There are also a number of similarity search indexes available: http://obsearch.net/ http://obsearch.net/ http://www.sisap.org/Metric_Space_Library.html http://

There are also a number of similarity search indexes available: http://obsearch.net/ http://obsearch.net/ http://www.sisap.org/Metric_Space_Library.html http://www.sisap.org/Metric_Space_Library.html http://lshkit.sourceforge.net/ http://lshkit.sourceforge.net/