Mixed-signal approximate computation: A neural predictor case study.
Renée St. Amant, Daniel A. Jiménez, and Doug Burger. IEEE Micro, "Top picks from the computer architecture conferences", vol. 29, no. 1, January/February 2009.

Low-power, high-performance analog neural branch prediction.
Renée St. Amant, Daniel A. Jiménez, and Doug Burger. Proceedings of the 41st Annual International Symposium on Microarchitecture (MICRO-41). Lake Como, Italy, November 2008. [pdf] [ps]
(IEEE Micro Top Pick)