Probably we all heard the famous saying by Charlie Munger, 'to the man with only a hammer, every problem looks like a nail." As to Xiaolai Li, "真正掌握了那个技能之后，那个技能才会“变”成刚需。并且，一旦掌握了某项技能，它只能是刚需。", translated into English via Google translate: "After mastering that skill, that skill will "change" into "indispensable". And once you master a skill, it can only be "indispensable." … Continue reading Thoughts On Learning Math, Physics, Programming, Drawing, Film-making On And On …

Basic notions of life is like a compass, we need to possess a compass to traverses through life with fulfillment and happiness. Without a compass, we can easily fall into traps causing unnecessary trouble and agony. The following notions summarized by Wu Bofan is astronomically helpful: holistic view - don't counting on subjective will power … Continue reading Basic Notions – Framework to Approach Any Problems in Life

I will use Python Django to create a website so the users can enter a few stocks they come up with fundamental research, hit a button, and a full-blown csv sheet will be automatically generated with all similar companies of their interest. After setting the python3 environment(refer to the previous blog), and install Django(supplementing the … Continue reading Dynamic Creation of Thematic Indexes – Static Website

It's comprehensive and thorough, posted by professor in both his website and Youtube. C Compilation - a system programmer perspective Working of Linkers - creating your own libraries UNIX make utility GNU autotools and cmake Versioning Systems git Exit Handlers and Resource Limits Stack Behind the Curtain Heap Behind the Curtain Design and Code of … Continue reading System Programming by Prof. Arif Butt

This video posted out by Google is a fabulous 5-hour must-watch, it walks through the following contents: Windows OS list directories.Linux list directories. How to use command line interface How to change and make directories of windows and linux os in command line interfaceWindows and linux command historyCopying file and directoriesDisplay file contents and modifying … Continue reading What Operating System Specialists Know and Python 2 and 3 Toggling

It starts from my needs to have both version 2 and 3 Python run in my machine, as Python2 is set to be retired by the community in 2020, however, lots of the work needs to be maitained at Python2 to ensure a smooth transition. That's why I am looking for a solution, which further … Continue reading Linux Operating System – Contents

Why over-fitting is bad? Because it's over-fitted to the existing data points, but may not necessary the best to predict out-of-sample data, which is actually needed when you develop and figure a linear regression parameters. A great many can be learned from Hammard Shaikhha to in his github post, where he applied regularization to the … Continue reading Regularization to Deal with Over-fitting in Linear Regression

In Math, according to the wiki, vector space is a collection of objects called vectors, which may be added together and multiplied(scaled) together. the objects can be of different kind such as height, blood pressure, weight etc. Matrices are a useful notion to encode linear maps, written as a rectangular array of scalars, for example … Continue reading Vector and Tensor