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MyEvent +=Print;In order to establish a reliable cross-validation method, you must have a good understanding of the data and the challenges you face. I will also check and ensure that the validation set has a similar distribution to the training set and the test set, and try my best to ensure that the final model improves in both local validation and ranking.The result of Xiao Bian's inquiry at the subway window is that most window staff can correspond to English, so those who cannot speak Japanese can also rest assured. The Japanese staff are very serious and will provide detailed information to tourists who need help. So don't forget to ask the window for help if you have any questions. Someone will come to help.It is said that female journalists with outstanding images are more likely to be named. Although they have not been confirmed by the data, in order to gain the right to interview, female journalists can be said to make full use of all resources and seek one in thousands of miles.小朋友们，一定要记住开启弹珠游戏的咒语哟：“瓢虫瓢虫，打开双翅，轰隆隆隆！”