Gunnar Stefansson

Research interests

I am a statistician, currently interested in cryptocurrencies and web-assisted education, particularly applications to low-income regions of the world

Check the Google Scholar list for recent stuff

1 Cryptocurrencies and the SmileyCoin

The SmileyCoin is a cryptocurrency developed with features for education and charity.
The coin was developed as a method to reward students in the tutor-web (below) and associated research and development.
It is currently also used as a generic method to donate to charities.

2 Web-assisted education

Status

This is a combination of research and development. The research part is on how students respond to on-line quiz questions and rewards.
Other research questions include how grading schemes or timeouts or hints should be designed to enhance learning. The development is within the "tutor-web", with the goal of providing an open on-line university.

Some links and references

Publication: The tutor-web (Stefansson, 2004) The current (pilot) tutor-web entry point
Manuscript: Learning with the tutor-web The tutor-web: Notes and comparisons with other systems
A proposal: Future research and development with the tutor-web

3 Statistical models of marine ecosystems

Status

This consisted of several sub-projects which were active for many years. The largest single subproject was the development of Gadget, a framework for statistical multispecies modelling.

Some links and references

Publication: Requirements for a multispecies model (Stefansson and Palsson, 1998) Publication: Combining controls, MPAs, quota and effort (Stefansson and Rosenberg, 2005) Publication: A simple example of a Gadget model implementation (Taylor et al, 2007)
Publication: Length distributions in surveys. (Hrafnkelsson and Stefansson, 2004) Publication: Designing marine protected ares (Stefansson and Rosenberg, 2006) Publication: Risk analysis of a harvest control rule (Baldursson et al, 1996)
Publication: On species interactions (Stefansson et al, 1998) Manuscript: A bootstrap method for ... statistical multispecies models Publication: Multispecies risk analysis (Danielsson et al, 1999)
The Gadget home page Gadget User Guide Manuscript: Gadget overview paper

3 Multiple comparisons

Status

This is old stuff.

Some links and references

Publication: Basis for partitioning principle Paper: The partitioning principle

4 Marine surveys

Status

This is old stuff.
This was a topic of interest for many years and was a combination of research and development. The focus was marine research using autonomous underwater vehicles.

Some links and references

Publication: The delta-gamma method (Stefansson 1996) Publication: Icelandic groundfish survey (Palsson et al 1989)
Publication: Distribution of cod-survey data (Brynjarsdottir and Stefansson, 2004) Publication: On survey designs (Cooper et al, 2004) Publication: Analysis of stomach content data (Stefansson and Palsson, 1997)
Manuscript: Planned AUV research in Iceland Manuscript: Reliability of a modular AUV Hafmynd, developer of the Gavia AUV