Last week Maurits, Davide and I had a great time demonstrating our “Flappy Bird” game at the Physics@Veldhoven conference. “Flappy Bird” invites a player to wave his or her arms in a rhythm set by …
Lock-in Amplifier Game at Physics@Veldhoven
Qualtrics wide to long export file conversion
While helping out with the implementation of a slightly tangled Qualtrics survey, I needed to develop some workarounds that might be of use to others – so I thought I’d share them with you here! …
Our paper “Tracking the decoy” has been published!
Really happy (and proud) that our paper on the application of lock-in feedback for optimal placements of decoys has just been published – written in close collaboration with Prof. Davide Iannuzzi and Dr. Maurits Kaptein. …
Flow: LiF in the zone
I am currently testing yet another application of the versatile “Lock in Feedback” (LiF) algorithm: Dynamic in-game Difficulty Adjustment. Inspired by Mihaly Csikszentmihalyi’s Flow theory, dynamic difficulty adjustment (DDA) or dynamic game balancing (DGB), “is …
Face ratio optimization
Do you like average faces best? Adjust the sliders and find out! * If you find the avatars at the center of the feature space more attractive than those at the perimeters, you are …
Photographic Memories
Tique Art recently released several booklets that provide a compelling overview of OTANI NIEUWENHUIZE, the new collaborative project of Japanese photographer Shinji Otani and Dutch photographer Johan Nieuwenhuize. I am particularly smitten with the handmade …
Tear detection device
We just put our Tear Detection device through its paces – and it works even better than expected. The device is built from a tiny USB camera and a Seek Thermal Compact thermal imaging camera. …
Gallery Tracks – Artist-Scientist Project
Together with Johan Nieuwenhuize I am currently working on a Artist-Scientist project that traces the whereabouts of visitors to an exposition. This will enable Johan to adapt and evolve his installation based on the …
Locking into an active life
STW Open Mind program two-minute video entry. To make the video fit the STW’s two-minute time limit, we had to remove some sections of our original video and compress it by about ten percent. As …
Arxiv: Online Avatar Optimization
My latest paper is now available on Arxiv – see summary and figure below. Abstract: “Lock-in feedback circuits are routinely used in physics laboratories all around the world to detect weak signals in a noisy …
Lock in Feedback in two dimensions
A visualization demonstrating how Lock in Feedback (LiFt) is able to optimize over multiple dimensions – here, optimizing the position of a decoy on two attributes. If you are interested in playing around with Lock …
Cold tear
Thermographic video of a cool tear rolling down a warm cheek. At the Amsterdam VU University Physics lab with Asmir Gračanin.
Online continuous decoy optimization
April 2016: We have removed Qualtrics from our experimental workflow, and have instead chosen for a custom Drupal based survey engine. As time went by we needed more and more workarounds to get our code …
Decoy Effect LiF simulation in R
We ran the R simulation below to test our hypothesis that LiF should be able to optimize decoy effects (I will add comments further clarifying my train of thought as reflected by the script within …
The lock-in whiteboard session
Now that we had successfully run some more simulations with Davide’s and Maurits’s lock-in feedback algorithm, we still needed to decide which real life problems might be the most conductive to LiF’s optimum finding prowess. …