Results 211 to 220 of about 7,808,961 (245)
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The hippocampus and long-term memory
Cognitive Neuroscience, 2022This special issue of Cognitive Neuroscience focuses on the roles of the hippocampus during long-term memory. A discussion paper by Tallman, Clark, and Smith (this issue) found that functional connectivity of the hippocampus with the parahippocampal cortex and fusiform gyrus decreased with memory age, providing support for systems consolidation ...
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TESTING FOR LONG MEMORY IN VOLATILITY
Econometric Theory, 2002We consider the asymptotic behavior of log-periodogram regression estimators of the memory parameter in long-memory stochastic volatility models, under the null hypothesis of short memory in volatility. We show that in this situation, if the periodogram is computed from the log squared returns, then the estimator is asymptotically normal, with the
Hurvich, Clifford M., Soulier, Philippe
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2008
Abstract Long memory models are statistical models that describe strong correlation or dependence across time series data. This kind of phenomenon is often referred to as “long memory” or “long-range dependence.” It refers to persisting correlation between distant observations in a time series. For scalar time series observed at equal
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Abstract Long memory models are statistical models that describe strong correlation or dependence across time series data. This kind of phenomenon is often referred to as “long memory” or “long-range dependence.” It refers to persisting correlation between distant observations in a time series. For scalar time series observed at equal
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Long Memory with Seasonal Effects
Statistical Inference for Stochastic Processes, 2000The paper is a review of some results on long memory processes having hyperbolically damped oscillating covariance function. There are two parametric families of seasonal long memory models proposed by Granger. One of them (FARMA models) is obtained by filtering a white noise using the transfer function \((1-z)^d\), the other is based on aggregation of
Oppenheim, G. +2 more
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Do long-memory models have long memory?
International Journal of Forecasting, 2000Abstract This paper examines the predictability memory of fractionally integrated ARMA processes. Very long memory is found for positively fractionally integrated processes with large positive AR parameters. However, negative AR parameters absorb, to a great extent, the memory generated by a positive fractional difference.
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LARCH, leverage, and long memory [PDF]
, 2003 We consider the long memory and leverage properties of a model for the conditional variance of an observable stationary sequence, where the conditional variance is the square of an inhomogeneous linear combination of past values of the observable sequence, with square summable weights.
Liudas Giraitis +3 more
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2013
My last meeting with Da Ruan was in Spring 2011 at Tsinghua University, where we were talking about his plan for the next visit to us in Fall 2011 for a bit longer stay on campus to have more chats and thoughts on some future research ideas. As a matter of fact, this last meeting had been one of many gatherings with him during 23 years since we first ...
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My last meeting with Da Ruan was in Spring 2011 at Tsinghua University, where we were talking about his plan for the next visit to us in Fall 2011 for a bit longer stay on campus to have more chats and thoughts on some future research ideas. As a matter of fact, this last meeting had been one of many gatherings with him during 23 years since we first ...
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Long memory and stochastic trend
Statistics & Probability Letters, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Leipus, Remigijus, Viano, Marie-Claude
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Immediate Memory for Faces: Long- or Short-Term Memory?
Quarterly Journal of Experimental Psychology, 1973Immediate recognition memory span and short-term forgetting for non-verbal stimuli (“unfamiliar faces”) were investigated in normal subjects and amnesic patients. Surnames were used as a verbal control. It was found that normal subjects had a reliable immediate recognition span of one for faces and that there was no decrement in performance in the ...
E K, Warrington, A M, Taylor
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