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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.对，韩信。张良沉思片刻，说道：汉王。Melting Range (℃)　　被战争、民运和动乱裹挟、令所有人局促不安的的七十年代的脚步正渐渐靠近，佩琪在这个女性崛起的岁月中会否选择自立门户？唐在面对内心揭开的伤痛、决绝地离开他一手创造的充满甜蜜谎言的虚伪的广告业后，会如何继续自己的人生？这个惊心动魄的时代里，他们的命运究竟将如何画上句点？