Recently I got interested in blockchains, and how do they work in practice. Found a nice tutorial called Naivecoin: a tutorial for building a cryptocurrency. There is also a nice book on the topic called Mastering Bitcoin: Programming the Open Blockchain. Had to get that too, didn’t I. So to get a better understanding of […]

Trying to learn ECDSA and GoLang

Recently I have been looking at the Naivecoin tutorial, and trying to implement it in Go to get an idea of how blockchains really work, and to learn some more Go as well. The tutorial code is in Javascript, and translating it to Go has been mostly straightforward. However, porting the third part with transactions […]

Playing with Pairwise Testing and PICT

A while back, I was doing some lectures on advanced software testing technologies. One topic was combinatorial testing. Looking at the materials, there are good and free tools out there to generate tests to cover various combinations. Still, I don’t see many people use them, and the materials out there don’t seem too great. Combinatorial […]

Finnish Topic Modelling

Previously I wrote about a few experiments I ran with topic-modelling. I briefly glossed over having some results for a set of Finnish text as an example of a smaller dataset. This is a bit deeper look into that.. I use two datasets, the Finnish wikipedia dump, and the city of Oulu board minutes. Same […]

Word2Vec with some Finnish NLP

To get a better view of the popular Word2Vec algorithm and its applications in different contexts, I ran experiments on Finnish language and Word2vec. Let’s see. I used two datasets. First one is the traditional Wikipedia dump. I got the Wikipedia dump for the Finnish version from October 20th. Because I ran the first experiments […]

Giving Go a Go by forwarding some TCP

Problem? Needed to forward some TCP connections to two different locations (one stream to two destinations). Had trying out Golang on my todolist for a while. So decided to give it a Go. Previously, I have implemented a similar TCP forwarding tool in Java. Installing the full JVM to run some simple TCP forwarding seemed […]

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Understanding Golang Project Structure

AWS EC2 / RDS Pricing and Performance

Robot Framework by Examples

My Pandas Cheat Sheet

Porting Naivecoin tutorial to Golang (first parts)