Accelerating LP Algorithms.

by Bennett L. Fox

Purchase

Purchase Print Copy

 FormatList Price Price
Add to Cart Paperback5 pages $20.00 $16.00 20% Web Discount

A description of Winograd's new method of computing inner products and the improvement it makes possible in linear programming (LP), particularly with the revised simplex method. To price out in LP, the Winograd procedure requires half as many multiplications and about twice as many additions as the standard procedure. If multiplying takes three times as long as adding--fairly representative for current computers--the improvement is a dramatic 25 percent. Where a good starting basis is known, as often happens in Markov renewal programming, matrix inversion is about twice as fast as the usual scheme. 5 pp. Ref.

This report is part of the RAND Corporation Paper series. The paper was a product of the RAND Corporation from 1948 to 2003 that captured speeches, memorials, and derivative research, usually prepared on authors' own time and meant to be the scholarly or scientific contribution of individual authors to their professional fields. Papers were less formal than reports and did not require rigorous peer review.

Our mission to help improve policy and decisionmaking through research and analysis is enabled through our core values of quality and objectivity and our unwavering commitment to the highest level of integrity and ethical behavior. To help ensure our research and analysis are rigorous, objective, and nonpartisan, we subject our research publications to a robust and exacting quality-assurance process; avoid both the appearance and reality of financial and other conflicts of interest through staff training, project screening, and a policy of mandatory disclosure; and pursue transparency in our research engagements through our commitment to the open publication of our research findings and recommendations, disclosure of the source of funding of published research, and policies to ensure intellectual independence. For more information, visit www.rand.org/about/research-integrity.

The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.