I saw this paper on reddit.com/r/machinelearning - usually the more interesting ML papers are posted there. Additionally, there is http://www.arxiv-sanity.com/

I saw this paper on reddit.com/r/machinelearning - usually the more interesting ML papers are posted there. Additionally, there is http://www.arxiv-sanity.com/ http://www.arxiv-sanity.com/ which sorts new machine learning papers by popularity.