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The JSON text format is syntactically the same as the code that creates JavaScript objects.杨长帆也同样头很晕，但时间有限，他要掌握好节奏。CAD shortcut key refers to the use of shortcut key instead of mouse in CAD software operation for the convenience of users. You can use keyboard shortcuts to issue commands to complete operations such as drawing, modifying and saving. These command keys are CAD shortcuts.　　凯丽早已对阿羿拼命工作，无暇顾及家庭产生不满。一日又因凯丽与前男友道别时被阿羿看到，两人误会加深。可惜阿羿此时需进营集训，更使凯丽对两人的感情感到心灰意冷，遂决定从阿羿的住所中搬出。宣布完，现场先是静了那么一刻，然后轰然炸开，娃儿们激动地跳脚大嚷。只有最终的结果确定下来，是生是死才能够有个定论。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.