Displaying items by tag: light scattering computation
This is the third blog posts of a series dedicated to numerical methods for parameter reconstruction. In this postwe try to find the parameters with maximum likelidood based on a set of measurements. In order to do this with a small number of expensive simulations of the measurement process, we use the Bayesian least square method that is part of JCMsuite`s Analysis and Optimization Toolkit. Based on Gaussian process regression, the method learns the dependence of the measurements on the system paramters. This also allows to reconstruct the full posterior probability distribution of the system paramters given the measurement results.
This is the second blog posts of a series dedicated to numerical methods for parameter reconstruction. An important question in the context of parameter reconstruction is how to setup an experimental measurement in order to retrieve enough meaningful information about the system parameters. This post describes the concept of variance-based sensitivity analysis which quantifies the sensitivity of the measurement process to the parameter values.
This is the first blog posts of a series dedicated to numerical methods for parameter reconstruction. The overall goal is to determine the value of some system parameters, which are hard to measure directly, based on a set of more easily measurable observables and a numerical model of the measurement process. The first blog contains a brief introduction to the main concepts of parameter reconstruction while the following posts are dedicated to the application of some numerical methods and tools.
This blog post introduces the curvilinear element option for creating curved mesh elements. We assess under which conditions using a curvilinear degree is applicable and quantify the resulting inrease in accuracy.
This blog post discusses defining the relative permittivity of materials in JCMsuite. Different methods for taking the frequency dependence of the permittivity into account are presented, including using a model and loading tabulated data from a file.