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Two Sum I Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input wou 阅读全文
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这一系列求最优值的问题变种挺多 1. Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at m 阅读全文
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Loss function = Loss term(误差项) + Regularization term(正则项),我们先来研究误差项;首先,所谓误差项,当然是误差的越少越好,由于不存在负误差,所以为0是极限,而误差得越多当然也越不好 1. Gold function,理想中的效果 正样本,损失为0 阅读全文