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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.程小明走向前，拍了拍周星河。从小修习古典钢琴的顾阳考上了茱莉亚音乐学院，却因一夕之间家中破产没能入学。但为了保住自己的音乐梦想，也为了让焦头烂额的母亲放心，顾阳选择进入一家经纪公司做练习生，只懂古典不懂流行音乐的他只能进入“备选组”。在这里，顾阳结识了会跳舞的赵振南和会唱歌的宋星皓，在二人的帮助下，顾阳后发先至，在公司内部竞争中披荆斩棘，跻身“出道组”，而这里还有他曾经的“小跟班”林辰，可是，此刻的林辰已经将顾阳视作自己必须超越的对手。获得参加歌舞竞技类节目的机会之后，不甘居于顾阳之下的林辰竟然在比赛前夕投奔对手公司，给顾阳的队伍带来致命打击，但顾阳带领留下来的兄弟们顶住在巨大的压力，爆发出惊人创作力，在节目中表现十分惊艳，凭实力顺利出道，踏上了音乐梦想的新征途。该剧讲述的是叶可与高中闺蜜纪之夏阔别多年后重逢，叶可正为了成为优秀的摩托车女赛车手而努力，与此同时，纪之夏也即将与未婚夫钟远展开新生活。之后，纪之夏因遭受钟远的家暴与纠缠离家出走，被叶可、唐晓、萧然等众人收留，从而展开一系列真实而灵动的故事。在学校不要委屈自己，有什么事找我就行了。想起曹参临走时的谆谆告诫，可惜自己根本没有在意，只是吩咐一句，并未人身落实督促。