{"action":"created","issue":{"url":"https://api.github.com/repos/cms-sw/cmssw/issues/8949","labels_url":"https://api.github.com/repos/cms-sw/cmssw/issues/8949/labels{/name}","comments_url":"https://api.github.com/repos/cms-sw/cmssw/issues/8949/comments","events_url":"https://api.github.com/repos/cms-sw/cmssw/issues/8949/events","html_url":"https://github.com/cms-sw/cmssw/pull/8949","id":73014217,"number":8949,"title":"Fix for high energy behaviour of ecal pfcluster corrections","user":{"login":"bendavid","id":4920798,"avatar_url":"https://avatars.githubusercontent.com/u/4920798?v=3","gravatar_id":"","url":"https://api.github.com/users/bendavid","html_url":"https://github.com/bendavid","followers_url":"https://api.github.com/users/bendavid/followers","following_url":"https://api.github.com/users/bendavid/following{/other_user}","gists_url":"https://api.github.com/users/bendavid/gists{/gist_id}","starred_url":"https://api.github.com/users/bendavid/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bendavid/subscriptions","organizations_url":"https://api.github.com/users/bendavid/orgs","repos_url":"https://api.github.com/users/bendavid/repos","events_url":"https://api.github.com/users/bendavid/events{/privacy}","received_events_url":"https://api.github.com/users/bendavid/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/cms-sw/cmssw/labels/comparison-pending","name":"comparison-pending","color":"fef2c0"},{"url":"https://api.github.com/repos/cms-sw/cmssw/labels/orp-pending","name":"orp-pending","color":"fbca04"},{"url":"https://api.github.com/repos/cms-sw/cmssw/labels/pending-signatures","name":"pending-signatures","color":"eb6420"},{"url":"https://api.github.com/repos/cms-sw/cmssw/labels/reconstruction-pending","name":"reconstruction-pending","color":"fbca04"},{"url":"https://api.github.com/repos/cms-sw/cmssw/labels/tests-approved","name":"tests-approved","color":"009800"}],"state":"open","locked":false,"assignee":null,"milestone":{"url":"https://api.github.com/repos/cms-sw/cmssw/milestones/51","html_url":"https://github.com/cms-sw/cmssw/milestones/Next%20CMSSW_7_5_X","labels_url":"https://api.github.com/repos/cms-sw/cmssw/milestones/51/labels","id":982516,"number":51,"title":"Next CMSSW_7_5_X","description":"","creator":{"login":"nclopezo","id":1944922,"avatar_url":"https://avatars.githubusercontent.com/u/1944922?v=3","gravatar_id":"","url":"https://api.github.com/users/nclopezo","html_url":"https://github.com/nclopezo","followers_url":"https://api.github.com/users/nclopezo/followers","following_url":"https://api.github.com/users/nclopezo/following{/other_user}","gists_url":"https://api.github.com/users/nclopezo/gists{/gist_id}","starred_url":"https://api.github.com/users/nclopezo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nclopezo/subscriptions","organizations_url":"https://api.github.com/users/nclopezo/orgs","repos_url":"https://api.github.com/users/nclopezo/repos","events_url":"https://api.github.com/users/nclopezo/events{/privacy}","received_events_url":"https://api.github.com/users/nclopezo/received_events","type":"User","site_admin":false},"open_issues":50,"closed_issues":493,"state":"open","created_at":"2015-02-17T08:21:25Z","updated_at":"2015-05-04T13:04:21Z","due_on":"2015-03-02T23:00:00Z","closed_at":null},"comments":5,"created_at":"2015-05-04T13:02:42Z","updated_at":"2015-05-04T14:24:53Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/cms-sw/cmssw/pulls/8949","html_url":"https://github.com/cms-sw/cmssw/pull/8949","diff_url":"https://github.com/cms-sw/cmssw/pull/8949.diff","patch_url":"https://github.com/cms-sw/cmssw/pull/8949.patch"},"body":"limit maximum energy (pt) for ecal pf cluster corrections to avoid bad extrapolation beyond region of correction derivation.  At 1TeV this was introducing a ~1% scale shift in the barrel and a ~10% scale shift in the endcap.\r\n\r\nLikely issue is limited kinematic coverage of training sample combined with tails in the energy response distribution sufficiently large to create well-populated BDT bins in the region about the kinematic limit of the sample, where all photons are by construction overmeasured (and therefore overcorrected downwards in energy)\r\n\r\n@bachtis @lgray @matteosan1\r\n\r\n@konush can you incorporate this change into your evaluation scripts and run the validation plots again to make sure this doesn't introduce any strange behaviour in scale/resolution vs eta/pt?  (at least up to the kinematic limit in the present samples...)\r\n"},"comment":{"url":"https://api.github.com/repos/cms-sw/cmssw/issues/comments/98726001","html_url":"https://github.com/cms-sw/cmssw/pull/8949#issuecomment-98726001","issue_url":"https://api.github.com/repos/cms-sw/cmssw/issues/8949","id":98726001,"user":{"login":"konush","id":5539797,"avatar_url":"https://avatars.githubusercontent.com/u/5539797?v=3","gravatar_id":"","url":"https://api.github.com/users/konush","html_url":"https://github.com/konush","followers_url":"https://api.github.com/users/konush/followers","following_url":"https://api.github.com/users/konush/following{/other_user}","gists_url":"https://api.github.com/users/konush/gists{/gist_id}","starred_url":"https://api.github.com/users/konush/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/konush/subscriptions","organizations_url":"https://api.github.com/users/konush/orgs","repos_url":"https://api.github.com/users/konush/repos","events_url":"https://api.github.com/users/konush/events{/privacy}","received_events_url":"https://api.github.com/users/konush/received_events","type":"User","site_admin":false},"created_at":"2015-05-04T14:24:53Z","updated_at":"2015-05-04T14:24:53Z","body":"@bendavid which energy limit to take?"}}