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-Coding: N categories are divided M times, and one part of the categories is divided into positive classes and the other part is divided into negative classes in each division, thus forming a two-classification training set. In this way, a total of M training sets are generated, and M classifiers can be trained.It mainly refers to the news in the traditional fields of politics, economy, culture and military, and also includes the mobile Internet and O2O, which are subdivided into vertical fields and carry different products. This market is not large enough and the ceiling is relatively low, so many information and news platforms either do not do much or have to continuously expand their borders.3. Repair the database log regeneration. This command checks the allocation, structure, logical integrity and object errors in all databases.行，那我以后就找老丁了。There was a man in his heart, even if they had nothing to do with each other.4. Ctrl + Shift + Click; You can attach the selected material to all surfaces in an object with the same material as where you clicked (note the difference from the second case)