github.com/users/bzamecnik/gists{/gist_id}","starred_url":"https://api.github.com/users/bzamecnik/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bzamecnik/subscriptions","organizations_url":"https://api.github.com/users/bzamecnik/orgs","repos_url":"https://api.github.com/users/bzamecnik/repos","events_url":"https://api.github.com/users/bzamecnik/events{/privacy}","received_events_url":"https://api.github.com/users/bzamecnik/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-04-17T07:12:36Z","updated_at":"2016-04-17T07:12:36Z","closed_at":null,"body":"- Input: continuous chroma vector (many octaves, values in dB).\r\n- Output: binary vector of activity of pitch classes (merged to single octave).\r\n\r\nApproches:\r\n- single frame (no context) + 1D convolution net\r\n- fixed window to history (some context) + 2D convolution net\r\n- \"unlimited\" history + RNN (eg. LSTM)\r\n- bidirectional RNN (also future context)\r\n- CNN+RNN (?)"}}