Gaussianity
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Non-Gaussianity — In physics, a non Gaussianity is the correction that modifies the expected Gaussian function estimate for the measurement of a physical quantity. In physical cosmology, the fluctuations of the cosmic microwave background are known to be… … Wikipedia
Alejandro Gangui — Nacimiento … Wikipedia Español
Wilkinson Microwave Anisotropy Probe — WMAP redirects here. WMAP may also refer to either radio station WXNC or WGSP FM. Wilkinson Microwave Anisotropy Probe General information NSSDC ID 2001 027A … Wikipedia
Independent component analysis — (ICA) is a computational method for separating a multivariate signal into additive subcomponents supposing the mutual statistical independence of the non Gaussian source signals. It is a special case of blind source separation. Definition When… … Wikipedia
FastICA — is an efficient and popular algorithm for independent component analysis invented by Aapo Hyvärinen at Helsinki University of Technology. The algorithm is based on a fixed point iteration scheme maximizing non Gaussianity as a measure of… … Wikipedia
Blind deconvolution — In applied mathematics, blind deconvolution is a deconvolution technique that permits recovery of the target object from set of blurred images in the presence of a poorly determined or unknown point spread function (PSF). Regular linear and non… … Wikipedia
Cosmic inflation — In physical cosmology, cosmic inflation is the idea that the universe passed through a phase of exponential expansion that was driven by a negative pressure vacuum energy density. [Liddle and Lyth (2000) and Mukhanov (2005) are recent cosmology… … Wikipedia
White noise — is a random signal (or process) with a flat power spectral density. In other words, the signal contains equal power within a fixed bandwidth at any center frequency. White noise draws its name from white light in which the power spectral density… … Wikipedia
Negentropy — The negentropy, also negative entropy or syntropy, of a living system is the entropy that it exports to keep its own entropy low; it lies at the intersection of entropy and life. The concept and phrase negative entropy were introduced by Erwin… … Wikipedia
Bicoherence — In mathematics, in the area of statistical analysis, bicoherence is a squared normalised version of the bispectrum. The bicoherence takes values bounded between 0 and 1, which make it a convenient measure for quantifying the extent of phase… … Wikipedia
