• least squares function approximation applies the principle of least squares to function approximation, by means of a weighted sum of other functions....
    6 KB (945 words) - 01:46, 13 December 2023
  • Thumbnail for Function approximation
    ISSN 2192-6360. S2CID 53715158. Approximation theory Fitness approximation Kriging Least squares (function approximation) Radial basis function network v t e v t e...
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  • Thumbnail for Least squares
    In regression analysis, least squares is a parameter estimation method in which the sum of the squares of the residuals (a residual being the difference...
    39 KB (5,601 words) - 14:31, 24 April 2025
  • Linear least squares (LLS) is the least squares approximation of linear functions to data. It is a set of formulations for solving statistical problems...
    34 KB (5,375 words) - 12:13, 4 May 2025
  • Non-linear least squares is the form of least squares analysis used to fit a set of m observations with a model that is non-linear in n unknown parameters...
    28 KB (4,539 words) - 08:58, 21 March 2025
  • Thumbnail for Von Neumann's elephant
    mathematics. A 1975 attempt through least-squares function approximation required dozens of terms. An approximation using four parameters was found by...
    5 KB (657 words) - 06:53, 4 April 2025
  • false facts to be true Least squares – Approximation method in statistics Linear approximation – Approximation of a function by its tangent line at a...
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  • Thumbnail for Total least squares
    models. The total least squares approximation of the data is generically equivalent to the best, in the Frobenius norm, low-rank approximation of the data matrix...
    20 KB (3,298 words) - 16:34, 28 October 2024
  • Moving least squares is a method of reconstructing continuous functions from a set of unorganized point samples via the calculation of a weighted least squares...
    5 KB (632 words) - 19:40, 6 March 2025
  • measures smoothness of a function Least squares (function approximation) — minimizes the error in the L2-norm Minimax approximation algorithm — minimizes...
    70 KB (8,335 words) - 20:20, 17 April 2025
  • may be used as the approximation, but a least-squares regression line intersecting the arc will be more accurate. A least-squares regression line minimizes...
    71 KB (12,354 words) - 04:28, 27 April 2025
  • Thumbnail for Ordinary least squares
    effects of a linear function of a set of explanatory variables) by the principle of least squares: minimizing the sum of the squares of the differences...
    65 KB (9,135 words) - 15:20, 12 March 2025
  • curve approximation" (PDF). Computer Aided Geometric Design. 11 (3): 289. doi:10.1016/0167-8396(94)90004-3. Golovchenko, Nikolai. "Least-squares Fit of...
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  • Discontinuous linear map Linear least squares "The term linear function means a linear form in some textbooks and an affine function in others." Vaserstein 2006...
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  • Thumbnail for Least-squares spectral analysis
    Least-squares spectral analysis (LSSA) is a method of estimating a frequency spectrum based on a least-squares fit of sinusoids to data samples, similar...
    28 KB (3,354 words) - 11:45, 30 May 2024
  • of the squares of the errors—that is, the average squared difference between the estimated values and the true value. MSE is a risk function, corresponding...
    24 KB (3,861 words) - 23:11, 5 April 2025
  • Low-rank approximation is closely related to numerous other techniques, including principal component analysis, factor analysis, total least squares, latent...
    22 KB (3,884 words) - 11:38, 8 April 2025
  • In mathematical analysis, the Weierstrass approximation theorem states that every continuous function defined on a closed interval [a, b] can be uniformly...
    27 KB (3,234 words) - 03:10, 20 April 2025
  • Thumbnail for Cobb–Douglas production function
    Cobb–Douglas function. In some cases this simultaneous equation bias doesn't appear. However, it is apparent when least squares asymptotic approximations are used...
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  • Thumbnail for Gamma function
    Pseudogamma function Hadamard's gamma function Inverse gamma function Lanczos approximation Multiple gamma function Multivariate gamma function p-adic gamma...
    90 KB (13,517 words) - 19:06, 28 March 2025
  • Thumbnail for Birthday problem
    This is a result of the good approximation that an event with ⁠1/k⁠ probability will have a ⁠1/2⁠ chance of occurring at least once if it is repeated k ln...
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  • Support vector machine Radial basis function kernel Regularized least squares Andreas Müller (2012). Kernel Approximations for Efficient SVMs (and other feature...
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  • functions via an iterative recurrence formula much like the one for Newton's method, except using approximations of the derivatives of the functions in...
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  • correlated with the error term (endogenous), in which case ordinary least squares and ANOVA give biased results. A valid instrument induces changes in...
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  • Least mean squares (LMS) algorithms are a class of adaptive filter used to mimic a desired filter by finding the filter coefficients that relate to producing...
    16 KB (3,050 words) - 04:52, 8 April 2025
  • Thumbnail for Square root
    at least as old as the Sulba Sutras, dated around 800–500 BC (possibly much earlier). A method for finding very good approximations to the square roots...
    48 KB (6,200 words) - 03:23, 23 April 2025
  • Stochastic gradient descent (category Statistical approximations)
    objective function with suitable smoothness properties (e.g. differentiable or subdifferentiable). It can be regarded as a stochastic approximation of gradient...
    52 KB (7,016 words) - 09:28, 13 April 2025
  • Thumbnail for Chi-squared distribution
    distribution of a sum of the squares of k {\displaystyle k} independent standard normal random variables. The chi-squared distribution χ k 2 {\displaystyle...
    45 KB (6,817 words) - 10:25, 19 March 2025
  • Thumbnail for Polynomial regression
    estimation, since the regression function is linear in terms of the unknown parameters β0, β1, .... Therefore, for least squares analysis, the computational...
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  • radial basis functions of the inputs and neuron parameters. Radial basis function networks have many uses, including function approximation, time series...
    30 KB (4,864 words) - 08:12, 28 April 2025