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A Comparison of Adaptive Sampling and Interpolation of 2D BRDF Subspaces
Vávra, Radomír; Filip, Jiří; Somol, P.
2013 - English
This report comprises overview of interpolation and sampling methods of Bidirectional Reflectance Distribution Function (BRDF). We analyzed 2D BRDF subspaces of eleven materials. We compared performance of five interpolation methods, three different sampling patterns, and compared twelve adaptive sampling strategies. Finally, based on knowledge of entire data we estimated sub-optimal sampling patterns and as a reference compared them with other tested sampling approaches.
Keywords:
BRDF; interpolation; sampling
Fulltext is available at external website.
A Comparison of Adaptive Sampling and Interpolation of 2D BRDF Subspaces
This report comprises overview of interpolation and sampling methods of Bidirectional Reflectance Distribution Function (BRDF). We analyzed 2D BRDF subspaces of eleven materials. We compared ...
A causal model of price and volume on market with a market maker
Šmíd, Martin; Kopa, M.
2012 - English
A model of a rational behaviour of a risk averse partially informed market maker solving multistage decision problem was proposed, implying an easily tractable and estimable stochastic model of high frequency trade and quote data process, which was subsequently successfully tested by means of data from US electronic markets.
Keywords:
market maker; rationality; price and volume process
Fulltext is available at external website.
A causal model of price and volume on market with a market maker
A model of a rational behaviour of a risk averse partially informed market maker solving multistage decision problem was proposed, implying an easily tractable and estimable stochastic model of high ...
Approximate Bayesian Recursive Estimation: On Approximation Errors
Kárný, Miroslav; Dedecius, Kamil
2012 - English
Adaptive systems rely on recursive estimation of a firmly bounded complex- ity. As a rule, they have to use an approximation of the posterior proba- bility density function (pdf), which comprises unreduced information about the estimated parameter. In recursive setting, the latest approximate pdf is updated using the learnt system model and the newest data and then ap- proximated. The fact that approximation errors may accumulate over time course is mostly neglected in the estimator design and, at most, checked ex post. The paper inspects this problem.
Keywords:
approximate estimation; adaptive systems; recursive estimation; Kullback-Leibler divergence; forgetting
Fulltext is available at external website.
Approximate Bayesian Recursive Estimation: On Approximation Errors
Adaptive systems rely on recursive estimation of a firmly bounded complex- ity. As a rule, they have to use an approximation of the posterior proba- bility density function (pdf), which comprises ...
Implementation of the algorithm MIDIA in the Google Spreadsheets
Boček, Pavel; Vrbenský, Karel
2012 - Czech
Algorithm MIDIA was modified for the platform Google Doc, which allows its use and application through Internet sharing. Algoritmus MIDIA byl převeden pod platformu Google Doc, která umožňuje jeho využití a aplikaci prostřednictvím sdílení v síti Internet.
Keywords:
phi-divergence; MIDIA; Internet sharing
Fulltext is available at external website.
Implementation of the algorithm MIDIA in the Google Spreadsheets
Algorithm MIDIA was modified for the platform Google Doc, which allows its use and application through Internet sharing.
Experiments with PID controller for fuel consumption optimization
Suzdaleva, Evgenia; Nagy, Ivan
2012 - English
This research report describes experiments performed with a Matlab simulator of a vehicle, controlled by a PID controller. The aim of control is to reduce fuel consumption and simultaneously keep the recommended safe speed.
Keywords:
Fuel consumption optimization; PID controller; recommended speed
Fulltext is available at external website.
Experiments with PID controller for fuel consumption optimization
This research report describes experiments performed with a Matlab simulator of a vehicle, controlled by a PID controller. The aim of control is to reduce fuel consumption and simultaneously keep the ...
LP relaxations and pruning for characteristic imsets
Studený, Milan
2012 - English
The geometric approach to learning BN structure is to represent it by a certain vector; a suitable such zero-one vector is the characteristic imset, which allows to reformulate the task of finding global maximum of a score over BN structures as an integer linear programming problem. The main contribution of this report is an LP relaxation of the corresponding polytope, that is, a polyhedral description of the domain of the respective integer linear programming problem.
Keywords:
learning Bayesian network structure; quality criterion; integer linear programming
Fulltext is available at external website.
LP relaxations and pruning for characteristic imsets
The geometric approach to learning BN structure is to represent it by a certain vector; a suitable such zero-one vector is the characteristic imset, which allows to reformulate the task of finding ...
Strong solutions of semilinear stochastic partial differential equations
Hofmanová, Martina
2012 - English
It it shown that stochastic parabolic equations with periodic boundary conditions driven by a finite-dimensional Wiener process have strong solutions, if the coefficients are sufficiently smooth.
Keywords:
stochastic partial differential equations; strong solutions
Fulltext is available at external website.
Strong solutions of semilinear stochastic partial differential equations
It it shown that stochastic parabolic equations with periodic boundary conditions driven by a finite-dimensional Wiener process have strong solutions, if the coefficients are sufficiently smooth.
Research on advanced methods of detection, assessment and subsequent management of radioactive contamination
Kuča, P.; Pecha, Petr
2012 - Czech
Summary Report containing the desired information and handover protocol concerning the Contract of expert support in modeling research of modern detection methods with a focus on assessing the impact of simulation radiological events on nuclear facilities. Souhrnná zpráva obsahující zadání, informace a předávací protokol ohledně smlouvy o expertní podpoře při modelovém výzkumu moderních metod detekce se zaměřením na simulační posuzování dopadu mimořádných radiačních událostí na jaderném zařízení.
Keywords:
radioactive contamination; detection of radioactivity; radiation protection
Available at various institutes of the ASCR
Research on advanced methods of detection, assessment and subsequent management of radioactive contamination
Summary Report containing the desired information and handover protocol concerning the Contract of expert support in modeling research of modern detection methods with a focus on assessing the impact ...
Determining the characteristics of the stability of rock walls and slopesof detailed digital models obtained by a combined 3D laser scanning and photogrammetric method using a remote-controlled model aircraft
Šroubek, Filip; Flusser, Jan
2012 - Czech
The summary report regarding contract research, development methodologies and algorithms for functional project determine the characteristics of stability of rock walls and slopes of detailed digital models obtained by a combined 3D laser scanning and photogrammetric method using a remote-controlled model aircraft Souhrnná zpráva ohledně smluvního výzkumu, vývoji metodiky a funkčních algoritmů pro projekt Určení charakteristik stability skalních stěn a svahů z detailních digitálních modelů získaných kombinovanou metodou 3D laserového skenování a fotogrammetrickou metodou využívající dálkově ovládaných leteckých modelů
Keywords:
photogrammetric method; stability of rock walls; image processing
Available at various institutes of the ASCR
Determining the characteristics of the stability of rock walls and slopesof detailed digital models obtained by a combined 3D laser scanning and photogrammetric method using a remote-controlled model aircraft
The summary report regarding contract research, development methodologies and algorithms for functional project determine the characteristics of stability of rock walls and slopes of detailed digital ...
Unit for signal processing from incremental sensor
Plíhal, Jiří
2012 - Czech
Research report is aimed on proposal and implementation the HMI unit for signal processing of incremental sensor and evaluation its position. Report subject includes alternative solutions, description of communication protocol, description of interface, wiring diagram and firmware including flow diagrams. Předmětem výzkumné zprávy je návrh a realizace modulu pro zpracování signálu inkrementálního snímače a vyhodnocování jeho polohy. Obsahem zprávy je návrh variantních řešení, popis komunikačního protokolu, popis rozhraní, schéma zapojení a firmware včetně vývojových diagramů.
Keywords:
Human Machine Interface; signal processing; bus communication
Available at various institutes of the ASCR
Unit for signal processing from incremental sensor
Research report is aimed on proposal and implementation the HMI unit for signal processing of incremental sensor and evaluation its position. Report subject includes alternative solutions, description ...
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