A LSTM recurrent neural network was used to learn a learning algorithm: <a href="http:&#x2F;&#x2F;www.bioinf.jku.at&#x2F;publications&#x2F;older&#x2F;1504.pdf" rel="nofollow">http:&#x2F;&#x2F;www.bioinf.jku.at&#x2F;publications&#x2F;older&#x2F;1504.pdf</a>