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 ?
She demonstrates her fallen archness by crafting a title that reminds everybody of "What's Eating Gilbert Grape?
While her tone lacks the archness from which some situations or dialogues could benefit, she succeeds in making Wollie affable and credible, a protagonist readers can actively root for.
In the case of Autobiography, the naming gives artistic significance and credibility to a broken miscellany; however it's difficult for a reader not to read into the action something of the writer's archness as he draws a person's attention to a motley of insignificance that warrants such a conventionalised label.
That requires quite a workout, given the countless sentences which go astray in mid-course, mismatched subjects and verbs, belabored points, and an irritating archness of style.
Despite his narrator's archness, there is no cynicism in his work, not at the deep tissue level, anyway.
1999 marked the moment at which bullet time's heretofore itinerant troupe of signifiers stabilized within a particular narrative and stylistic frame, corralling its meanings and kicking off a chain of citation that would end, four years later, in archness and decay.
Stefanie Powers, her bone-dry archness suggestive of a less caustic Bea Arthur, effortlessly dispatches the ballet's American patroness and manager.
Author's Note: When used in this context, archness connotes
Despite the narrator's characterised combination of artlessness, archness and occasional light mockery, it is held that, so far as it goes, the book's factual matter can be taken at face value.
4) As she tells her readers with considerable archness, the shared race of slaves and slaveowners, or the provenance of African Americans from one region, like the North, does not correspond with better behavior:
Her down-to-earthness is a world away from the lofty archness of someone like Dame Shirley Bassey, say.