William Orchard-Hays

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William Orchard-Hays (born September 13, 1918 , † November 2, 1989 in Silver Spring (Maryland) ) was an American mathematician and computer scientist who dealt with mathematical optimization , computer science and operations research .

Orchard-Hays was in the US Air Force during World War II and then studied mathematics at the University of California, Los Angeles (UCLA) with a bachelor's degree in 1951. He then went to the Rand Corporation as a programmer , where he worked with George in 1952 Dantzig started on the software implementation and adaptation of his Simplex method in linear programming (LP). In 1954 the first commercially available LP code was ready. It ran on an IBM 701 . He worked reliably on problems up to about 100 restrictions.

Then Orchard-Hays continued to improve programs for linear optimization and designed new algorithms. For example, he was a consultant at IBM in the mid-1960s for their Mathematical Programming System MPS / 360. In the mid-1970s he developed the SESAME software system with the DATAMAT programming language for the National Bureau of Economic Research and then worked on applications with this system for four and a half years at the International Institute for Applied Systems Analysis (IIASA) in Laxenburg . From 1980 he worked for the Department of Energy (DOE) in the USA on the development of the software system HLP30 (with data management language MDMS30) and revised the software of their National Coal Model. In 1989 he retired.

With the advent of the personal computer, he also developed software implementations for linear optimization (BOSC LP-PC) for this purpose.

He was married and had 11 children.

The Mathematical Optimization Society awards the Beale Orchard Hays Prize in Mathematical Optimization, which is named after him and Martin Beale .

Fonts

  • Advanced Linear Programming Computing Techniques, McGraw Hill 1968
  • History of Mathematical Programming Systems. IEEE Annals of the History of Computing, Volume 6, 1984, pp. 296-312

Web links

Individual evidence

  1. ^ Beal Orchard Hays Prize
personal data
SURNAME Orchard-Hays, William
BRIEF DESCRIPTION American mathematician computer scientist
DATE OF BIRTH September 13, 1918
DATE OF DEATH November 2nd 1989
Place of death Silver Spring (Maryland)