• The iterative proportional fitting procedure (IPF or IPFP, also known as biproportional fitting or biproportion in statistics or economics (input-output...
    22 KB (3,463 words) - 12:56, 5 January 2025
  • Raking (also called "raking ratio estimation" or "iterative proportional fitting") is the statistical process of adjusting data sample weights of a contingency...
    1 KB (80 words) - 11:40, 8 March 2024
  • Thumbnail for Proportional representation
    mathematical methods to attain biproportionality. One method is called iterative proportional fitting (IPF). It was proposed for elections by the mathematician Michel...
    170 KB (17,213 words) - 06:40, 15 February 2025
  • ras, a SunOS raster format RAS algorithm, an algorithm for iterative proportional fitting in economics RAS supergroup or SAR supergroup, a plant clade...
    3 KB (462 words) - 04:03, 28 January 2025
  • Ontario, Canada Ipf (mountain), a mountain in southern Germany Iterative proportional fitting, estimates values in an N-dimensional matrix YPF, an Argentinian...
    1 KB (183 words) - 20:25, 9 July 2024
  • questionnaires, and documents. Data cleansing Data editing Iterative proportional fitting for a method of data enhancement applied in statistics, economics...
    3 KB (433 words) - 08:52, 11 June 2023
  • analyzed its convergence. This is essentially the same as the Iterative proportional fitting algorithm, well known in survey statistics. The following analogue...
    5 KB (707 words) - 01:48, 29 January 2025
  • response theory Item-total correlation Item tree analysis Iterative proportional fitting Iteratively reweighted least squares Itô calculus Itô isometry Itô's...
    87 KB (8,285 words) - 04:29, 7 October 2024
  • Tables is a tool for generating and printing crosstabs. The iterative proportional fitting procedure essentially manipulates contingency tables to match...
    15 KB (1,945 words) - 20:16, 30 October 2023
  • Thumbnail for W. Edwards Deming
    1940 U.S. Census, formulating the Deming-Stephan algorithm for iterative proportional fitting in the process. During World War II, Deming was a member of...
    50 KB (6,128 words) - 16:37, 30 January 2025
  • condition. Data editing Data management Data mining Database repair Iterative proportional fitting Record linkage Single customer view Triangulation (social science)...
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    there are zero entries in matrix Z {\displaystyle Z} . The iterative proportional fitting procedure (IPF) is also a function: IPF ( Z , Y e m T , e n...
    37 KB (5,368 words) - 17:33, 8 February 2024
  • Thumbnail for Least squares
    closed-form solution. The nonlinear problem is usually solved by iterative refinement; at each iteration the system is approximated by a linear one, and thus the...
    39 KB (5,659 words) - 04:46, 5 January 2025
  • time consuming to be evaluate repeatedly, as it is often the case in iterative minimization algorithms. In the Linear Template Fit, the residuals are...
    34 KB (5,374 words) - 18:47, 15 September 2024
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    {\displaystyle K_{i},K_{j}} = balancing factors solved iteratively. See Iterative proportional fitting. f {\displaystyle f} = distance decay factor, as in...
    24 KB (4,107 words) - 11:40, 14 August 2020
  • his death. Together with W. Edwards Deming, he introduced the iterative proportional fitting algorithm to estimate cell probabilities in contingency tables...
    3 KB (262 words) - 14:19, 9 February 2025
  • Thumbnail for Transportation forecasting
    Older models include the Fratar or Furness method, a type of iterative proportional fitting. Mode choice computes the proportion of trips between each origin...
    16 KB (2,052 words) - 10:58, 26 September 2024
  • Thumbnail for Principal component analysis
    compute the first few PCs. The non-linear iterative partial least squares (NIPALS) algorithm updates iterative approximations to the leading scores and...
    115 KB (14,450 words) - 19:54, 13 February 2025
  • data editing Data cleansing Data pre-processing Data wrangling Iterative proportional fitting Triangulation (social science) the errors that have a substantial...
    9 KB (1,099 words) - 05:37, 30 December 2024
  • Thumbnail for Nonlinear regression
    linear regression of ln(y) on x, a computation that does not require iterative optimization. However, use of a nonlinear transformation requires caution...
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  • In statistics, the ordered logit model or proportional odds logistic regression is an ordinal regression model—that is, a regression model for ordinal...
    10 KB (1,306 words) - 01:07, 28 December 2024
  • Thumbnail for Expectation–maximization algorithm
    In statistics, an expectation–maximization (EM) algorithm is an iterative method to find (local) maximum likelihood or maximum a posteriori (MAP) estimates...
    50 KB (7,512 words) - 02:45, 11 February 2025
  • packages. Other approaches, including Bayesian regression and least squares fitting to variance stabilized responses, have been developed. Ordinary linear...
    31 KB (4,232 words) - 21:22, 3 December 2024
  • method for unconstrained mathematical optimization. It is a first-order iterative algorithm for minimizing a differentiable multivariate function. The idea...
    38 KB (5,371 words) - 13:41, 7 February 2025
  • Thumbnail for Polynomial regression
    weighted least squares estimator may be used to account for that. Curve fitting Line regression Local polynomial regression Polynomial and rational function...
    16 KB (2,426 words) - 05:32, 14 November 2024
  • algorithms as iterative functional gradient descent algorithms. That is, algorithms that optimize a cost function over function space by iteratively choosing...
    28 KB (4,244 words) - 15:22, 12 February 2025
  • Thumbnail for Interpolation
    methods by directly addressing constraints analytically and avoiding iterative procedures, although it cannot currently handle inequality constraints...
    22 KB (2,926 words) - 04:45, 12 December 2024
  • equation. While the Colebrook–White relation is, in the general case, an iterative method, the Swamee–Jain equation allows fD to be found directly for full...
    40 KB (5,142 words) - 22:15, 10 January 2025
  • Thumbnail for Naive Bayes classifier
    closed-form expression,: 718  which takes linear time, rather than by expensive iterative approximation as used for many other types of classifiers. In the statistics...
    36 KB (5,525 words) - 02:47, 5 February 2025
  • Thumbnail for Savitzky–Golay filter
    floating point numbers, in an iterative manner. The precision of the floating-point numbers is gradually increased in each iteration, by using GNU MPFR. Once...
    53 KB (8,147 words) - 17:58, 26 December 2024