<p>We have highly popular question, on extremely popular topic that has an outdated answers (most from 2010, newest ones from 2015): <a href="https://stats.stackexchange.com/questions/181/how-to-choose-the-number-of-hidden-layers-and-nodes-in-a-feedforward-neural-netw">How to choose the number of hidden layers and nodes in a feedforward neural network?</a> The most upvoted answers suggests to choose single hidden layer, while the recent achievements in deep learning show something opposite: the best results are achieved by networks with multiple hidden layers. Moreover, for some problems like image recognition, simple dense networks with single hidden layer are very far from state of the art. Since I'm not an expert in deep learning, I don't feel that I could give a detailed answer on that. On another hand, nobody did recently give an update. I myself offered a bounty for the update answer, but there was no response. What should we do in such cases? I guess this that we don't want to be a repository of outdated knowledge...</p>
