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The newly trained classifier is compared with the previous classifier to estimate how much change has taken place. For example, you can perform a dark launch and compare two outputs over the same traffic. Alternatives include A/B testing and backtracking testing for a small portion of traffic.It is five kilometers around the burning point and involves many residential areas, covering almost the entire riverside area and the southwest of Xiaoshan.Attack features include:In real life, China's income tax is divided into enterprise income tax, foreign-invested enterprises or foreign-invested enterprises income tax and personal income tax. For these three types of income tax, each is calculated in a different way. Personal income tax has a personal income tax calculation method, while enterprise income tax has its corresponding calculation method. If we do not adopt the policy mode to realize such a requirement, we will define an income tax class, which has an attribute to identify the type of income tax and a CalculateTax () method to calculate the tax. In this method, we need to judge the tax type and calculate the income tax for different tax types through if-else statements. Such an implementation can indeed solve this scenario, but such a design is not conducive to expansion. If the system needs to add an income tax in the later period, it has to go back and modify the CalculateTax method to add an additional judgment statement, which clearly violates the principle of "open-closed". At this time, we can consider using the strategic mode to solve this problem. Since the tax method is the changing part of this scenario, we can naturally think of abstracting the tax method at this time, which is also the essence of the implementation of the strategic mode.红椒无法。棠微微从未正视过林燃的存在，她以为他们不过是一起长大的冤家姐弟，直到告白成真，一切甜蜜突如其来。林燃这个甜品过敏的邻家弟弟，成为了棠微微生命中最难以克服的难题……她无糖不欢，他对糖过敏，看热血小竹马如何设下诱爱陷阱，步步为营，拥人间小糖精姐姐入怀。电视剧《我在北京·挺好的》以上世纪八十年代到二十一世纪的现代都市为历史背景，跨越三十多年的风雨历程。以来自不同背景、性格迥异的于小芳、徐晓园这对亲姐妹各自不同的奋斗人生历程为主线。在事业与情感的层层纠葛中真实且细腻的展开了一副现代都市众生相。该剧讲述了本是亲姐妹，却在阴差阳错中被天各一方的由王茜华饰演的农村姑娘于小芳与由陶昕然饰演的北京女孩徐晓园在三十多年的风雨人生历程中，起伏不停的命运推动下成长与蜕变，最终战胜自我赢得成功与尊严的励志故事。