Introduction Problem Definition Fast Query Speed o By using hashing scheme,we can achieve constant or sub-linear search time complexity. Exhaustive search is also acceptable because the distance calculation cost is cheap now. 日卡三4元，互Q0 Li (http://cs.nju.edu.cn/lwj) Learning to Hash CS.NJU 10/50Introduction Problem Definition Fast Query Speed By using hashing scheme, we can achieve constant or sub-linear search time complexity. Exhaustive search is also acceptable because the distance calculation cost is cheap now. Li (http://cs.nju.edu.cn/lwj) Learning to Hash CS, NJU 10 / 50