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Information Theory: I forget which publishing house it was. It is a very thin book and it is very good. There is a good talk about the measurement of information, the understanding of entropy and the Markov process (there is no such thing in the company now, I'll go back and find it and make it up). Mastering this knowledge, it is good for you to understand the cross entropy and relative entropy, which look similar but easy to confuse. At least you know why many machine learning algorithms like to use cross entropy as cost function ~公元204年，曹操为率领曹丕、曹彰、曹植三子，和大将许褚众人攻打邺城。袁绍兵败，曹操进殿，权臣为献殷勤，逼迫甄宓献舞。不料曹丕对甄宓一见倾心，曹操颜面有损，一怒之下，将曹丕派驻南皮。甄宓知道袁家已败，又恐入曹操之手，上吊保洁被曹植救下。曹植见甄宓楚楚可怜，俩人日久生情。曹丕立功回邺城，曹操论功行赏，曹丕势必入甄宓为妻。甄宓为助曹植，以曹丕放弃与曹植世子之夺为交换条件，答应嫁给曹丕。曹植不明缘由，伤心不已。曹丕在郭笑等权臣献计下违背信约，再夺世子之位，终得继承魏王之位，篡汉称帝。曹丕三次封甄宓为后，甄宓不从。曹丕怒封郭笑得为后。郭笑得权后，假传圣旨刺死甄宓。甄宓死后，曹植伤心不已。面对曹丕的自相残杀，曹植留下七步诗，归隐洛水哦？承蒙许小姐高看了。越王尹旭启程返回都城山阴。讲述了魔法学院院长长期潜伏在魔法学院里，掩盖了自己是大巫神的奴仆身份，为了复活大巫神，不惜借用江兰心的弟弟兰诺的肉身，暗中使用魔法杀害魔法学院的学生来完成自己的使命，江兰心在解救弟弟兰诺的过程中频频遇挫，当这个阴谋被揭穿后，其追求者路小布及学妹倾尽一切加入解救兰诺的计划中，一同跟院长斗智斗法。这部电影讲述的是一个男孩和他的家人搬进小镇边上一家据说闹鬼的旅馆。