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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 ?
11 Thickness profiles along inner and outer (intrados and extrados) cross-section lines of the parison at stage [t.sub.5] (as reported in Fig.
In order to investigate the influence of the train speed on the failure characteristics of the joint bolts, three different impact loads obtained from different running speeds, 200 km/h, 250 km/h, and 300 km/h, are applied on the intrados of the target segment F2, respectively.
Afterwards, the holes are filled with high-strength hyperfluid mortar, injected by means of a pressurized pump, which is also cast below the intrados of the isolator, so as to obtain a perfectly planar bearing bed.
However, in the NC bending process of stainless steel 2169 tube with small diameter, the tube is subjected to tension stress on extrados, compression stress on intrados, and compression stress in the radial direction, respectively, so that there is thinning or even cracking on extrados and thickening or even wrinkling on intrados.
Induction bending as a technique is relatively quick and cheap, but induction bending can produce unwanted changes in geometry such as wall thinning at the extrados, wall thickening and wrinkling at the intrados, and steep transitions in wall thickness between tangent and bend.
The stress-strain history is different for the intrados and extrados positions of the pipe reel.