{"action":"created","issue":{"url":"https://api.github.com/repos/fchollet/keras/issues/2566","repository_url":"https://api.github.com/repos/fchollet/keras","labels_url":"https://api.github.com/repos/fchollet/keras/issues/2566/labels{/name}","comments_url":"https://api.github.com/repos/fchollet/keras/issues/2566/comments","events_url":"https://api.github.com/repos/fchollet/keras/issues/2566/events","html_url":"https://github.com/fchollet/keras/issues/2566","id":152035845,"number":2566,"title":"Error backpropagation in Keras","user":{"login":"tkrishp","id":2769714,"avatar_url":"https://avatars.githubusercontent.com/u/2769714?v=3","gravatar_id":"","url":"https://api.github.com/users/tkrishp","html_url":"https://github.com/tkrishp","followers_url":"https://api.github.com/users/tkrishp/followers","following_url":"https://api.github.com/users/tkrishp/following{/other_user}","gists_url":"https://api.github.com/users/tkrishp/gists{/gist_id}","starred_url":"https://api.github.com/users/tkrishp/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tkrishp/subscriptions","organizations_url":"https://api.github.com/users/tkrishp/orgs","repos_url":"https://api.github.com/users/tkrishp/repos","events_url":"https://api.github.com/users/tkrishp/events{/privacy}","received_events_url":"https://api.github.com/users/tkrishp/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2016-04-30T15:13:56Z","updated_at":"2016-04-30T15:34:13Z","closed_at":null,"body":"Hi,\r\n\r\nI'm new to Keras and currently evaluating the library for my research purpose. Could someone clarify if Keras supports error backpropagation to train a neural network built using DenseLayers? I could not find any references in the documentation. I'm working on a multi-class classification problem and the objective function is 'categorical_crossentropy'.\r\n\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/fchollet/keras/issues/comments/215973686","html_url":"https://github.com/fchollet/keras/issues/2566#issuecomment-215973686","issue_url":"https://api.github.com/repos/fchollet/keras/issues/2566","id":215973686,"user":{"login":"joelthchao","id":10974532,"avatar_url":"https://avatars.githubusercontent.com/u/10974532?v=3","gravatar_id":"","url":"https://api.github.com/users/joelthchao","html_url":"https://github.com/joelthchao","followers_url":"https://api.github.com/users/joelthchao/followers","following_url":"https://api.github.com/users/joelthchao/following{/other_user}","gists_url":"https://api.github.com/users/joelthchao/gists{/gist_id}","starred_url":"https://api.github.com/users/joelthchao/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/joelthchao/subscriptions","organizations_url":"https://api.github.com/users/joelthchao/orgs","repos_url":"https://api.github.com/users/joelthchao/repos","events_url":"https://api.github.com/users/joelthchao/events{/privacy}","received_events_url":"https://api.github.com/users/joelthchao/received_events","type":"User","site_admin":false},"created_at":"2016-04-30T15:34:13Z","updated_at":"2016-04-30T15:34:13Z","body":"Please reference to [keras/examples](https://github.com/fchollet/keras/blob/master/examples) folder, there are lots of good examples.\r\nFor example, [mnist example](https://github.com/fchollet/keras/blob/master/examples/mnist_mlp.py) shows you how to build a multi-class classification problem."}}