{"action":"opened","issue":{"url":"https://api.github.com/repos/EconForge/dolo/issues/69","labels_url":"https://api.github.com/repos/EconForge/dolo/issues/69/labels{/name}","comments_url":"https://api.github.com/repos/EconForge/dolo/issues/69/comments","events_url":"https://api.github.com/repos/EconForge/dolo/issues/69/events","html_url":"https://github.com/EconForge/dolo/issues/69","id":62226461,"number":69,"title":"sparse grid prediction poor","user":{"login":"denfromufa","id":7870949,"avatar_url":"https://avatars.githubusercontent.com/u/7870949?v=3","gravatar_id":"","url":"https://api.github.com/users/denfromufa","html_url":"https://github.com/denfromufa","followers_url":"https://api.github.com/users/denfromufa/followers","following_url":"https://api.github.com/users/denfromufa/following{/other_user}","gists_url":"https://api.github.com/users/denfromufa/gists{/gist_id}","starred_url":"https://api.github.com/users/denfromufa/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/denfromufa/subscriptions","organizations_url":"https://api.github.com/users/denfromufa/orgs","repos_url":"https://api.github.com/users/denfromufa/repos","events_url":"https://api.github.com/users/denfromufa/events{/privacy}","received_events_url":"https://api.github.com/users/denfromufa/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-03-16T22:38:28Z","updated_at":"2015-03-16T22:38:28Z","closed_at":null,"body":"I followed the example in this page:\r\n\r\nhttp://www.econforge.org/dolo/_modules/dolo/numeric/interpolation/smolyak.html\r\n\r\nFirst of all, the latest code does not correspond to this sample.\r\n\r\n```\r\n#bounds = numpy.array([\r\nsmin=    [ -1, -1 ]   # lower bounds\r\nsmax=    [ 1, 1 ]   # upper bounds\r\n#])\r\n```\r\n\r\nSome of the arrays in the code have to be transposed.\r\n\r\nThen the interpolation is very poor:\r\n\r\n\r\nMaximum error : 27.0671814924 when smolyak parameter is 3\r\n\r\nMaximum error : 9.05216715903 when  smolyak parameter is 5\r\n\r\n"}}