Assessing Gameplay Emotions from physiological signals: a fuzzy decision trees based model
Author
Orero, Joseph Onderi
Levillain, Florent
Damez-Fontaine, Marc
Rifqi, Maria
Bouchon-Meunier, Bernadette
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As video games become a widespread form of entertainment, there is need to develop new evaluative
methodologies for acknowledging the various aspects of the player’s subjective experience,
and especially the emotional aspect. Video game developers could benefit from being aware of
how the player reacts emotionally to specific game parameters. In this study, we addressed the
possibility to record physiological measures on players involved in an action game, with the main
objective of developing adequate models to describe emotional states. Our goal was to estimate
the emotional state of the player from physiological signals so as to relate these variations of the
autonomic nervous system to the specific game narratives. To achieve this, we developed a fuzzy
set theory based model to recognize various episodes of the game from the user’s physiological
signals. We used fuzzy decision trees to generate the rules that map these signals to game episodes
characterized by a variation of challenge at stake. A specific advantage to our approach is that we
automatically recognize game episodes from physiological signals with explicitly defined rules
relating the signals to episodes in a continuous scale. We compare our results with the actual game
statistics information associated with the game episodes.