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Computing Downwards Accumulations on Trees Quickly

Jeremy Gibbons

Abstract

Downwards accumulations on binary trees are essentially functions which pass information down a tree. Under certain conditions, these accumulations are both `efficient' (computable in a functional style in parallel time proportional to the depth of the tree) and `manipulable'. In this paper, we show that these conditions do in fact yield a stronger conclusion: the accumulation can be computed in parallel time proportional to the logarithm of the depth of the tree, on a CREW PRAM machine.

Details

Address

Brisbane

Book Title

16th Australian Computer Science Conference

Editor

Gopal Gupta and George Mohay and Rodney Topor

Month

feb

Pages

685–691

Year

1993

Links

BibTeX

Revised version

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