Big Data Memo

天行健，君子以自强不息；地势坤，君子以厚德载物。

Matrix operations and inverses

Matrix Multiplication There are 5 common multiply mmethods 1 just the define `A = matrix([ [ ], [ ] [a31 a32 a33]])` `B = matrix([ ...

Posted by Big Data Memo on July 21, 2016

Lev1_Portfolio_basic_concept

49 Asset Allocation Decision [★] 1 Portfolio Management的四步过程 2 什么是Capital Preservation目标 3 什么是Capital Appreciation目标 4 什么是Current Income目标 5 什么是Total Return目标 50 Portfolio Management ...

Posted by Big Data Memo on July 21, 2016

sublime keyboard shortcuts

快捷键功能 ctrl+shift+n 打开新Sublime ctrl+shift+w 关闭Sublime，关闭所有打开文件 ctrl+shift+t 重新打开最近关闭文件 ctrl+n ...

Posted by Big Data Memo on July 20, 2016

hackerrank_numpy_test

Ipython Notebook convert to blog 借助于 Ipython Notebook Viewer 提供的服务，只需下面一行代码，即可在博客中嵌入显示 Notebook： That’s all. For more please refer to Hackerrank machine learning

Posted by Big Data Memo on July 20, 2016

Lev1_Corporate_Finance_basic_concept

44 Capital Budgeting 1 Capital Budgeting的几个基本原则 2 什么是沉没成本（Sunk Cost） 3 什么是外部性（Externalities） 4 什么是同型装配（Cannibalization），以及它对现金流的影响 5 Conventional Cash Flow Pattern与Unconventional Cash Fl...

Posted by Big Data Memo on July 20, 2016

dialogue about start up a business

profile: $ "A and B are goint to start their business right now, but they don't know how to do it well." $ "C is a consultant on business startup." $ "D is an investor who will invest A and B's co...

Posted by Big Data Memo on July 19, 2016

hackerrank_numpy

Arrays A NumPy array is a grid of values. They are similar to lists, except that every element of an array must be the same type. `import numpy a = numpy.array([1, 2, 3, 4, 5]) b = numpy.array([1...

Posted by Big Data Memo on July 19, 2016

Lev1_FSA_basic_concept

29 Financial Statement Analysis: Introduction 1 审计的三种结果的含义：Unqualified，Qualified，Adversed Opinion的分别的含义 2 MD&A（Management’s Discussion and Analysis）记录的内容是什么：一些Disclosure，Discussion 3 Foo...

Posted by Big Data Memo on July 19, 2016

Ml_fourier_transform

了解傅立叶转换（Fourier transform）频谱分析(spectral analysis)

Posted by Big Data Memo on July 18, 2016

Lev1_Economics_basic_concept

13 Introduction 1 Price Elasticity of Demand的定义 2 影响Price Elasticity of Demand的三个方面 3 Elastic，Inelastic，Perfectly Elastic和Perfectly Inelastic的图形表示 4 Cross Elasticity of Demand的定义 5 Incom...

Posted by Big Data Memo on July 18, 2016