Introduction Our Contribution 。Learning to hash(哈希学习)：memory/disk/cpu/communication 。Distributed learning(分布式学习)memory/disk/cpu; but increase communication cost ●Stochastic learning(随机学习)：memory/disk/cpu 日卡三4元，互Q0 Li (http://cs.nju.edu.cn/lvj) Big Learning CS.NJU 8/115Introduction Our Contribution Learning to hash (MFÆS): memory/disk/cpu/communication Distributed learning (©Ÿ™ÆS): memory/disk/cpu; but increase communication cost Stochastic learning (ëÅÆS): memory/disk/cpu Li (http://cs.nju.edu.cn/lwj) Big Learning CS, NJU 8 / 115