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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 classic literature ?
Hawley, thrusting his hands into his pockets, and pushing a little forward under the archway.
It was mainly what we know, including the fact about Will Ladislaw, with some local color and circumstance added: it was what Bulstrode had dreaded the betrayal of--and hoped to have buried forever with the corpse of Raffles--it was that haunting ghost of his earlier life which as he rode past the archway of the Green Dragon he was trusting that Providence had delivered him from.
He rose to approach the archway, and stopped at his first step forward.
This time he succeeded in reaching the archway, and disappeared behind the curtains of the picture-gallery.
The crowd had only the satisfaction of accompanying Oliver through two or three streets, and down a place called Mutton Hill, when he was led beneath a low archway, and up a dirty court, into this dispensary of summary justice, by the back way.
When they reached the low archway which forms the entrance to the inn, Perker was detained a few moments parlaying with the coachman about the fare and the change; and Mr.
Pickwick remembered to have very often observed them lounging under the archway when he had been walking past; and his curiosity was quite excited to know to what branch of the profession these dingy-looking loungers could possibly belong.
In the shadow of an archway nearly opposite, leading to one of the many passages which diverged from the main street, there lingered one, who, having taken up his position when the twilight first came on, still maintained it with undiminished patience, and leaning against the wall with the manner of a person who had a long time to wait, and being well used to it was quite resigned, scarcely changed his attitude for the hour together.
Stand where you would, or change your position as often as you pleased, you were always a centre from which radiated a dozen long archways and colonnades that lost themselves in distance and the sombre twilight of the place.
Mark were visible, in dark closely packed rows, roosting in the archways of the great entrance doors.
A few steps onward brought me to a promontory on the shore, and revealed the brown archways of the decoy on the opposite bank.
In order to do its part, Archway added a benefit to its Unlimited Corporate License that allows subscribers to donate an Unlimited Campus License to the college or high school of their choice.