{"action":"opened","issue":{"url":"https://api.github.com/repos/deeplearning4j/deeplearning4j/issues/516","labels_url":"https://api.github.com/repos/deeplearning4j/deeplearning4j/issues/516/labels{/name}","comments_url":"https://api.github.com/repos/deeplearning4j/deeplearning4j/issues/516/comments","events_url":"https://api.github.com/repos/deeplearning4j/deeplearning4j/issues/516/events","html_url":"https://github.com/deeplearning4j/deeplearning4j/issues/516","id":97338730,"number":516,"title":"GravesLSTM.gradient(), not yet implemented","user":{"login":"jadams5","id":1060287,"avatar_url":"https://avatars.githubusercontent.com/u/1060287?v=3","gravatar_id":"","url":"https://api.github.com/users/jadams5","html_url":"https://github.com/jadams5","followers_url":"https://api.github.com/users/jadams5/followers","following_url":"https://api.github.com/users/jadams5/following{/other_user}","gists_url":"https://api.github.com/users/jadams5/gists{/gist_id}","starred_url":"https://api.github.com/users/jadams5/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jadams5/subscriptions","organizations_url":"https://api.github.com/users/jadams5/orgs","repos_url":"https://api.github.com/users/jadams5/repos","events_url":"https://api.github.com/users/jadams5/events{/privacy}","received_events_url":"https://api.github.com/users/jadams5/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-07-26T18:12:52Z","updated_at":"2015-07-26T18:12:52Z","closed_at":null,"body":"When trying to use GravesLSTM in a multilayer network, it throws the following exception:\r\n\r\nException in thread \"main\" java.lang.UnsupportedOperationException: Not yet implemented\r\n\tat org.deeplearning4j.nn.layers.recurrent.GravesLSTM.gradient(GravesLSTM.java:65)\r\n\tat org.deeplearning4j.nn.layers.BaseLayer.gradientAndScore(BaseLayer.java:499)\r\n\tat org.deeplearning4j.optimize.solvers.BaseOptimizer.gradientAndScore(BaseOptimizer.java:115)\r\n\tat org.deeplearning4j.optimize.solvers.BaseOptimizer.optimize(BaseOptimizer.java:131)\r\n\tat org.deeplearning4j.optimize.Solver.optimize(Solver.java:52)\r\n\tat org.deeplearning4j.nn.layers.BaseLayer.fit(BaseLayer.java:493)\r\n\tat org.deeplearning4j.nn.multilayer.MultiLayerNetwork.pretrain(MultiLayerNetwork.java:215)\r\n\tat org.deeplearning4j.nn.multilayer.MultiLayerNetwork.fit(MultiLayerNetwork.java:1267)\r\n\tat com.tsi.DL4JTest.main(DL4JTest.java:73)"}}