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OvO pairs the N classes in pairs to generate N (N-1)/2 binary classification tasks. For example, OvO will train a classifier to distinguish classes Ci and Cj. The classifier takes the Ci class sample in D as a positive example and the Cj class sample as a counterexample. In the testing phase, the new samples will be submitted to all classifiers at the same time, so we will get N (N-1)/2 classification results, and the final results can be generated by voting: that is, the category that is predicted most is taken as the final classification result. Figure 3.4 shows a schematic diagram.贾寨与张寨一直以来相互争强互不相让，抗战时期两寨因日军的侵入团结一致。由于汉奸张兆银事先做好准备，龟田率领的日军轻易入驻两寨。他们建炮楼，搜刮两寨粮食，害死贾文坡及荷花，龟田还要强娶贾文锦新婚妻子张玉仙。贾文锦与张兆喜从国军战场溃败后得知日军作为，无比愤怒但又对国军失望，于是组建了白马团黑马团抗日武装。已在八路军中当上文工团团长的贾文柏奉命回村侦察敌情发展敌后武装。于是贾文柏整合了贾文锦的抗日武装和贾文灿的别动队，他们与维和会长贾文清里应外合打击敌人。在一次重要行动中，贾文清牺牲，张兆喜因贾文灿的叛变而身亡。受贾文柏感染，贾文锦同白马团黑马团成员加入八路军，他们最终端掉炮楼打败日军赢得了胜利。She found an English movie with alphabetic subtitles and covered the letters when watching it over and over again. Try to understand what the characters in the film said. In order to test their understanding, after watching it many times. He is showing the subtitles.杨长帆舒服的更多，跟在戚将军屁股后面，有特七特八护卫，想找死也难啊众人都点头道：这样才对。真正的青春涂鸦再次在这里上演——