Table of Content Lecture 1: How to Start a Startup by Sam Altman Lecture 2: Ideas, Products, Teams and Execution Part II by Sam Altman Lecture 3: Counterintuitive Parts of Startups, and How to Have Ideas by Paul Graham Lecture 4: Building Product, Talking to Users, and Growing by Adora Cheung Lecture 5: Business Strategy and Monopoly Theory … Continue reading Startup Lectures

Great leaders, be it a political leader or business leader, are also philosophers. They summarize into theories and apply the theories into concrete strategies. According to Xing Wang, the CEO, and founder of Pingduoduo, Meituan in China, there are a couple of things CEO should do: 第一，过去的长期经验不是最重要的，快速学习能力是决定一个人发展现状以及未来前景的重要因素。 第二，尊重企业精神，尊重大家共同定好的游戏规则。 第三，CEO不可被人代劳的职责是： 设计公司整体愿景和所有战略，确保传达给所有利益相关方，不仅是管理层，包括所有员工，不仅是公司内部人，包括股东、消费者、商户和合作伙伴； 招到并留住最优秀的人； 确保公司之中要有足够的资金。

David Einhorn has been embroiled in languid performance in the last five years, reaching a climax recently by shorting Tesla. However, his good days might be coming soon. Different than some infamous investors such as SAC Capital founder Steven Cohen, David Einhorn constructs his positions, especially substantial shorting positions,  purely based on his thorough due … Continue reading Fundamental Approach Taken by David Einhorn

Learn_Physics_in_2_Months This is the curriculum for "Learn Physics in 2 Months" by Siraj Raval on Youtube. This video. Why Learn Physics? It's fundamentally helped us build modern civilization.It's used in Quantum ComputingIt's used in Computer EngineeringIt's used for innovation in general (thinking in first principles) Month 1 Week 1 Math Review Linear Algebra Study Guide https://www.souravsengupta.com/cds2016/lectures/Savov_Notes.pdfPlaylist https://www.youtube.com/watch?v=kjBOesZCoqc&index=1&list=PLZHQObOWTQDPD3MizzM2xVFitgF8hE_ab Calculus Study … Continue reading Learn_Physics_in_2_Months (https://github.com/llSourcell/Learn_Physics_in_2_Months)

This is a pragmatic useful book on python, authored by David Kopec, the topics touched on through the problems are listed below, and the source code is on github: https://github.com/davecom/ClassicComputerScienceProblemsInPython Essential TechniquesRecursionMemorizationBit ManipulationDynamic ProgrammingPermutation GenerationSearch AlgorithmsBinary SearchBreadth-First SearchDepth-First SearchA*Constraint Satisfaction ProblemsSolving Graph ProblemsRepresenting Graphs using Hybrid Adjacency ListsSearch in GraphsFinding shortest paths with Dijkstra's AlgorithmFinding … Continue reading Classic Computer Science Problems in Python

Founders of "Weights & Biases" Lukas and Chris are super successful already. The former company they created - Figure Eight provides a platform for people to label training data was sold to an Australian company for $300 million. Now they embarked on new adventure of this Weights & Biases, dedicated to educational Machine Learning. To … Continue reading Machine Learning Hands-on Learning By “Weights & Biases”

I believe the best way to learn is to do it multiple times with multiple scenarios. Other than the official tutorial program provided by Djangoproject.com, a book written by William S. Vincent is very useful too. The tile is Django for Beginners Learn web development with Django 2.0, and here is the free link. Following … Continue reading Django Step by Step in Windows_Intricacies

The concept of Neural Network can be illustrated by the MNIST number recognizing data set. Each letter can be broken up into 28X28 pixels, with each cell given a value indicating its brightness, then the whole 28X28 pixel elements are flatten to one line/row = 28*28 = 784 cells. For each cell, a random value … Continue reading Back Propagation Calculus in Neural Network

Fourier Transform is highly regarded for its impact in advancing modern technology, while its format nevertheless looks quite similar to Laplace Transform. Let's take a look: Recall from the last blog, I re-pasted the Laplace Transform below: Laplace transform, from my view, seems to help solve abstract DE as a powerful tool, while Fourier Transform … Continue reading Fourier Transform

When I was in middle school, I was always puzzled why those mathematicians would invent complex, irrational number, negative number on top of positive number. Why bother and make the route to grasp math more difficult? I took some research on Euler equation, the famously most elegant one I am amazed by and greatly interested … Continue reading From Taylor Series to Euler Equation