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Inference of stochastic parametrizations for model error treatment using nested ensemble Kalman filters
(John Wiley & Sons Ltd, 2019-04)
Stochastic parametrizations are increasingly used to represent the uncertainty associated with model errors in ensemble forecasting and data assimilation. One of the challenges associated with the use of these parametrizations ...
Modifying the stochastic model to mitigate GPS systematic errors in relative positioning
(2007-12-01)
The GPS observables are subject to several errors. Among them, the systematic ones have great impact, because they degrade the accuracy of the accomplished positioning. These errors are those related, mainly, to GPS ...
SPECTRUM OF STOCHASTIC ADDING MACHINES AND FIBERED JULIA SETS
(World Scientific Publ Co Pte Ltd, 2013-09-01)
Consider the basic algorithm to perform the transformation n bar right arrow n + 1 changing digits of the d-adic expansion of n one by one. We obtain a family of Markov chains on the non-negative integers through successive ...
Stochastic modeling to represent wind power generation and demand in electric power system based on real data
(Elsevier, 2016)
A methodology to model two types of random perturbation that affect the operation of electric power systems (EPS) are presented. The first uncertainty is wind power generation and is represented by a one-dimensional and ...
Option pricing under multiscale stochastic volatility
(2015)
The stochastic volatility model proposed by Fouque, Papanicolaou, and Sircar (2000) explores a fast and a slow time-scale fluctuation of the volatility process to end up with a parsimonious way of capturing the volatility ...
A stochastic discount factor approach to asset pricing using panel data
(Escola de Pós-Graduação em Economia da FGV, 2006-11-01)
Using the Pricing Equation, in a panel-data framework, we construct a novel consistent estimator of the stochastic discount factor (SDF) mimicking portfolio which relies on the fact that its logarithm is the ìcommon ...
Parametrization of open systems with effective quadratic Hamiltonians plus stochastic force
(1983-01-01)
The evolution generated by general dissipative Hamiltonians is analyzed when a stochastic force is included. Using a mapping technique, the equations of motion for the observables of interest can be given easily. A general ...