Photo: Olivier Cailloux


Olivier Cailloux, Maitre de Conférences (meaning: researcher and teacher) in Computer Science


Keywords of interest:

Research interests

I am interested in preference modeling in multicriteria contexts, preference agregation, and explanation of recommendations adapted to the user’s subjectivity.

The field of MCDA or Multiple Criteria Decision Aiding (Figueira, Greco, and Ehrgott 2005) aims at studying methods of obtaining a model of the preferences of an individual in the following context. The individual, or decision maker, has to make a decision by selecting a subset of options, or one option, from a set of possible options. Possible options are usually called alternatives. E.g., choosing a city to live in out of a set of possible cities is a decision problem. The alternatives are evaluated using several criteria. Obtaining a global appreciation of each alternative in order to make a decision involves making trade-offs, as generally no alternative is better than every others on every criteria. The preference model of the individual represents her way of making trade-offs.

I am particularly interested by the challenges imposed on preference modeling by the thesis according to which preferences are not uniquely pre-determined in the head of the decision maker prior to the start of the modeling process. Numerous studies have indeed shown that the preference model obtained crucially depends on the way of asking questions, even among seemingly equivalent questions (Lichtenstein and Slovic 2006; Morton and Fasolo 2008). This is one of the important justifications for introducing robustness concerns when studying preference modeling.

I am also interested in the links between MCDA and formal argumentation theory (Rahwan and Simari 2009). Argumentation theory studies the ways of selecting arguments among a set of arguments given an attack relation (a binary relation indicating how arguments conflict).

Voting theory is another interest of mine. We have extended preference elicitation techniques to the selection of a voting rule; and have worked on explaining the results of voting rules on concrete examples.




Peer-reviewed conferences

Other publications