Supported by National Basic Research Program of China (Grant No.2006CB303103);the National Natural Science Foundation of China (Grant Nos.60873011,60802026,60773219,60773021);the High Technology Program (Grant No.2007AA01Z192)
The query space of a similarity query is usually narrowed down by pruning inactive query subspaces which contain no query results and keeping active query subspaces which may contain objects corre- sponding to the req...