Gyldendal Book Launch Event

event_241693872I got invited to give a talk at Gyldendal as part of a book launch event for the book “Det man måler er man selv” about the self-tracking phenomenon. The author is Anders Høeg Nissen.

In my talk I discussed some of the perspectives on self-tracking and quantified self and used our smartphone brain scanner as an example of how we can measure our brains.

The picture is courtesy of Thomas Harborg.

TEDxCopenhagen talk: Human Data for Life

On May 17th I was invited to give a TED talk as part of a TEDxCopenhagen Salon Event focusing on technology organized by TEDxCopenhagen and The Danish Society of Engineers (IDA).


The theme of the event was ”Breaking Currents” and the ambiguous wording of the theme inspired me to the ambiguous title of my talk: Human Data for Life.


Videos from the event should be posted within a couple of weeks.

Quantified Self Conference 2013 in Amsterdam

As part of my participation in the fourth Quantified Self Conference I chaired a breakout session on QS Research where I motivated the discussion by presenting some of our ongoing research, including the Smartphone Brain Scanner and the Sensible DTU project. There is a growing interest and increasing number of researchers and scholars participate in the QS conferences, which was apparent from our breakout room being completely full.


App for the DTU Annual Party

A group of my students from my Mobile Application Prototyping class (spring semester course 02827) has developed an Android app for the DTU Annual Party, which allow the participants at the party to navigate through all the events and see where and when the events are and set alarms.


The app is available for download in Google Play. Congratulations on the nice work to Adrian Alan Pol, Albert Fernández de la Peña, and Javier Calvo Torres.

Personal Informatics Workshop @ CHI2013

As part of the ACM CHI2013 conference we held our two day Personal Informatics Workshop and hackathon. We had a record number of submissions and accepted 24 papers. Google had kindly sponsored the workshop with a number of self-tracking devices that participants could use as part of their hackathon projects.


During the two day hackathon five groups developed personal informatics concepts and systems and we concluded the workshop with a joint meetup with the local Quantified Self Paris Meetup Group where the groups presented their results.


QS Spiral: Visualizing Periodic Quantified Self Data

As part of the Personal Informatics Workshop at CHI2013 we presented our paper QS Spiral: Visualizing Periodic Quantified Self Data. The paper is co-authored with Andrea Cuttone and Sune Lehmann.

spiral1 spiral2

In the paper we propose an interactive visualization technique QS Spiral that aims to capture the periodic properties of quantified self data and let the user explore those recurring patterns. The approach is based on time-series data visualized as a spiral structure. The interactivity includes the possibility of varying the time span and the time frame shown, allowing for different levels of detail and the discoverability of repetitive patterns in the data on multiple scales.

Quantified Self Bay Area Meetup #29 in Berkeley

Along with 100+ other QS’ers I participated in the Quantified Self Bay Area Meetup #29 in Berkeley tonight, as well as enjoyed the nice view from Skydeck in Berkeley.

QSMeetup29BerkeleyBut of course enjoyed most the quite varied mix of show&tell talks and interesting conversations with people deeply engaged in self-tracking – to understand the phenomenon deeper.

E-learning User Experience Engineering

During three weeks in January my colleague Michael Kai Petersen and I had the opportunity to teach our course on User Experience Engineering with the twist that it was also offered as a KAIST e-learning course together with the KAIST Division of Web Science and Technologies (WebST). Students from KAIST could tune into the  lectures that were being streamed live in the morning here, which were in the afternoon in South Korea.
UXEIn terms of e-learning I found that a major challenge is the high level of interactivity in the course. Throughout the three weeks students continuously work on assignments that involve conceptualizing novel prototype gesture interfaces which are presented and evaluated in class. While the Adobe Connect for eLearning environment offers sharing of multiple content elements (streaming video, slides, notes, discussion, etc.) the technology is still a barrier. That is, latency is an issue and the bandwidth is still limited in terms of offering a seamless and transparent dialogue that is an integral part of the interactivity and evaluation that is a core element in this course. Most importantly it was a great learning experience.

Cognitive Measurements at the Quantified Self Conference

Together with Yoni Donner (who’s behind Quantified Mind) I did a breakout session on the topic Cognitive Measurements at the Quantified Self Conference at Stanford.


Our motivation was to put more emphasis on cognitive measurements in the QS community saying that measuring cognitive functions is difficult but provides a much richer understanding of ourselves compared to single-dimension measurements (such as steps taken, heart-rate and weight) that have been the primary focus of the QS community…

Smartphone Brain Scanner Available as Open Source

We are proud to announce the availability of the Smartphone Brain Scanner as open source under the MIT License.

SmartphoneBrainScanner is a framework for building cross-platform real-time EEG applications. Originally developed at Technical University of Denmark for collecting and analyzing signals from Emotiv EPOC headset, its extensible architecture allows working with various EEG systems and multiple platforms.


SmartphoneBrainScanner contains state-of-the-art techniques for working with multi-channel EEG signal in real-time, most notably source reconstruction methods with online adaptation to the noise level. Current implemented source reconstruction approaches cover the minimum-norm and low resolution tomography (LORETA) methods formulated in a Bayesian framework using a expectation-maximization scheme for hyperparameter estimation. The SBS2 source reconstruction is realized using a pre-build forward model connecting the cortical surface with the electrodes at the scalp. The current forward model provided with the software is a 3-spheres model obtained from the Matlab toolbox SPM8 using coarse spatial resolution and with sensor positions in accordance with the Emotiv EPOC system.

Source code and additional information is available on the smartphonebrainscanner project website.

ArtistRecommender winner app at Roskilde Labs

With the Roskilde ArtistRecommender app for Android, it is possible to get personal artist recommendations. Find the bands playing at Roskilde Festival which are similar to your taste in music, and explore new music at the Roskilde Festival.


The app is developed by three masters students in our Digital Media Engineering program at DTU Informatics under my supervision and was recently selected as one of four winner apps at Roskilde LABS ’12. Congratulations to Erik Beuschau, Michael Lunøe and Rasmus Theodorsen.

The DTU Roskilde site also has a short article (in danish) about the ArtistRecommender app.

Experiments with mobile apps at Roskilde Festival 2012

roskilde_2012This year at Roskilde Festival we are running a set of experiments by having festival participants using cool apps that have been developed by students in our lab:

  • Orange Fever – a massive social game where you infect others using Bluetooth and spread the ‘Orange Fever’
  • Hide and Seek – a game about meeting new people at Roskilde Festival by means of your smartphone
  • Roskilde Decibel – the app will collect ambient noise level showing the user the level of noise exposure s/he has been exposed to
  • MusicNerd – navigate between concerts in a tightly packed music schedule at Roskilde Festival 2012
  • SoundRate – rate your music preferences and experiences and provide useful feedback
  • ArtistRecommender – browse the artists at Roskilde Festival 2012 and get personal recommendations

All apps can be downloaded from Google Play.

Personal Informatics in Practice workshop at CHI 2012

Presentation of research paper “A Cross-Platform Smartphone Brain Scanner” at CHI 2012. The Personal Informatics in Practice: Improving Quality of Life Through Data workshop will be a gathering of researchers, designers, and practitioners exploring how to better support personal informatics in people’s everyday lives.


Guest Post on the Quantified Self Blog

quantifiedself_logoAuthors of articles for the Personal Informatics in Practice workshop at CHI 2012 in Austin, TX on May 6, 2012 have been invited to write a summary for the Quantified Self Blog. Our Blog Guest Post is a summary of our paper “A Cross-Platform Smartphone Brain Scanner”. It is authored by Jakob Eg Larsen, Arkadiusz Stopczynski, Carsten Stahlhut, Michael Kai Petersen, and Lars Kai Hansen.

The workshop will be a gathering of researchers, designers, and practitioners exploring how to better support personal informatics in people’s everyday lives.