Radboud University Nijmegen
Master’s degree, Computer Science
2012 – 2014

Radboud University Nijmegen
Bachelor’s degree, Computer Science
2009 – 2012

Gymnasium Apeldoorn
VWO Degree
2003 – 2009


Stein Keijzers, Peter Maandag, Elena Marchiori and Ida Sprinkhuizen-Kuyper (2013).
Image Similarity Search using a Negative Selection Algorithm
In: Pietro Liò, Orazio Miglino, Giuseppe Nicosia, Stefano Nolfi and Mario Pavone (eds.) Advances in Artificial Life, ECAL 2013, Proceedings of the Twelfth European Conference on the Synthesis and Simulation of Living Systems, MIT Press, pp. 838-845.
ISBN 978-0-262-31709-2

The Negative Selection Algorithm is an immune inspired algorithm that can be used for different purposes such as fault detection, data integrity protection and virus detection. In this paper we show how the Negative Selection Algorithm can be adapted to tackle the similar image search problem: given a target image, images from a large database similar to the query have to be detected. Results of our experimental analysis indicate that the proposed algorithm is capable of detecting images similar to a target (self) image, given the right detectors. Source code and data used in the experiments are available on request.


During my study and work experience I’ve used countless different tools and programming languages. I’ve been trained and educated to quickly learn and understand to work with different APIs, tools and development environments. The following list is just an indication of technologies or tools I have most experience with or recently worked with, but not a representation of my complete skill set.

Best Known:
C++, Java, C#, Lua, XML, Unreal Engine 4, Unity, Perforce, Git, Steam, Xbox One, Playstation 4

Also Known:
Unigine, PHP, JavaScript, Android, SVN, …

Dutch, English

Personal Interests:

Video games, computer hardware, music and technology.

What people say about me:

Christiane La
Junior FX Artist with Ubisoft

“Peter is invested, competent and precise, he quickly answered to the group’s technical needs and allowed us to work efficiently with Perforce and Unreal Engine 4, which really was time saving. On a personal level, he has created blueprints that enhanced my liberty in creating FX. It is nice to work with him, and I’d like to continue to do so.”

Lia Pianelli
Co-founder of Recurring Void SAS, Paris

“Peter has been a wonderful partner to work with. Not only did he work quickly and efficiently but he also was quick to understand our intentions and deliver technical support that, more than once, surpassed our expectations. I wholeheartedly recommend trusting peter for whatever project you may have, he truly is of great help. I hope I will have the opportunity to work with him again.”

Download my resume:

PDF: download here