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- Václav Smídl, Radek Hofman
- Technometrics
- 2014

- Kamil Dedecius, Radek Hofman
- Communications in Statistics - Simulation and…
- 2012

We are concerned with Bayesian identification and prediction of a nonlinear discrete stochastic process. The fact, that a nonlinear process can be approximated by a piecewise linear function advocates the use of adaptive linear models. We propose a linear regression model within a Rao-Blackwellized particle filter. The parameters of the linear model are… (More)

Reliable and up to date information represents principal prerequisite for effective management of intervention operations targeted on emergency situations during accidental releases of harmful substances into the atmosphere. Promising way of this trend insists in development of assimilation techniques for improvement of model prognosis reliability on basis… (More)

- Radek Hofman, Petr Pecha
- IGARSS
- 2008

The paper presents a scheme for estimation of spatio–temporal evolution of groundshine dose from radionuclides deposited on terrain in long–time horizon. Groundshine dose mitigation is modeled via semi–empirical formulas taking into account environmental and decay processes. We are aware of the fact that the model is imperfect and special attention is paid… (More)

- Václav Smídl, Radek Hofman
- Proceedings of the 16th International Conference…
- 2013

Computational efficiency of the particle filter, as a method based on importance sampling, depends on the choice of the proposal density. Various default schemes, such as the bootstrap proposal, can be very inefficient in demanding applications. Adaptive particle filtering is a general class of algorithms that adapt the proposal function using the observed… (More)

- Petr Pecha, Radek Hofman
- 2008

An improvement of mathematical model predictions of environmental pollution can be achieved on basis of assimilation of model simulations with real observations incoming from terrain. In this article we pay attention to development and investigation of applicability of one simple empirical method of objective analysis based on least square approach. Output… (More)

- Václav Smídl, Radek Hofman
- CDC
- 2012

Navigation of unmanned aerial vehicles (UAVs) is a popular and well studied topic. In this contribution, we apply the existing decision theory to the problem of tracking atmospheric pollution, specifically accidental release of radiation. The UAVs work in tandem with the stationary radiation monitoring network to estimate consequences of the radiation… (More)

- Radek Hofman
- 2008

The paper presents a scheme for estimation of spatio–temporal evolution of a quantity with unknown model error. Model error is estimated on basis of measured–minus– observed residuals evaluated upon measured and modeled values. Methods of Bayesian filtering are applied to the problem. The main contribution of this paper is application of general… (More)

- Petr Pecha, Radek Hofman
- ERCIM News
- 2010

17 run-up algorithm. The code requires as input detailed information on seismic source mechanisms, gridded bathymetric data information for the open sea propagation, and a set of gridded Digital Elevation Models (DEM) containing bathymetry and topography for use during the inundation phase. Accurate bathymetry and topography data for Rhodes were… (More)

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