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其實代碼不難實現,只是有很多新論文中的奇怪操作都難以入手,熟記好每個部分的小部件
Try loading datasets
Abalone from the UCI Machine Learning Repository and inspect their properties. What fraction of them has missing values? What fraction of the variables is numerical, categorical, or text?

Try indexing and selecting data columns by name
rather than by column number. The pandas documentation on indexing has further details on how to do this.
转换为张量格式
矩阵
矩阵-矩阵乘法
The term matrix--matrix multiplication is often simplified to matrix multiplication, and should not be confused with the Hadamard product.
把A改成行向量,B也差不多(其實就是合併成一個向量a1到ak)
範數norm
範數不為負數、可以縮放、就不一一說明了,反正一個代碼解決的事
範數,它表示为向量元素的绝对值之和
范数是更一般的范数特例,多幾個向量,再取
Frobenius范数(Frobenius norm)是矩阵元素平方和的平方根:
Training using Pytorch,用python暴力解決以下問題
Prove that the transpose of the transpose of a matrix is the matrix itself: . 1. Given two matrices and , show that sum and transposition commute: .
Given any square matrix , is always symmetric? Can you prove the result by using only the results of the previous two exercises?
We defined the tensor X
of shape (2, 3, 4) in this section. What is the output of len(X)
? Write your answer without implementing any code, then check your answer using code.
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- Author:tom-ci
- URL:https://www.tomciheng.com//article/d2lv-guide-1
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