{"action":"created","issue":{"url":"https://api.github.com/repos/brk00/simplex-phase2/issues/2","labels_url":"https://api.github.com/repos/brk00/simplex-phase2/issues/2/labels{/name}","comments_url":"https://api.github.com/repos/brk00/simplex-phase2/issues/2/comments","events_url":"https://api.github.com/repos/brk00/simplex-phase2/issues/2/events","html_url":"https://github.com/brk00/simplex-phase2/issues/2","id":75439770,"number":2,"title":"Problem on reducedCost","user":{"login":"brk00","id":1280742,"avatar_url":"https://avatars.githubusercontent.com/u/1280742?v=3","gravatar_id":"","url":"https://api.github.com/users/brk00","html_url":"https://github.com/brk00","followers_url":"https://api.github.com/users/brk00/followers","following_url":"https://api.github.com/users/brk00/following{/other_user}","gists_url":"https://api.github.com/users/brk00/gists{/gist_id}","starred_url":"https://api.github.com/users/brk00/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/brk00/subscriptions","organizations_url":"https://api.github.com/users/brk00/orgs","repos_url":"https://api.github.com/users/brk00/repos","events_url":"https://api.github.com/users/brk00/events{/privacy}","received_events_url":"https://api.github.com/users/brk00/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":6,"created_at":"2015-05-12T03:09:14Z","updated_at":"2015-05-12T14:32:16Z","closed_at":null,"body":"On line 16 we compute:\r\n\r\n```octave\r\np'*A(:, nbind)\r\n```\r\n\r\nAnd this gives us a row vector. This line vector is subtracted from `c(nbind)`, that is a column vector. There is, therefore, an error, since we would expect `p'*A(:, nbind)` to also result on a column vector.\r\n\r\nIs anything wrong with our `p`? "},"comment":{"url":"https://api.github.com/repos/brk00/simplex-phase2/issues/comments/101301768","html_url":"https://github.com/brk00/simplex-phase2/issues/2#issuecomment-101301768","issue_url":"https://api.github.com/repos/brk00/simplex-phase2/issues/2","id":101301768,"user":{"login":"brk00","id":1280742,"avatar_url":"https://avatars.githubusercontent.com/u/1280742?v=3","gravatar_id":"","url":"https://api.github.com/users/brk00","html_url":"https://github.com/brk00","followers_url":"https://api.github.com/users/brk00/followers","following_url":"https://api.github.com/users/brk00/following{/other_user}","gists_url":"https://api.github.com/users/brk00/gists{/gist_id}","starred_url":"https://api.github.com/users/brk00/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/brk00/subscriptions","organizations_url":"https://api.github.com/users/brk00/orgs","repos_url":"https://api.github.com/users/brk00/repos","events_url":"https://api.github.com/users/brk00/events{/privacy}","received_events_url":"https://api.github.com/users/brk00/received_events","type":"User","site_admin":false},"created_at":"2015-05-12T14:32:16Z","updated_at":"2015-05-12T14:32:16Z","body":"I woudn't care if our `redc` is a row vector. This \"problem\" is a little bit strange for me since the reduced costs is defined as:\r\n\r\n```\r\n\\bar{c_j} = c_j - c_b' B^{-1} A_j\r\n```\r\nBut suppose we have not one, but many `j`s. A_j clearly becomes a matrix with the columns of A respective to each `j`.\r\n\r\nBut what happens to `c_j`? It becomes a row vector? A column vector? I believe we are free to choose, as we did."}}