%0 Journal Article %T Pylearn2: a machine learning research library %A Ian J. Goodfellow %A David Warde-Farley %A Pascal Lamblin %A Vincent Dumoulin %A Mehdi Mirza %A Razvan Pascanu %A James Bergstra %A Fr¨¦d¨¦ric Bastien %A Yoshua Bengio %J Computer Science %D 2013 %I arXiv %X Pylearn2 is a machine learning research library. This does not just mean that it is a collection of machine learning algorithms that share a common API; it means that it has been designed for flexibility and extensibility in order to facilitate research projects that involve new or unusual use cases. In this paper we give a brief history of the library, an overview of its basic philosophy, a summary of the library's architecture, and a description of how the Pylearn2 community functions socially. %U http://arxiv.org/abs/1308.4214v1