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编译程序的逻辑结构 编译程序逻辑结构上至少包含两大阶段 分析（Analysis）阶段 理解源程序，挖掘源程序的语义 综合（Synthesis）阶段 生成与源程序语义上等价的目标程序 编译程序的前端、中端和后端 前端（Front End） 实现主要的分析任务 通常以第一次生成中间代码为标志 后端（Ba 阅读全文
posted @ 2021-12-16 19:27
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Lecture8 Neural NetWork：Representation Non-linear hypotheses Neural NetWork \(a_i^{(j)}\) = "activation" of unit i in layer j \(\Theta^{(j)}\) = matri 阅读全文
posted @ 2021-12-16 15:15
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Lecture7 Regularization Overfitting : If we have too many features,the learned hypothesis may fit the training set very well,but fail to generalize to 阅读全文
posted @ 2021-12-16 15:14
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Lecture9 Neural Networks:Learning Cost function Neural Network (Classifification) \(L\) = total no. of layer in network \(S_l\) = no. of units (not co 阅读全文
posted @ 2021-12-16 15:12
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Lecture12 Support Vector Machines Alternative view of logistic regression support vector machine: \[ \underset{\theta}{min}C\sum^m_{i=1}[y^{(i)}cost_1 阅读全文
posted @ 2021-12-16 15:11
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