Bastien Chopard
63 papers 131 citations h-index 5 1995–2026
SISMIK for brain MRI: Deep-learning-based motion estimation and model-based motion correction in k-space
MRI, a widespread non-invasive medical imaging modality, is highly sensitive to patient motion. Despite many attempts over the years, motion correction remains a difficult problem and there is no...
Digital Blood in Massively Parallel CPU/GPU Systems for the Study of Platelet Transport
We propose a highly versatile computational framework for the simulation of cellular blood flow focusing on extreme performance without compromising accuracy or complexity. The tool couples the...
Optimal Load Balancing and Assessment of Existing Load Balancing Criteria
Parallel iterative applications often suffer from load imbalance, one of the most critical performance degradation factors. Hence, load balancing techniques are used to distribute the workload...
Towards Informed Partitioning for Load Balancing: a Proof-of-Concept
Most parallel applications suffer from load imbalance, a crucial performance degradation factor. In particle simulations, this is mainly due to the migration of particles between processing...
Controllability of the Voter Model: an information theoretic approach
We address the link between the controllability or observability of a stochastic complex system and concepts of information theory. We show that the most influential degrees of freedom can be...
On the Benefits of Anticipating Load Imbalance for Performance Optimization of Parallel Applications
In parallel iterative applications, computational efficiency is essential for addressing large problems. Load imbalance is one of the major performance degradation factors of parallel...
Identification of complex network topologies through delayed mutual information
The definitions of delayed mutual information and multi-information are recalled. It is shown how the delayed mutual information may be used to reconstruct the interaction topology resulting from...
Information processing features can detect behavioral regimes of dynamical systems
In dynamical systems, local interactions between dynamical units generate correlations which are stored and transmitted throughout the system, generating the macroscopic behavior. However a...
Distributed Multiscale Computing with MUSCLE 2, the Multiscale Coupling Library and Environment
We present the Multiscale Coupling Library and Environment: MUSCLE 2. This multiscale component-based execution environment has a simple to use Java, C++, C, Python and Fortran API, compatible...
Polynomial methods for Procedural Terrain Generation
A new method is presented, allowing for the generation of 3D terrain and texture from coherent noise. The method is significantly faster than prevailing fractal brownian motion approaches, while...