{"action":"opened","issue":{"url":"https://api.github.com/repos/jubatus/jubatus/issues/1105","repository_url":"https://api.github.com/repos/jubatus/jubatus","labels_url":"https://api.github.com/repos/jubatus/jubatus/issues/1105/labels{/name}","comments_url":"https://api.github.com/repos/jubatus/jubatus/issues/1105/comments","events_url":"https://api.github.com/repos/jubatus/jubatus/issues/1105/events","html_url":"https://github.com/jubatus/jubatus/issues/1105","id":147924809,"number":1105,"title":"jubaconv: support IDF calculation","user":{"login":"kmaehashi","id":939877,"avatar_url":"https://avatars.githubusercontent.com/u/939877?v=3","gravatar_id":"","url":"https://api.github.com/users/kmaehashi","html_url":"https://github.com/kmaehashi","followers_url":"https://api.github.com/users/kmaehashi/followers","following_url":"https://api.github.com/users/kmaehashi/following{/other_user}","gists_url":"https://api.github.com/users/kmaehashi/gists{/gist_id}","starred_url":"https://api.github.com/users/kmaehashi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kmaehashi/subscriptions","organizations_url":"https://api.github.com/users/kmaehashi/orgs","repos_url":"https://api.github.com/users/kmaehashi/repos","events_url":"https://api.github.com/users/kmaehashi/events{/privacy}","received_events_url":"https://api.github.com/users/kmaehashi/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-04-13T01:59:31Z","updated_at":"2016-04-13T01:59:31Z","closed_at":null,"body":"Currently jubaconv does not support IDF calculation. It is better to support it.\r\n\r\nI expect two IDF calculation modes:\r\n\r\n* \"online\" IDF mode: frequency is incrementally updated when each data is observed\r\n* \"batch\" IDF mode: frequency is measured from all data before calculating weights"}}