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 Web Risultati 1 - 50 su circa 1.340.000 per autocorrelation. (0,19 secondi) 

Autocorrelation - Wikipedia, the free encyclopedia

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A plot showing 100 random numbers with a "hidden" sine function, and an autocorrelation (correlogram) of the series on the bottom. ...
en.wikipedia.org/wiki/Autocorrelation - 42k - Copia cache - Pagine simili

Autocorrelation technique - Wikipedia, the free encyclopedia

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The autocorrelation technique is a method for estimating the dominating frequency in a complex signal, as well as its variance. ...
en.wikipedia.org/wiki/Autocorrelation_technique - 19k - Copia cache - Pagine simili
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1.3.5.12. Autocorrelation

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Although the time variable, X, is not used in the formula for autocorrelation, the assumption is that the observations are equi-spaced. ...
www.itl.nist.gov/div898/handbook/eda/section3/eda35c.htm - 9k - Copia cache - Pagine simili

1.3.3.1. Autocorrelation Plot

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In addition, autocorrelation plots are used in the model identification stage for Box-Jenkins autoregressive, moving average time series models. ...
www.itl.nist.gov/div898/handbook/eda/section3/autocopl.htm - 12k - Copia cache - Pagine simili
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Autocorrelation -- from Wolfram MathWorld

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be a periodic sequence, then the autocorrelation of the sequences, sometimes called the periodic autocorrelation (Zwillinger 1995, p. 223), is the sequence ...
mathworld.wolfram.com/Autocorrelation.html - 28k - Copia cache - Pagine simili

What is autocorrelation?

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14 feb 2006 ... Autocorrelation is the correlation of a signal with itself (Parr 1999). This is unlike cross-correlation, which is the correlation of two ...
cnx.org/content/m13391/latest/ - 18k - Copia cache - Pagine simili

Autocorrelation of Random Processes

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Summary: The module will explain Autocorrelation and its function and properties. Also, examples will be provided to help you step through some of the more ...
cnx.org/content/m10676/latest/ - 58k - Copia cache - Pagine simili
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Ritter's Noise Glossary

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The autocorrelation result is typically a correlation computed for every possible ... The autocorrelation values are computed here using FFT techniques. ...
www.ciphersbyritter.com/NOISE/NOISGLOS.HTM - 29k - Copia cache - Pagine simili

Investment Performance Analysis & Risk Management - Autocorrelation

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In a performance context, positive autocorrelation of period returns can result in ... Negative autocorrelation can result in a positive (negative) relative ...
www.andreassteiner.net/performanceanalysis/?Risk_Measurement:Advanced_Topics:Autocorrelation - 24k - Copia cache - Pagine simili

Autocorrelation « Open Mind

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22 mar 2008 ... I’d like to discuss how that trend rate is often estimated, and the effect of autocorrelation on that estimate. If you already know all the ...
tamino.wordpress.com/2008/03/22/autocorrelation/ - 260k - Copia cache - Pagine simili

ECONOMETRICS: AN APPLIED APPROACH - Chapter 12

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Chapter 12: Autocorrelation. Related links:. Online Statistical Calculators and Tables: This page contains links to online calculators that compute either ...
www.oswego.edu/~kane/econometrics/chap12.htm - 2k - Copia cache - Pagine simili

Autocorrelation Display

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The ACORR analyzer displays the autocorrelation function. The x- axis is the time as milliseconds. The y –axis is the correlation. ...
www.skysweep.com/autocorrelation_display.htm - 6k - Copia cache - Pagine simili

Swamp Optics--Autocorrelation Tutorial

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The intensity autocorrelation was the first attempt to measure an ... This is the intensity autocorrelation. The superscript (2) implies that it's a ...
www.swampoptics.com/tutorials_autocorrelation.htm - 14k - Copia cache - Pagine simili

SHAZAM Testing for Autocorrelation

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The following options on the OLS command can be used to obtain test statistics for detecting the presence of autocorrelation in the residuals. ...
shazam.econ.ubc.ca/intro/testauto.htm - 11k - Copia cache - Pagine simili

Autocorrelation

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Autocorrelation - Definition of Autocorrelation on Investopedia - A mathematical representation of the degree of similarity between a given time series and ...
www.investopedia.com/terms/a/autocorrelation.asp - 30k - Copia cache - Pagine simili
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Trading Autocorrelation May, 2003

Formato file: PDF/Adobe Acrobat - Versione HTML
Some of these contracts on autocorrelation have important im- ..... While equities typically display low autocorrelation, many com- ...
www.math.nyu.edu/research/carrp/papers/pdf/tradingmeanreversionoh.pdf - Pagine simili

Convolution and Autocorrelation

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Here the difference between autocorrelation and convolution is illustrated by considering the following function which is a unit ramp cut off at t = 1. ...
cnyack.homestead.com/files/aconv/convau1.htm - 4k - Copia cache - Pagine simili

Autocorrelation | DSPRelated.com

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4 gen 2005 ... Hi: im interested in finding autocorrelation function for a whole signal ... construction of a signal given its autocorrelation sequence ...
www.dsprelated.com/comp.dsp/keyword/Autocorrelation.php - 43k - Copia cache - Pagine simili

autocorrelation

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Frequently, autocorrelation refers to correlations among adjacent time periods (lag 1 autocorrelation). There may be an autocorrelation for a time lag of ...
armstrong.wharton.upenn.edu/dictionary/definitions/autocorrelation.html - 2k - Copia cache - Pagine simili

Autocorrelation Estimation

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and then estimate the autocorrelation matrix of the residuals. ... The difference between the autocorrelation of the error and the autocorrelation of the ...
www.fmrib.ox.ac.uk/analysis/techrep/tr01mw1/tr01mw1/node7.html - 13k - Copia cache - Pagine simili

Cross Correlation

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When the correlation is calculated between a series and a lagged version of itself it is called autocorrelation. A high correlation is likely to indicate a ...
local.wasp.uwa.edu.au/~pbourke/other/correlate/ - 13k - Copia cache - Pagine simili
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Lecture notes on Waves/Spectra Noise, Correlations and ….

Formato file: PDF/Adobe Acrobat - Versione HTML
The autocorrelation function tells us the time interval over which a correlation in the ... autocorrelation function there is only time history of data. ...
coke.physics.ucla.edu/laptag/Lectures/Lecture5.pdf - Pagine simili

GIS Dictionary - ESRI Support

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See Also : correlation, spatial autocorrelation, Tobler's First Law of Geography ... Temporal data is said to exhibit serial autocorrelation when values ...
support.esri.com/index.cfm?fa=knowledgebase.gisDictionary.search&searchTerm=autocorrelation - 28k - Copia cache - Pagine simili

Autocorrelation (statistics) - Mathematics Dictionary and Research ...

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Autocorrelation - Autocorrelation is a mathematical tool used frequently in signal processing for analysing functions or series.
www.123exp-math.com/t/01704053490/ - 13k - Copia cache - Pagine simili

FAQ: Testing for panel-level heteroskedasticity and autocorrelation

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Iterated GLS with autocorrelation does not produce the maximum likehood estimates, so we cannot use the likelihood-ratio test procedure, ...
www.stata.com/support/faqs/stat/panel.html - 17k - Copia cache - Pagine simili

Convex optimization problems involving finite autocorrelation ...

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Autocorrelation constraints in optimization problems are often approximated by sampling the corresponding power spectral density, which results in a set of ...
www.ee.ucla.edu/~vandenbe/alv01b.htm - 6k - Copia cache - Pagine simili

Compute autocorrelation of vector inputs - Simulink

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The Autocorrelation block computes the autocorrelation along each column of a frame-based input, and computes along the first dimension of an N-D ...
www.mathworks.com/access/helpdesk/help/toolbox/dspblks/ref/autocorrelation.html - 20k - Copia cache - Pagine simili

BioMed Central | Full text | Autocorrelation analysis reveals ...

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In order to assess the prevalence of this effect and better understand its origins, we applied an autocorrelation analysis of the relationship between ...
www.biomedcentral.com/1471-2164/8/164 - 98k - Copia cache - Pagine simili

Multivariate Statistics - Spatial Autocorrelation

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Spatial autocorrelation is an assessment of the correlation of a variable in reference to spatial location of the variable.
www.pfc.forestry.ca/profiles/wulder/mvstats/spatial_e.html - 16k - Copia cache - Pagine simili

Autocorrelation

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The cross-correlation of a signal with itself gives its autocorrelation: ... is real, its autocorrelation is real and even (symmetric about lag zero). ...
ccrma-www.stanford.edu/~jos/mdft/Autocorrelation.html - 14k - Copia cache - Pagine simili

Online Econometrics Textbook - Regression Extensions - Assumption ...

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Sometimes lagged endogenous and/or exogenous variables can be introduced in order to reduce the autocorrelation problem. This is a quite flexible tool with ...
www.xycoon.com/autocorrelation.htm - 31k - Copia cache - Pagine simili

Autocorrelation plots

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Autocorrelation plots. You will then be given the option of producing a plot of the ... figure528 Figure 4: CODA autocorrelation plots for the line example ...
www.mrc-bsu.cam.ac.uk/bugs/documentation/coda03/node32.html - 3k - Copia cache - Pagine simili

Isolating Spatial Autocorrelation, Aggregation Bias, and ...

For one, all models of spatial autocorrelation introduced in AC’s Section 5 ... fects of spatial autocorrelation, the article contains no information about ...
pan.oxfordjournals.org/cgi/reprint/10/3/298.pdf - Pagine simili

Portfolio return autocorrelation

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Downloadable (with restrictions)! Author(s): Mech, Timothy S.. 1993 Abstract: No abstract is available for this item.
ideas.repec.org/a/eee/jfinec/v34y1993i3p307-344.html - 12k - Copia cache - Pagine simili

A Simple, Positive Semi-definite, Heteroskedasticity and ...

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A Simple, Positive Semi-definite, Heteroskedasticity and Autocorrelation Consistent Covariance Matrix. Author info | Abstract | Publisher info | Download ...
ideas.repec.org/a/ecm/emetrp/v55y1987i3p703-08.html - 11k - Copia cache - Pagine simili

Momentum and Autocorrelation in Stock Returns

Empirically the autocorrelation patterns in returns are inconsistent with ..... tied to the autocorrelation of returns, a fact that I will use later. ...
rfs.oxfordjournals.org/cgi/reprint/15/2/533.pdf - Pagine simili
[PPT]

Spatial Autocorrelation

Formato file: Microsoft Powerpoint - Versione HTML
Most statistics are based on the assumption that the values of observations in each sample are independent of one another; Positive spatial autocorrelation ...
www.css.cornell.edu/courses/620/lecture9.ppt - Pagine simili

The Inverse Autocorrelation Function

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The sample inverse autocorrelation function (SIACF) plays much the same role in ARIMA modeling as the sample partial autocorrelation function (SPACF) but ...
www.technion.ac.il/docs/sas/ets/chap7/sect25.htm - 6k - Copia cache - Pagine simili
[PDF]

An Introduction to Spatial Autocorrelation Analysis with GeoDa Luc ...

Formato file: PDF/Adobe Acrobat - Versione HTML
The first step in the analysis of spatial autocorrelation is to .... autocorrelation. GeoDa computes this on the fly, so you don’t have to create a spatial ...
www.sal.uiuc.edu/stuff/stuff-sum/pdf/spauto.pdf - Pagine simili

Leveraging Relational Autocorrelation with Latent Group Models

formally, autocorrelation is defined with respect to a set of. related instance pairs P ... Current collective models, which model autocorrelation ...
ieeexplore.ieee.org/iel5/10470/33217/01565695.pdf?arnumber=1565695 - Pagine simili

New nonbinary sequences with ideal two-level autocorrelation ...

The sequences have two-level ideal autocorrelation and .... has an ideal two-level autocorrelation, where all indexes of the. ’s are taken ...
ieeexplore.ieee.org/iel5/18/22335/01042297.pdf?arnumber=1042297 - Pagine simili

Bores Signal Processing - Introduction to DSP - time domain ...

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Autocorrelation (correlating a signal with itself) can be used to extract a ... The separation of signal from noise using autocorrelation works because the ...
www.bores.com/courses/intro/time/2_auto.htm - 5k - Copia cache - Pagine simili

Autocorrelation of factors and model validation

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Spatial autocorrelation is a particular case of autocorrelation. Temporal autocorrelation is also a very common phenomenon in ecology. ...
www.ento.vt.edu/~sharov/PopEcol/lec4/autocor.html - 16k - Copia cache - Pagine simili

Publications about 'autocorrelation'

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SPM is a Matlab software package implementing Statistical Parametric Mapping for neuroimaging data.
www.fil.ion.ucl.ac.uk/spm/doc/biblio/Keyword/AUTOCORRELATION.html - 10k - Copia cache - Pagine simili

Autocorrelation

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Correlation of a variable with itself, whenever considering observations with a gap in time (temporal autocorrelation) or in space (spatial autocorrelation) ...
www.hypergeo.eu/article.php3?id_article=223 - 16k - Copia cache - Pagine simili

Noise autocorrelation spectroscopy with coherent Raman scattering ...

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9 dic 2007 ... The anti-Stokes spectrum is detected by the CCD-based spectrometer, and the autocorrelation is calculated by the computer. ...
www.nature.com/nphys/journal/v4/n2/full/nphys809.html - Pagine simili

Autocorrelation of Strings A comment on entries A005434 and ...

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This binary vector is called the autocorrelation of the word and has the same length as the word. Not all possible binary vector of length n are ...
www.lirmm.fr/~rivals/RESEARCH/PERIOD/ - 34k - Copia cache - Pagine simili

Spatial Autocorrelation Analysis of Migration and Selection ...

We test various assumptions necessary for the interpretation of spatial autocorrelation analysis of gene frequency surfaces, using simulations of Wright's ...
www.genetics.org/cgi/content/abstract/121/4/845 - Pagine simili

autocorrelation range

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Program: Autocorrelation-range EIS entry: %N A005434 Correlations of length n. This program computes the kappa sequence of [Guibas, Odlyzko 1981] here ...
www.mathematik.uni-bielefeld.de/~sillke/SEQUENCES/autocorrelation-range.c - 13k - Copia cache - Pagine simili

[math-ph/0208007] Autocorrelation of Random Matrix Polynomials

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We calculate the autocorrelation functions (or shifted moments) of the characteristic polynomials of matrices drawn uniformly with respect to Haar measure ...
arxiv.org/abs/math-ph/0208007 - 5k - Copia cache - Pagine simili



 

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