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Numpy&Pandas 006: Copy

Posted on 2020-04-07
We said a simple array, 1234import numpy as npa = np.arange((4))#array([0, 1, 2, 3]) CopyNormally, we set b is equal to a and c is equal to b. 12345b ...
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Numpy&Pandas 005: Split

Posted on 2020-03-24
Let’s continue to see something for array — split. As usual, make a array first. 12345A = np.arange(12).reshape((3,4))#array([[ 0, 1, 2, 3],# ...
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Numpy&Pandas 004: Combination

Posted on 2020-03-22
We have done some basic operations on a array, now, let’s see the combination of two arrays. Firstly, as usual, make two arrays 12A = np.array([1,1,1] ...
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Numpy&Pandas 003: Index

Posted on 2020-03-22
We make two new arrays firstly, 123456A = np.arange(0,6)# array([0, 1, 2, 3, 4, 5])B = A.reshape((2,3))#array([[0, 1, 2],# [3, 4, 5]]) One-di ...
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Numpy&Pandas 002: Basic Operation in NumPy

Posted on 2020-03-13
We make two arrays first. 123456789a = np.array([[2,2,2],[3,3,3],[4,4,4]])b = np.ones((3,3))#array([[2, 2, 2],# [3, 3, 3],# [4, 4, 4]])#ar ...
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Numpy&Pandas 001: Attributes and Array in NumPy

Posted on 2020-03-13
At first, import the numpy. Normally, we will import it as np for calling it easily. 1import numpy as np AttributesUsing a method called array to t ...
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Numpy&Pandas 000: Introduction and Installation

Posted on 2020-03-12
IntroductionThere are two important parts in computation nowadays. They analysis data via matrix, so they are used popularly in Data Analysis, Machine ...
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C++: file reading and writing

Posted on 2020-03-12
Firstly, everything you do before, do not forget to import “<fstream>”. 1include <fstream> Three common operations in “<fstream>” ...
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CV004: Convolution

Posted on 2020-02-05
IntroductionIt is different from math. But, it is similar. There is 1-dim convolution, 2-dim convolution, 3-dim convolution and 4-dim convolution. And ...
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CV003: Image Transform

Posted on 2020-01-27
Here, I would like to introduce a basic operation of CV, transform. It is a very import part, which is Similarity Transform, Affine Transform and Pers ...
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Cagy Jiao

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