Do you know the situation where you want to test a little change of a pre-tested code “on the fly” and recognize that it does not work any more? I had this situation several times. Therefore, I decided to create a “flood style” blog post where I want to summarize those moments. This “flood type” … read more …
For a project I was involved in at short notice, I had to become familiar with the Kotlin programming language. Before starting to code, I wanted to get familiar with the syntax and the language itself. As writing on a paper is the best way to learn (for me), I created the following Kotlin Cheat sheet. Enjoy! This Kotlin Cheat Sheet claims not to be complete, nor up to date. It represents my notes during the project in 2019. Since then, the programming language evolved and the Kotlin Cheat Sheet … read more …
Didapptic.com is a research based web application that measures Android and iOS Apps from a didactic point of view. Actually, we work on a new release in order to provide a fresh layout and smarter handling of app data. Among other things, the new release introduces also a new user management handling which allows and/or permits … read more …
I was working on PHPAlgorithms (again). When trying to implement Graphs (Directed and Undirected), I found out that a node could not be found in the graph although I was sure it was there. After a lot of debugging and reverse engineering, I found out that it is related to how PHP is Comparing Objects: … read more …
Frankfurt, May 2018 – Today, the first BETA version of PHPAlgorithms is launched! The repository is available via GitHub and Packagist. Originally launched as a research project, PHPAlgorithms provides currently a basic set of data structures. The repository has been designed to provide simple usage of common data structures such as lists, maps and trees. … read more …
This is a great day. Over the last approximately 7 months I have worked hard on my Master’s Thesis in Recommendation Systems. The goal was to contribute to the community by creating an open source app for an open source platform. And thus, I started to work on a Recommender App at the company behind … read more …
A few days ago I have started working on a PHP library for algorithms and data structures. PHPAlgorithms is still in progress and thus has a early beta status. But today, I have pushed the first data structure which is nearly full done: PHP HashMap Implementation. A HashMap is characterized among others by its key-value … read more …
For my masters thesis I have researched Content-Based Recommendation and extracting keywords – namely: TF-IDF keyword extraction – as a part of it in detail. One interesting point regarding to keyword extraction is the “quality” of keywords, meaning that if a keyword is descriptive for a document or not. TF-IDF Definition For TF-IDF keyword extraction … read more …