Posts

Read about PHP, Machine Learning, Symfony and good software craftsmanship practices. One new post every week.

Text data classification with BBC news article dataset

The goal of this post is to explore some of the basic techniques that allow working with text data in a machine learning world. I will show how to analyze a collection of text documents that belong to different categories.

Read more

Clustering Chicago robberies locations with k-means algorithm

Using the real dataset of crimes committed in Chicago, I will divide the robbery locations into a bunch of different clusters. Then I will try to visualize results and answer the question of whether we have chosen well parameters for our algorithm.

Read more

Binary heap implementation in PHP

Short explanation what is binary heap and how to implement it in pure PHP from scratch. I will show you how to compare it with native solution (SPL). Performance results are surprising.

Read more

When the expert becomes a leader

Very often in the life of an expert there is a moment when he wants (or it must) to become a leader. These are two different roles that are very difficult to reconcile with each other. In this post I will present some useful techniques that can help experts become a good leader.

Read more

Write your own simple chess AI in PHP

A brief history of how to start writing your own chess engine in PHP. You will learn some basic algorithms, prepare a solid foundation allowing for further development and finally I will consider how you can push your AI further.

Read more

Design Patterns - Strategy

One of the main assumptions of good project programming is the 'Open/closed' principle, which says that classes should be closed for modification, but open to extension. The strategy pattern allows you to easily maintain this standard in your code.

Read more