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Use reasonable data sampling: It is necessary to ensure that a small number of entities (including IP or users) cannot account for most of the model training data. In particular, care should be taken not to pay too much attention to false positives and false negatives reported by users. This may be achieved by limiting the number of examples that each user can contribute or using attenuation weights based on the number of reported examples.《兰桐花开》是由孙滔执导，闫学晶、吴京安、何翯、雷恪生领衔主演的农村剧。该剧由12个独立的故事结构而成，每个故事都以一位进城打工的农民工为主线，描写他们的喜怒哀乐、爱恨情仇，真实展现他们背井离乡在城市生存的孤苦无奈：进城做保姆的农村妇女深陷婚姻牢笼的悲惨境遇；顶着风险辛苦帮人开黑车却被拖欠薪水的农民司机；处处想帮人解决问题却招致祸端的小区保安；进城打工妻子却遭遇性骚扰的夫妇。悲剧故事的背后，是这些城市边缘人被忽略的自尊，被轻视的命运和他们对融入城市的热切渴望。本片取材自真人真事。在上世纪30年代，有一个名叫马文·托尔森（丹泽尔·华盛顿饰演）的美国黑人在语言修辞上有着很深的造诣，尤其擅长写诗和辩论。事实上他后来也被认为是那个时代最伟大的诗人之一。当时，他在一所德州的黑人高校中担任教授。Let's look at another example of broadcasting. A program has 5 characters. After receiving the broadcasting message, it uses the stamp to draw the shape flower pattern.Let's go on to discuss design patterns. In the previous article, I finished five creative patterns. At the beginning of this chapter, I will talk about the following seven structural patterns: adapter pattern, decoration pattern, agent pattern, appearance pattern, bridging pattern, combination pattern and meta-sharing pattern. The adapter pattern of the object is the origin of various patterns. Let's look at the following figure: