While not open journals per se, many (new) papers will typically be available at academic homepages (preprints), via &quot;All [X] versions&quot;-links in a google scholar [0] search, or on arXiv [1], depending on the subfield.<p>For instance, the machine learning group (Yoshua Bengio, Ian Goodfellow, et al.) at the University of Montreal (the people behind open source software like Theano [2], Pylearn 2 [3], etc.) regularly makes papers available on arXiv, and is currently working on a book about Deep Learning, drafts of which are freely available [4].<p>[0]: <a href="http:&#x2F;&#x2F;scholar.google.com" rel="nofollow">http:&#x2F;&#x2F;scholar.google.com</a>
[1]: <a href="http:&#x2F;&#x2F;arxiv.org" rel="nofollow">http:&#x2F;&#x2F;arxiv.org</a>
[2]: <a href="https:&#x2F;&#x2F;github.com&#x2F;Theano&#x2F;Theano" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;Theano&#x2F;Theano</a>
[3]: <a href="https:&#x2F;&#x2F;github.com&#x2F;lisa-lab&#x2F;pylearn2" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;lisa-lab&#x2F;pylearn2</a>
[4: <a href="http:&#x2F;&#x2F;www.deeplearningbook.org" rel="nofollow">http:&#x2F;&#x2F;www.deeplearningbook.org</a>