نتایج جستجو برای: jittered data

تعداد نتایج: 2410280  

Journal: :Comput. Graph. Forum 2002
Thomas Kollig Alexander Keller

Image synthesis often requires the Monte Carlo estimation of integrals. Based on a generalized concept of stratification we present an efficient sampling scheme that consistently outperforms previous techniques. This is achieved by assembling sampling patterns that are stratified in the sense of jittered sampling and N-rooks sampling at the same time. The faster convergence and improved anti-al...

Journal: :Journal of neurophysiology 2012
Kenneth E Hancock Yoojin Chung Bertrand Delgutte

Poor sensitivity to the interaural time difference (ITD) constrains the ability of human bilateral cochlear implant users to listen in everyday noisy acoustic environments. ITD sensitivity to periodic pulse trains degrades sharply with increasing pulse rate but can be restored at high pulse rates by jittering the interpulse intervals in a binaurally coherent manner (Laback and Majdak. Binaural ...

Journal: :Statistics & Probability Letters 2021

Herein, we address the expectations of frame potentials three types determinantal point processes(DPPs) on d-dimensional unit sphere: (i) spherical ensembles 2-dimensional sphere; (ii) harmonic sphere and (iii) jittered sampling processes sphere. The random configurations generated by such DPPs converge more rapidly towards finite norm tight frames(FUNTFs) than Poisson

1998
Russell Reed Seho Oh

Training with additive input noise (jitter) is a commonly used heuristic for improving generalization in layered perceptron artifiaal neural networks. One result of training with jitter is that the effective target function is the convolution of the actual target and the noise density. For many noise densities, this is approximately equivalent to a smoothing regularization. A drawback of traini...

2010
Keith R. Dalbey George N. Karystinos

Latin Hypercube Sampling (LHS) and Jittered Sampling (JS) both achieve better convergence than standard Monte Carlo Sampling (MCS) by using stratification to obtain a more uniform selection of samples, although LHS and JS use different stratification strategies. The “Koksma-Hlawka-like inequality” bounds the error in a computed mean in terms of the sample design’s discrepancy, which is a common...

Journal: :Results in Mathematics 2022

In this short note, we develop a local approximation for the log-ratio of multivariate hypergeometric probability mass function over corresponding multinomial function. conjunction with bounds from Carter (Ann Stat 30(3):708–730, 2002) and Ouimet (J Plan Inference 215:218–233, 2021) on total variation between law vector jittered by uniform $$(-\,1/2,1/2)^d$$ normal distribution, expansion is th...

Journal: :IEEE Trans. Acoustics, Speech, and Signal Processing 1985
Bayya Yegnanarayana J. Sreekanth Anand Rangarajan

A method of signal waveform estimation from an ensemble of jittered noisy measurements is presented. The method uses group delay functions to perform the ensemble averaging and thus overcomes the difficulty of computing the unwrapped phase function before averaging. We propose a new technique, called group delay processing, to estimate the signal waveform if only a single noisy measurement is a...

2004
Ceyhun Burak Akgül Bülent Sankur

We show that functional near infrared spectroscopy signals can monitor task-related cerebral hemodynamic response. We detect periodicities in the near infared spectroscopy signals and show that the estimated periods are consistent across multiple detectors and subjects, despite the jittered periodicity of the stimuli sequence that is used in a target categorization experiment. ©2003 American So...

Journal: :Optics express 2011
Pavel Křížek Ivan Raška Guy M Hagen

Fluorescence microscopy using single molecule imaging and localization (PALM, STORM, and similar approaches) has quickly been adopted as a convenient method for obtaining multicolor, 3D superresolution images of biological samples. Using an approach based on extensive Monte Carlo simulations, we examined the performance of various noise reducing filters required for the detection of candidate m...

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