{"action":"created","issue":{"url":"https://api.github.com/repos/obophenotype/developmental-stage-ontologies/issues/27","repository_url":"https://api.github.com/repos/obophenotype/developmental-stage-ontologies","labels_url":"https://api.github.com/repos/obophenotype/developmental-stage-ontologies/issues/27/labels{/name}","comments_url":"https://api.github.com/repos/obophenotype/developmental-stage-ontologies/issues/27/comments","events_url":"https://api.github.com/repos/obophenotype/developmental-stage-ontologies/issues/27/events","html_url":"https://github.com/obophenotype/developmental-stage-ontologies/issues/27","id":160466042,"number":27,"title":"Add half-day interval developmental stages to MmusDv","user":{"login":"IlincaTudose","id":3416226,"avatar_url":"https://avatars.githubusercontent.com/u/3416226?v=3","gravatar_id":"","url":"https://api.github.com/users/IlincaTudose","html_url":"https://github.com/IlincaTudose","followers_url":"https://api.github.com/users/IlincaTudose/followers","following_url":"https://api.github.com/users/IlincaTudose/following{/other_user}","gists_url":"https://api.github.com/users/IlincaTudose/gists{/gist_id}","starred_url":"https://api.github.com/users/IlincaTudose/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/IlincaTudose/subscriptions","organizations_url":"https://api.github.com/users/IlincaTudose/orgs","repos_url":"https://api.github.com/users/IlincaTudose/repos","events_url":"https://api.github.com/users/IlincaTudose/events{/privacy}","received_events_url":"https://api.github.com/users/IlincaTudose/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":6,"created_at":"2016-06-15T16:28:06Z","updated_at":"2016-07-12T22:40:14Z","closed_at":null,"body":"We use MmusDv for stages and we appreciate the ontology structure and how well it maps to UBERON and through it to other species. We use it when we can (for stages), but we also need embryonic age in days, at 0.5 days intervals, so e0, e0.5, e1, e1.5 … e22. Would it be possible to add classes for them in MmusDv?"},"comment":{"url":"https://api.github.com/repos/obophenotype/developmental-stage-ontologies/issues/comments/232203833","html_url":"https://github.com/obophenotype/developmental-stage-ontologies/issues/27#issuecomment-232203833","issue_url":"https://api.github.com/repos/obophenotype/developmental-stage-ontologies/issues/27","id":232203833,"user":{"login":"cmungall","id":50745,"avatar_url":"https://avatars.githubusercontent.com/u/50745?v=3","gravatar_id":"","url":"https://api.github.com/users/cmungall","html_url":"https://github.com/cmungall","followers_url":"https://api.github.com/users/cmungall/followers","following_url":"https://api.github.com/users/cmungall/following{/other_user}","gists_url":"https://api.github.com/users/cmungall/gists{/gist_id}","starred_url":"https://api.github.com/users/cmungall/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cmungall/subscriptions","organizations_url":"https://api.github.com/users/cmungall/orgs","repos_url":"https://api.github.com/users/cmungall/repos","events_url":"https://api.github.com/users/cmungall/events{/privacy}","received_events_url":"https://api.github.com/users/cmungall/received_events","type":"User","site_admin":false},"created_at":"2016-07-12T22:40:14Z","updated_at":"2016-07-12T22:40:14Z","body":"> but please notice that these stages overlap \r\n\r\nNote we use the immediately_preceded_by relation, so formally the stages abut (do not overlap)\r\n\r\nBut this obviously conflicts with the textual definitions. If we were to convert to OWL\r\n\r\n TS2: has-part* exactly 2 cell OR has-part exactly 4 cell\r\n TS3: has-part exactly 4 cell OR has-part exactly 8 cell OR has-part exactly 16 cell\r\n\r\nSo long as 'has-part exactly 4 cell' is satisfiable, TS2 and TS3 overlaps.\r\n\r\nThis complicates abilities to use stages in reasoning in some scenarios.\r\n\r\nOne possibility is to fudge this by pretending that the 4-cell stage is arbitrarily temporally bisected in the middle, with the first half apportioned to TS2 and the 2nd half apportioned to TS3.\r\n\r\nOr we could use a weaker relation\r\n"}}
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