Browsing by Keywords "Parameter estimation"
Now showing items 120 of 80

3D motion estimation and wireframe adaptation including photometric effects for modelbased coding of facial image sequences
(IEEE, 199406)We propose a novel formulation where 3D global and local motion estimation and the adaptation of a generic wireframe model to a particular speaker are considered simultaneously within an optical flow based framework ... 
Accuracy limits of distance estimation in visible light systems with RGB LEDs
(IEEE, 201909)The distance estimation problem is investigated for visible light positioning (VLP) systems with redgreenblue (RGB) light emitting diodes (LEDs). The accuracy limits on distance estimation are calculated in terms of the ... 
Algebraic error analysis of collinear feature points for camera parameter estimation
(Elsevier, 20110104)In general, feature points and camera parameters can only be estimated with limited accuracy due to noisy images. In case of collinear feature points, it is possible to benefit from this geometrical regularity by correcting ... 
An alternative method to measure the likelihood of a financial crisis in an emerging market
(Elsevier BV, 2007)This paper utilizes an early warning system in order to measure the likelihood of a financial crisis in an emerging market economy. We introduce a methodology, where we can both obtain a likelihood series and analyze the ... 
Application of the RIMARC algorithm to a large data set of action potentials and clinical parameters for risk prediction of atrial fibrillation
(Springer, 2015)Ex vivo recorded action potentials (APs) in human right atrial tissue from patients in sinus rhythm (SR) or atrial fibrillation (AF) display a characteristic spikeanddome or triangular shape, respectively, but variability ... 
The asymptotic properties of estimates of the parameters of nonlinear time series
(Springer, 2000)Asymptotic properties of nonlinear time series parameter estimators constructed on trajectories of stochastic systems under stationary and transient conditions are studied with the use of the leastsquares method. The ... 
Automatic performance evaluation of Web search engines
(Elsevier, 2004)Measuring the information retrieval effectiveness of World Wide Web search engines is costly because of human relevance judgments involved. However, both for business enterprises and people it is important to know the most ... 
Average fisher information optimization for quantized measurements using additive independent noise
(IEEE, 2010)Adding noise to nonlinear systems can enhance their performance. Additive noise benefits are observed also in parameter estimation problems based on quantized observations. In this study, the purpose is to find the optimal ... 
Bandwidth selection for kernel density estimation using fourier domain constraints
(Institution of Engineering and Technology, 2016)Kernel density estimation (KDE) is widelyused for nonparametric estimation of an underlying density from data. The performance of KDE is mainly dependent on the bandwidth parameter of the kernel. This study presents an ... 
BSSFP görüntülemede eliptik sinyal modeline dayali eşzamanlı parametre tahmini
(IEEE, 2018)Faz döngülü dengeli kararlıdurum serbest devinim (bSSFP) görüntüleme tekniginde, görüntüde oluşan rezonans dışı frekanslardan kaynaklı sinyal düşüşlerinin uzamsal konumunu kaydırmak amacıyla her çekimde RF darbelerinin ... 
Collective oscillations in a twodimensional BoseEinstein condensate with a quantized vortex state
(The American Physical Society, 2005)We study the effect of lower dimensional geometry on the frequency splitting of the quadrupole oscillations of a harmonically trapped BoseEinstein condensate due to the presence of a quantized vortex. To study the effect ... 
Comparison of the CAFDF and sage algorithms in multipath channel parameter estimation
(IEEE, 200807)In this paper, performance of the recently proposed Cross Ambiguity Function  Direction Finding (CAFDF) technique is compared with the Space Alternating Generalized Expectation Maximization (SAGE) technique. The CAFDF, ... 
A comparison of two methods for fusing information from a linear array of sonar sensors for obstacle localization
(IEEE, 1995)The performance of a commonly employed linear array of sonar sensors is assessed for pointobstacle localization intended for robotics applications. Two different methods of combining timeofflight information from the ... 
Comprehensive lower bounds on sequential prediction
(IEEE, 201409)We study the problem of sequential prediction of realvalued sequences under the squared error loss function. While refraining from any statistical and structural assumptions on the underlying sequence, we introduce a ... 
A confidence ellipsoid approach for measurement cost minimization under Gaussian noise
(IEEE, 201206)The wellknown problem of estimating an unknown deterministic parameter vector over a linear system subject to additive Gaussian noise is studied from the perspective of minimizing total sensor measurement cost under a ... 
Cost minimization of measurement devices under estimation accuracy constraints in the presence of Gaussian noise
(Elsevier, 2012)Novel convex measurement cost minimization problems are proposed based on various estimation accuracy constraints for a linear system subject to additive Gaussian noise. Closed form solutions are obtained in the case of ... 
Coupled deconvolution for frequency extrapolation of electromagnetic solutions with matrix pencil method
(IEEE, 2005)Matrix pencil method (MPM) has been widely used to estimate the parameters of complexexponential based models. An important application is the extrapolation of the frequencydomain solutions of electromagnetic problems. ... 
Çokyollu kanal parametre kestirimi için yeni bir dizilim sinyal işleme tekniği
(IEEE, 200706)Bu bildiride, çarpraz belirsizlik işlevinin kullanıldığı yeni bir dizilim sinyal işleme tekniği önerilmektedir. Geliştirilen teknik bir algılayıcı dizilimine gelen sinyallerden herbirinin geliş yönünü (GY), zaman gecikmesini ... 
Development of new array signal processing techniques using swarm intelligence
(Bilkent University, 2010)In this thesis, novel array signal processing techniques are proposed for identifi cation of multipath communication channels based on cross ambiguity function (CAF) calculation, swarm intelligence and compressed sensing ... 
Discriminative finegrained mixing for adaptive compression of data streams
(Institute of Electrical and Electronics Engineers, 2014)This paper introduces an adaptive compression algorithm for transfer of data streams across operators in stream processing systems. The algorithm is adaptive in the sense that it can adjust the amount of compression applied ...