Implementing a Principal Component Analysis (PCA)
In this article I want to explain how a Principal Component Analysis (PCA) works by implementing it in Python step by step. At the end we will compare the…
Machine Learning, python, statistics
python
python
Installing Scientific Packages for Python3 on MacOS 10.9 Mavericks
I just went through some pain (again) when I wanted to install some of Python’s scientific libraries on my second Mac. I summarized the setup and…
python, SQLite
A thorough guide to SQLite database operations in Python
After I wrote the initial teaser article “SQLite – Working with large data sets in Python effectively” about how awesome SQLite databases are via sqlite3 in…
python, Testing
Unit testing in Python
Let’s be honest, code testing is everything but a joyful task. However, a good unit testing framework makes this process as smooth as possible. Eventually…
python
A short tutorial for decent heat maps in R
I received many questions from people who want to quickly visualize their data via heat maps – ideally as quickly as possible. This is the major issue of…