http://www.ceas.cc/schedule.html
- SA2PX: A Tool to Translate SpamAssassin Regular Expression Rules to POSIX Shi Pu, Cheng-Chung Tan and Jyh-Charn Liu http://www.ceas.cc/papers-2009/ceas2009-paper-15.pdf This claims to be 3x faster than sa-compile, although it seems to do this by breaking compatibility with the "standard" rules mechanism; e.g. rule subsumption (a word matching more than 1 rule) is not supported, and /\b/ is translated to a 1-char width match instead of a zero-width assertion. - Training SpamAssassin with Active Semi-supervised Learning Giorgio Fumera, Jun-Ming Xu, Fabio Roli and Zhi-Hua Zhou http://www.ceas.cc/papers-2009/ceas2009-paper-35.pdf An interesting learning technique. And there are of course lots more good papers; those are just the two that directly deal with our work... --j.
