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 […]

Finnish POS tagging part 2

Previously I wrote about Building a Finnish POS tagger. This post is to elaborate a bit on training with OpenNLP, which I skimmed last time, put the code for it out, and do some additional tests on it. I am again using the Finnish Treebank to get 4.4M pre-tagged sentences to train on. Start with […]

Topicmodels, topicmodels, …

I have previously done some topic modelling using LDA (Latent Dirilech Allocation). Back then I used a nice video from some nice guy but somehow could not find the video with search engines anymore. Too bad. Implemented LDA in Java back then based on that tutorial. I learned how it works, not why it works. […]

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 […]

Playing with Ruuvitags and Raspberries

I finally received my Ruuvitag sensors from the Kickstarter campaign a few weeks back. Everyone else seemed to get theirs months before (boohoo) but finally they did arrive. So now that I had them, what could I do with them? After a few weeks of finishing Lennu Run, I had the time to try them. […]

Collecting java.util.logging to log4j2

Everybody wants to write a log. And in Java everybody wants to write their own logging framework or at least use of the many different ones. Then someone comes up with logging framework framework such as SLF4J. OK but what was I about to say. As so many times, I had a piece of Java […]

Building a (Finnish) Part of Speech Tagger

I wanted to try a part of speech tagger (POS) to see if it could help me with some of the natural language processing (NLP) problems I had. This was in Finnish, although other languages would be nice to have supported for the future. So off I went, (naively) hoping that there would be some […]