Deming–Stephan* algorithm

Variant: iterative proportional fitting An algorithm, given by Deming and Stephan in 1940, that can be used to fit log-linear models to contingency tables. The algorithm matches marginal totals by using iterative scaling of a table whose entries are initially all equal to unity. Essentially the same algorithm allows one to revise sample margins to preserve known population values: depending on context this is known as the Cross–Fratar procedure, raking, or structure-preserving estimation (SPREE).

*Frederick Franklin Stephan

(1903–71; b. Chicago, IL; d. Princeton, NJ) American demographer. A graduate of U Illinois (BA, 1924), Stephan gained his MA from U Chicago (1926) and joined the faculty of U Pittsburgh in 1927. After a spell at Cornell U, he joined the faculty at Princeton U in 1947, initially as Professor of Social Statistics in the sociology department, subsequently transferring to the statistics department. He was Editor of the Journal of the American Statistical Association from 1935 to 1940. He collaborated with Deming on the 1940 paper that introduced the Deming–Stephan algorithm. He was President of the ASA in 1966.

他的訃文是由 Deming 博士撰寫的


本詞條出自

Oxford Dictionary of Statistics. A Dictionary of Statistics. Second edition revised. Copyright © Oxford University Press, 2008. All rights reserved.