I am a computer scientist, educator, and a former start-up CPO. (Speechly got acquired by Roblox in September 2023.)
Currently I am on sabbatical. Occasionally I teach and do a bit of research. I am also a Docent (of data science) at the Department of Computer Science, University of Helsinki.
I have given some public talks about AI that are available online. They're a bit old, but I think most of the content is still valid.
"Kuinka meitä huijataan netissä tekoälyn avulla?" (in Finnish), 4.12.2019 at Tiedekulma in Helsinki.
What is AI and will it take our jobs away?, 17.11.2026 at Oxford Internet Institute in Oxford, England.
Here you can find reference implementations of some algorithms I've worked on, and datasets used in some of my papers.
Triplet data that we collected for the experiments in (Heikinheimo & Ukkonen, HCOMP 2013) is available here. Please see the README file for instructions. If you use this in your research, I am kindly asking you to cite our HCOMP 2013 paper.
Spectra is an algorithm for quickly estimating the "pattern frequency spectrum" of a binary dataset. This is a curve that shows the number of frequent itemsets for a given support threshold.
Fast-Skyline is an algorithm for computing approximate “skylines” (non-dominated sets) of subsets of size-k subject to two functions, one linear, one submodular. That is, the algorithm computes the set of non-dominated subsets of size-k. This problem has applications in e.g. viral marketing.