原创 學習React(19) - 組件生命週期方法 (Component lifecycle methods)
React給我們提供了建立的方法，我們就可以用這些方法來override 在一些特殊的stages。這些方法不能在函數模塊中使用。將這些方法分爲四種類別。 Mounting: When an instance of a com
2020-07-08 11:21:13
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原创 學習React(22) - 介紹Pure components
今天，就介紹一下pure components, 博主也不知道怎麼翻譯成中文才正確，就先用英文吧！ 這個得創建三個文件： 第一個文件 // PureComponent.js 文件 import React, { PureCompo
2020-07-08 11:21:13
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原创 Java 習題（2）
題目： 將DataOnly 代碼段改寫成一個程序，然後編譯，運行。 解答： 先提供DataOnly代碼段： class DataOnly { int i; double d; boolean b; } 題
2020-07-08 11:21:13
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原创 Discrete Distribution
Bernoulli distribution: any event where we only have one trial and two possible outcomes follows such a distributi
2020-06-21 17:36:30
原创 Necessary Programming Languages and Software Used in Data Science
Programming language enables you to devise programs that can execute specific operations. Moreover you can reuse t
2020-06-21 17:36:30
原创 Machine Learning (ML) Techniques
What situation is it preferable to make predictions using machine learning rather than traditional statistical meth
2020-06-21 16:56:45
原创 Statistics -- Inferential Statistics Fundamentals
Inferential Statistics refers to methods that rely on probability theory and distributions in particular to predic
2020-06-21 16:56:45
原创 Vim 指令的總結
Movements w next word W next white space delimited word b previous word B previous space delimited word
2020-06-21 16:56:45
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原创 用github來弄合作項目
這個學期，老師要求弄一個學期項目，博主我就和一位同學來搞一個前端網頁。之前都知道是用github來保存項目代碼，只是沒有在github進行合作來做項目的經歷。剛開始弄得時候，就有點很棘手，慢慢就知道如何來弄了。現在，博主就將一些常
2020-06-21 16:56:45
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原创 Probability -- 01
Additive law: The probability of the union of two sets is equal to the sum of the individual probabilities of each
2020-06-21 16:56:45
原创 矩陣相乘的維度
一個矩陣是將數字排成行和列的矩形排列。矩陣中的每一個數字都被稱爲矩陣元素或元素。 A=[123456789] A = \begin{bmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \\ 7 &
2020-06-21 16:56:45
原创 介紹identity matrices
定義什麼叫做identity matrices: The n x n identity matrix, denoted InI_nIn, is a matrix with n rows and n columns. 矩陣裏面的元
2020-06-21 16:56:45
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原创 GDB 操作手冊
Getting Started If you have never run GDB before, you can start it up with the following command: \gdb < program >
2020-06-21 16:56:45
原创 用Python 來做Cluster Analysis
""" 1. Cluster analysis is a multivariate statistical technique that groups observations on the basis some of thei
2020-06-21 16:56:45
原创 The Basic probability Formula
Probability is the chance of something happening. A more academic definition for this would be likelihood of an ev
2020-06-21 16:56:45