I am slightly shocked and simply amused that the recent Google Venice Update has largely flown under the radar. The Inside Search Blog published a list of 40 some-odd changes to the algorithm for February, and it seems that Panda 3.3 and the mysterious one liner about link valuation captivated most of the SEO and Inbound world...
Orland Hoeber. Proceedings of the 2008 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology - Volume 03, page 29--32. Washington, DC, USA, IEEE Computer Society, (2008)
Karen Church, Antony Cousin, and Nuria Oliver. Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services, page 393--402. New York, NY, USA, ACM, (2012)
Laura A. Granka, Thorsten Joachims, and Geri Gay. Proceedings of the 27th annual international ACM SIGIR conference on Research and development in information retrieval, page 478--479. New York, NY, USA, ACM, (2004)