Here are some links you might find interesting:

Sun XACML Implementation v 1.2

http://sunxacml.sourceforge.net/

XACML Documents

http://www.oasis-open.org/committees/xacml/

Sun XACML Programmer’s Guide

http://sunxacml.sourceforge.net/guide.html

Some papers by Rakesh Aggarwal on Hippocratic Databases

http://rakesh.agrawal-family.com/pubs.html

Neural Networks and Character Recognition

http://www.ccs.neu.edu/home/feneric/charrecnn.htm

Training Multi- layer neural Networks... 

http://galaxy.agh.edu.pl/~vlsi/AI/backp_t_en/backprop.html