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System.out.println ("this is the first sub! ");This article is the fourth and last in a series on how to use artificial intelligence to build a robust anti-abuse protection system. The first article explains why AI is the key to building a robust protection system, which is used to meet user expectations and increasing complex attacks. After introducing the natural process of building and starting an AI-based defense system, the second blog post covers the challenges related to training classifiers. The third article discusses the main difficulties in using classifiers to prevent attacks in production.故事发生在东北小城松江市。一群来自全国各地的农民工，怀惴着形形色色的梦想，聚拢在“香榭丽舍”公寓的建筑工地上。他们深知，自己用汗水筑就的终究是城里人明天的梦榻，不求别的只要不拖欠工资就谢天谢地。在简陋的工棚里，上百名年龄、性格不等的民工挤在一起，质问工长谢老大（马少骅 饰），拖欠的工资啥时侯发，好多人指着这点钱送孩子上学、为老人看病。谢老大的回答令人失望愤怒，绝望的民工们砸开了工地负责人张彪（胡晓光 饰）的办公室，谁知他早已逃之夭夭。面对血汗钱被他人挪用，民工们被迫集体追讨，可是等待他们的却是无耻的威胁和恫吓，这时候，谁能帮帮这群无助的民工......Due to the overflow of attacks, it is very reasonable for the king to be partial to the king of life. The kite movement speed is the key point, and the life bonus king is on the rise.· ·Public void del (Observer observer);