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This is Internal Pointers. It's a place where I collect all the knowledge I'm gathering through my existence. I've found that writing down things in a well-formatted fashion helps me to better fix ideas in my mind. Topics will range between Mathematics, Information Technology, Finance, Psychology and any other scientific subject that tingles my mind. I don't want to teach you anything within these pages, but if you find something useful you are free to share it. All feedback are welcome.

— Triangles, May 2015

articles series

Adventures in stock markets

Everything I wanted to know about public companies, their shares and what one can do with them.

First approach to machine learning

Wandering through the field of study that gives computers the ability to learn without being explicitly programmed. Mainly based on Machine Learning course @ Coursera.

latest articles

How to resize a VirtualBox disk

My VirtualBox guest OSes always run out of space. written on January 06, 2018

Squash commits into one with Git

A nice way to group some changes together, especially before sharing them with others. written on November 17, 2017

The cost function in logistic regression

Preparing the logistic regression algorithm for the actual implementation. written on October 29, 2017

An essential Docker cheat sheet

All the best Docker commands that I keep forgetting. written on October 05, 2017

Compress a PDF file with Ghostscript on Linux

How to reduce the size of a PDF that originated from a scanned document. written on September 16, 2017

Fix missing dual boot menu with Windows 10 and Debian on Acer laptops

Having multiple OSes on a single machine is convenient. It is also great to choose what OS to boot on startup. written on September 12, 2017

Introduction to classification and logistic regression

Get your feet wet with another fundamental machine learning algorithm for binary classification. written on July 17, 2017

How to convert VOB files to mkv with FFmpeg

You have just ripped a movie from a DVD and you want to store it in a compressed format with multi-language audio tracks, subtitles and high quality video. written on July 09, 2017

Introduction to ETFs

Mutual funds version 2.0! written on May 07, 2017

How to optimize the gradient descent algorithm

A collection of practical tips and tricks to improve the gradient descent process and make it easier to understand. written on April 01, 2017

C++ namespaces with private members

A cool alternative to the C way of having static global variables. written on March 18, 2017

Multivariate linear regression

How to upgrade a linear regression algorithm from one to many input variables. written on March 05, 2017

The gradient descent in action

It's time to put together the gradient descent with the cost function, in order to churn out the final algorithm for linear regression. written on February 18, 2017

The gradient descent function

How to find the minimum of a function using an iterative algorithm. written on February 05, 2017

Bonds, a gentle introduction

Digging into an IOU-based investment strategy, where investors lend money to companies and governments and make money through interest payments. written on January 22, 2017