This is cool: http://lca2011.linux.org.au/programme/schedule/view_talk/213?day=None
That is the first Mahout talk I have seen announced by somebody whose name I don't recognize. It looks like a reasonable topic and I will be interested to hear how their results turned out. Are Aneesha Bakharia and/or Aaron Tan lurking on this list? Did you want some review eyeballs for your presentation, especially closer to your presentation in January?
