Concept
Régression sur discontinuité
Publications associées (6)
ON THE DESIGN AND OPTIMIZATION OF WIDE ANGLE DIFFRACTIVE OPTICAL ELEMENTS
Diffractive optical elements (DOEs) which consist of microstructure surface relief permit the generation of the spatial distribution of light beams by using a single element. Due to their compact size, design flexibility, and mass productivity, they are us ...
EPFL2021Adjoint method and inverse design for diffractive beam splitters
Diffractive optical elements with a large diffraction angle require feature sizes down to sub-wavelength dimensions, which require a rigorous electromagnetic computational model for calculation. However, the computational optimization of these diffractive ...
SPIE-INT SOC OPTICAL ENGINEERING2020Adjoint-based Optimization for Diffractive Beam-Splitters
Computational optimization of diffractive elements is often limited by a large number of design parameters. Adjoint method allows the gradient of target function respect to all design variables to be calculated with only two electromagnetic simulations. We ...
IEEE2019Counting and Sampling from Markov Equivalent DAGs Using Clique Trees
Negar Kiyavash, Saber Salehkaleybar, Kun Zhang
A directed acyclic graph (DAG) is the most common graphical model for representing causal relationships among a set of variables. When restricted to using only observational data, the structure of the ground truth DAG is identifiable only up to Markov equi ...
AAAI Press2019Optimization of k-Space Trajectories for Compressed Sensing by Bayesian Experimental Design
The optimization of k-space sampling for nonlinear sparse MRI reconstruction is phrased as Bayesian experimental design problem. Bayesian inference is approximated by a novel relaxation to standard signal processing primitives, resulting in an efficient op ...
Wiley-Blackwell2010Effects of localized electron heating and current drive on the sawtooth period
Olivier Sauter, Timothy Goodman
Localized electron heating and current drive, like those produced by electron cyclotron heating (ECH) systems, are powerful tools for controlling the sawtooth period. They allow the direct modification of the plasma parameters which determine the sawtooth ...
2003