ARCH

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ARCH

Autoregressive Conditional Heteroskedasticity

A statistical measure of the average error between a best fit line and actual data that uses past data to predict future performance. General Autoaggressive Conditional Heteroskedasticity is the most common way of doing this. See also: Fractal Distribution.
References in periodicals archive ?
Recently progress in hand surgery needs a precise knowledge of these arterial arches.
The objective of this study is to evaluate the morphology of the palmar arterial arches and its variation if present so that it may help Anatomists, Micro vascular surgeons & orthopedic surgeons.
Normal pattern of palmar arterial arches and its variation were observed.
In 2008, Anupama investigated the plantar arterial arch in 50 formalin fixed cadavers, and confirmed the findings of the above mentioned authors (Moore et al.; Ozer et al) and had not noted any further differences.
Therefore, the aims of the study were to: a) re-examine and describe the morphology of the plantar arterial arch, b) illustrate the morphometry of the plantar arterial arch, in particular, the length, diameter, form of the arch, and document its variations, c) determine the dominant contributors to the plantar arch, and d) compare the plantar arterial arch with regards to side symmetry and sex.
The plantar arterial arch was dissected in 40 lower limbs (20 right and 20 left; 24 male, 16 female) in adult cadaveric specimens.