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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.还是家里舒服。211. X.X.4隆福戏院，天婴女扮男妆代师傅九岁红登台救场，却不想一炮而红，成了名角儿，也让洪帮二当家罗浮生和许家公子许星程一见倾心，各施所长展开追求。富家子弟学津（刘德华 饰）自命不凡，多次恋爱后均迅速对对方无感觉，经常在订婚分手。这次，学津看上了来自上海的女服务生文青（瞿颖 饰），文青大方得体，和学津以及他的家人朋友都很聊得来。于是，学津准备与文青一起乘豪华邮轮作远洋旅游，并在船上举行盛大的订婚仪式。Female employees line up to kiss their bosses every day.