Neural Networks and Deep Learning -- Class 2: Neural Network Basics
【課堂筆記】 2.1 二分分類 構建神經網絡的技巧 構建過程 ：正向+反向；logistic迴歸 樣本 （x,y） 訓練輸入矩陣X nx行，m列 列向量堆疊 nx*m X.shape 訓練輸出矩陣Y 1*m 圖片對應於3個矩陣(rgb),將其轉換爲特徵向量 nx=12288 2.2 logistic迴歸 適用於二元分類問題 將b,w看成獨立的參數會更好 2.3 logistics迴歸損失函數 co
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相關文章
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