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 …
Online continuous decoy optimization
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. …
StreamingBandit
I recently added an implementation of our Lock-in Feedback algorithm to StreamingBandit. StreamingBandit was originally developed by Maurits Kaptein and Jules Kruijswijk as “a Python Tornado based asynchronous web server to quickly setup and evaluate …
Where lock-in feedback finds and tracks optimal selling price
After my bare bones Python implementation of Davide Iannuzzi’s and Maurits Kaptein’s “Lock in Feedback” (LiF) algorithm, I thought it interesting to get a better feel for the algorithm’s capabilities and constraints by putting it …
Totem Open Health
Proud to present the Totem Open Health Sensor as the fledgling star of the video above. This sensor is one of the technologies that is being developed in the context of our Totem Open Health …
An introduction to Lock-in Feedback
Currently, I am privileged to be working with Dr. Davide Iannuzzi, Professor in Experimental Physics, and Dr. Maurits Kaptein, assistant professor in Artificial Intelligence, on real-world applications of “Lock in Feedback” – where “Lock in …
Accelerometer step counter in R
I developed the following script to experiment a little with the Totem Health Sensor. It takes a CSV containing a sensor’s raw accelerometer data (consisting of a time-stamp, an X, an Y and a Z …
UNICEF Wearables for Good: we made it to the finals
The challenge: To design wearable and sensor technology that serves people in resource constrained environments. Our solution: Totem Open Health is currently developing a low-cost, passive, mobile and non-invasive system to monitor fetal health. Monitoring …