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Category division is specified through the Coding Matrix. There are many forms of coding matrix, the common ones are binary code and ternary code. The former specifies each class as a positive class and an inverse class respectively, while the latter can specify "disabled class" in addition to the positive and inverse classes. FIG. 3.5 shows a schematic diagram. In FIG. 3.5 (a), classifier f2 takes samples of Cl and C3 as positive examples and samples of C2 and C4 as counterexamples. In FIG. 3.5 (B), classifier f4 takes the samples of C1 and C4 as positive examples and the samples of C3 as counterexamples. In the decoding stage, the prediction results of each classifier are combined to form the code of the test example. The code is compared with the corresponding codes of various types, and the category corresponding to the code with the smallest distance is taken as the prediction result. For example, in Figure 3.5 (a), if based on the European distance, the prediction result will be C3.How to get it: lucky draw or QB purchase.天庭之上，玉帝亲督护天大将军比武。天将傲洪阴招胜雷神，雷神愤怒之下大闹天宫，被玉帝贬下凡间冰封雷泽湖千年。《雪花女神龙》讲述的是江湖女侠上官燕为寻找自己母亲踏上一条前途未卜的凶险历程。十五年前，８岁的上官燕家庭发生惨变，父亲为人所害，母亲下落不明；上官燕幸为武林奇人古天木救走并抚养成人，并传授其绝世剑术雪花神剑。十五年后，上官燕身负神兵“凤血剑”现身江湖，寻……他便催那禁军细细说来。为了使家族资产合法化，麦克通过在梵蒂冈教廷的关系网，准备投资“屹立”集团，却遭到敌人的暗中阻挠，教皇的去世也让事情更加扑朔迷离。