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Tom Boothby: Implement Pippenger's Algorithm for multivariate polynomial evaluation
Pippenger's Algorithm is a method to compute a sequence of multiple products of multiple inputs. I intend to use this to (drastically, in some cases) speed up the evaluation of multivariate polynomials over arbitrary rings.
[http://cr.yp.to/papers/pippenger.pdf Paper]
[http://sage.math.washington.edu/sprint/pippenger.sws Worksheet] with my progress so far.
Skip to page 13. I've already implemented:
- Direct computation (option 1 in the paper)
- Input partitioning (option 2)
- Most of input clumping (option 3)
I need:
- Output partitioning (option 4)
- Output clumping (excercise left to reader)
Some insight as to why DJB thinks that one can "quickly compute the parameter sequence given p, q. I'll bring a print copy of the 3 cites from Pippenger [34-36].
- The general case (not certain this is a reasonable goal for the amount of time we have)