Is this it?<p><a href="http:&#x2F;&#x2F;www.cc.gatech.edu&#x2F;~vempala&#x2F;papers&#x2F;categorization.pdf" rel="nofollow">http:&#x2F;&#x2F;www.cc.gatech.edu&#x2F;~vempala&#x2F;papers&#x2F;categorization.pdf</a>