Customisable Collective Choice


The ambition of this research programme is to enable the creation of software tools that will help people to better understand and to deliberate over the mechanisms they use to make decisions together, and ultimately to customise those collective choice mechanisms to their specific needs. An example for a collective choice mechanism is a voting rule for selecting a collectively preferred element from a set over which voters can report their individual preferences. There exist many different voting rules and they all have different properties, pertaining to, for instance, a particular perception of fairness or the amount of information they elicit from voters. I propose to approach the challenge of customisable collective choice by developing a methodology for formally representing collective choice mechanisms and for reasoning about them. Specifically, I want to enable users to formally specify desirable properties, to determine whether a given mechanism satisfies them, and to design new mechanisms that do. The potential impact of this work is significant: it can provide the foundations for new forms of decision making technologies in online social networking applications and, in the long run, it can contribute to creating a more open, participatory, and engaging society. Scientifically, my approach is grounded in the fields of computational social choice and knowledge representation.


Project number


Main applicant

Dr. U. Endriss

Affiliated with

Universiteit van Amsterdam, Faculteit der Natuurwetenschappen, Wiskunde en Informatica, Institute for Logic, Language and Computation (ILLC)

Team members

Z. Terzopoulou MSc


01/09/2017 to 31/08/2022