Guillaume Levieux

Guillaume Levieux
Conservatoire National des Arts et Métiers | CNAM · Centre d'Etudes et De Recherche en Informatique et Communications (CEDRIC)

PhD

About

21
Publications
23,646
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307
Citations

Publications

Publications (21)
Conference Paper
Full-text available
This paper describes our research investigating the perception of difficulty in video games, defined as players’ estimation of their chances of failure. We discuss our approach as it relates to psychophysical studies of subjective difficulty and to cognitive psychology research into the overconfidence effect. The starting point for our study was th...
Conference Paper
Full-text available
This paper synthetically presents a reliable and generic way to evaluate the difficulty of video games, and an experiment testing its accuracy and concordance with subjective assessments of difficulty. We propose a way to split the gameplay into measurable items, and to take into account the player's apprenticeship to statistically evaluate the gam...
Conference Paper
Full-text available
In this paper, we study the link between difficulty and player's motivation in two games developed by Ubisoft®: Rayman®Legends and Tom Clancy's The Division®. We describe a method to estimate players' difficulty over time and link it's time varying effect with players retention. Results confirm flow and self-efficacy theory. Also, for the first hou...
Article
Full-text available
In this paper, we discuss the interest and the need to evaluate the difficulty of single player video games. We first show the importance of difficulty, drawing from semiotics to explain the link between tension-resolution cycles and challenge with the player’s enjoyment. Then, we report related work on automatic gameplay analysis. We show through...
Chapter
Full-text available
Difficulty is a fundamental factor of enjoyment and motivation in video games. Thus, many video games use Dynamic Difficulty Adjustment systems to provide players with an optimal level of challenge. However, many of these systems are either game specific, limited to a specific range of difficulties, or require much more data than one can track duri...
Conference Paper
Full-text available
Difficulty is one of the major motivational pull of video games, and thus many games use Dynamic Difficulty Adjustment (DDA) systems to improve the game experience. This paper describes our research investigating the influence of DDA systems on player's confidence, evaluated using an in-game bet system. Our hypothesis is that DDA systems may lead p...
Conference Paper
Full-text available
The large number of protein structures deposited in the protein database provide an opportunity to examine the structure relations using computational algorithms, which can be used to classify the structures based on shape similarity. In this paper, we report the result of the SHREC 2017 track on shape retrievals from protein database. The goal of...
Conference Paper
Full-text available
One of the most problematic issues in healthcare is the patient's lack of adherence to the therapy. Patients' motivation is indeed hard to maintain when they have to execute repetitive, boring or tedious exercises. In such cases, they tend to practice less regularly and even to entirely give up the therapeutic protocol. Fortunately, therapeutic exe...
Conference Paper
Full-text available
In the present work, we describe and discuss two interactive visual-ization techniques recently added to the Udock software. First, we propose to display a spherical projection of the protein's molecular surface properties. The resulting 2D map allows to get in one glance a global view of the protein. Second, we propose to let the user choose a spe...
Article
Full-text available
Protein-protein interactions play a crucial role in biological processes. Protein docking calculations' goal is to predict, given two proteins of known structures, the associate conformation of the corresponding complex. Here, we present a new interactive protein docking system, Udock, that makes use of users' cognitive capabilities added up. In Ud...
Conference Paper
Full-text available
In this paper, we present a collaborative game designed for Sifteo Cubes, a new tangible interface for multiplayer games. We discuss how this game exploits the platform's interface to transfer some of the game mechanics into the non-digital world, and how this approach affects both the player's experience and the design process. We present the tech...
Conference Paper
Full-text available
This paper is a first step toward the exploration and further development of the narrative possibilities offered by emergent games. First, we present the five characteristics of emergent narratives that we believe to be fundamental: coherence, agency, possibility space, uncertainty and coauthoring. Then, we investigate the presence of these charact...
Conference Paper
Full-text available
In this paper, we present a new model to analyse therapeutic games. The goal of the model is to describe and analyse the relations between the three aspects of a therapeutic game: the player, the game, and the therapy. The model is intended to game designers. It is a tool to improve the communication between health experts and game designers, and t...
Conference Paper
Full-text available
This paper presents a way to dynamically influence the shape and movements of a simulated crowd. We propose a tool and system that allows to modify a crowd?s dynamics in an intuitive, semantically rich and out of context fashion, while being independent from the global path finding architecture and having a low computational cost. We follow a mixed...
Article
Full-text available
The goal of this thesis is to propose a general and measurable definition of the difficulty in video games. The current approach, widely adopted, is mainly heuristic, and depends on each game's context. We propose a generic way to analyse a gameplay, taking into account the player's apprenticeship, which allows to statistically evaluate the gamepla...
Article
Présentation d'un modèle d'évaluation de la difficulté d'un gameplay ainsi que des résultats d'une expérimentation de ce modèle.
Conference Paper
Full-text available
In this this paper, we discuss the interest and the need to evaluate the difficulty of single player video games. We first show the importance of difficulty, drawing from semiotics to explain the link be-tween tension-resolution cycles, and challenge with the player's enjoy-ment. Then, we report related work on automatic gameplay analysis. We show...
Conference Paper
Full-text available
This paper describes the DEEP project (Dialogs taking into account Experience, Emotions and Personality, adapted to computer games), which started in June 2006. The aim of the project is to provide generic solutions for the integration of autonomous Non Player Characters (NPCs) in next-generation adventure games. DEEP NPCs, equipped with a personal...
Article
This paper describes the DEEP project (Dialogs taking into account Experience, Emotions and Personality, adapted to computer games), which started in June 2006. The aim of the project is to provide generic solutions for the integration of autonomous Non Player Characters (NPCs) in next-generation adventure games. DEEP NPCs, equipped with a personal...

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Project (1)
Project
Find better theoretical and practical tools to understand the link between game's difficulty and player's motivation / enjoyment.