## Ch- ch- changes!

I have been neglecting my blog lately as some major changes happened in my life. About three weeks ago I said goodbye to academia and started working at RELEX Solutions, a growing Finnish (& international) software company which offers automatized solutions for managing the supply chain processes. Leaving academia - after about 10 years, studying […]

## A small guide to Random Forest - part 2

This is the second part of a simple and brief guide to the Random Forest algorithm and its implementation in R. If you missed Part I, you can find it here. randomForest in R R has a package called randomForest which contains a randomForest function. If you want to explore in depth this implementation, I […]

## A small guide to Random Forest - part 1

I've recently started playing with Kaggle and got curious about one of the most famous classification/regression framework, Random Forest. In a problem of classification or regression, several random decision trees (a "forest") are built and at the end the outputs are combined ("bagging"). The intuition is that randomness and a meaningful quantity of trees will avoid […]

## Women in Mathematics in Finland: Amal Attouchi

As promised, the series of lectures continues, after the inaugural event hosted by the Department of Mathematics and Statistics of University of Helsinki. This time I'll travel to University of Jyväskylä and the guest speaker will be Amal Attouchi, local postdoctoral researcher. Amal graduated in 2014 at Université Paris XIII, with a thesis on PDEs titled […]

## The man who knew infinity: a movie about Ramanujan

Thank you Youtube suggestions! Today I came across this trailer of an upcoming movie, "The man who knew infinity". The movie depicts the story of one of the finest minds of last century and one of the greatest mathematicians of all time, Srinivasa Ramanujan. He was what you'd call a true genius, an independent thinker […]

## Open Data: CT datasets and prototypes

In my research work, I often find it difficult to get datasets for X-ray CT for method validation, neither simulated and real data. Of course, there's the classic Shepp-Logan phantom, but in many cases it would save a lot of work to download datasets to test one's methods. As for my knowledge, there is no broad […]

## Science Slam Helsinki 2015: a triumph for Inverse Problems

Last November I attended a fun event here in Helsinki: a sort of mix between science and stand-up comedy called Science Slam Helsinki. A Science Slam is a form of science communication to general audience. Each scientist gives a short talk (10-15 mins) to popularise science. Often such events are held in non-academic places, like pubs. Science […]

## Live from Inverse Days 2015: baby on board

This week I did something a little crazy, dictated by necessity: I took my 2 year old girl to a conference, namely the Inverse Days in Lappeenranta. We drove from Espoo (bad idea) on Monday evening and will stay until Thursday, cutting at half day to get home not too late. Baby-wise it went much […]

## Mathematicians Go Hollywood

Did you know that in 2008 a mathematician won an Academy Award? Do you know how to model realistic hair for animation movies or a bomb deflagrating for an action movie? Or you simply need some effective active contour segmentation method? All these questions have in common an effective, yet intuitive, mathematical framework: level set […]

## Women in Mathematics in Finland: Kirsi Peltonen

I am so excited to announce this upcoming event: the first lecture Women in Mathematics in Finland. I organised the seminar as national coordinator for European Women in Mathematics, since we discussed with the local members that we needed our local network to be more active. Visibility for women in mathematics is much needed in Finland, […]