• 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
    method of least squares is a mathematical optimization technique that aims to determine the best fit function by minimizing the sum of the squares of the...
    36 KB (5,243 words) - 23:15, 19 June 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
  • 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
  • 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
  • false facts to be true Least squares – Approximation method in statistics Linear approximation – Approximation of a function by its tangent line at a...
    14 KB (1,577 words) - 21:42, 31 May 2025
  • 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
  • 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
  • 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) - 00:20, 17 June 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...
    10 KB (1,211 words) - 10:47, 27 May 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 (12,341 words) - 21:15, 25 July 2025
  • 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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  • 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) - 12:45, 11 May 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 (9,098 words) - 10:14, 3 June 2025
  • Support vector machine Radial basis function kernel Regularized least squares Andreas Müller (2012). Kernel Approximations for Efficient SVMs (and other feature...
    14 KB (2,272 words) - 01:07, 20 June 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...
    53 KB (7,149 words) - 01:42, 31 July 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...
    53 KB (7,031 words) - 19:45, 12 July 2025
  • 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 Gamma function
    Pseudogamma function Hadamard's gamma function Inverse gamma function Lanczos approximation Multiple gamma function Multivariate gamma function p-adic gamma...
    90 KB (13,545 words) - 04:27, 29 July 2025
  • damped least-squares (DLS) method, is used to solve non-linear least squares problems. These minimization problems arise especially in least squares curve...
    22 KB (3,211 words) - 07:50, 26 April 2024
  • can be plugged into a traditional function approximation framework. One such method is least-squares approximation. Let Φ G = { V 1 G , … , V k G } {\displaystyle...
    7 KB (1,082 words) - 14:26, 13 December 2021
  • measures smoothness of a function Least squares (function approximation) — minimizes the error in the L2-norm Minimax approximation algorithm — minimizes...
    70 KB (8,327 words) - 09:12, 7 June 2025
  • 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...
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  • Thumbnail for Carmichael function
    as Carmichael's λ function, the reduced totient function, and the least universal exponent function. The order of the multiplicative group of integers...
    22 KB (3,133 words) - 23:14, 30 July 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 (6,213 words) - 04:13, 7 July 2025
  • and molecular physics, the Born–Oppenheimer (BO) approximation is the assumption that the wave functions of atomic nuclei and electrons in a molecule can...
    30 KB (5,064 words) - 14:34, 31 July 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...
    27 KB (4,696 words) - 02:32, 17 July 2025
  • Thumbnail for Square wave (waveform)
    effects similar to those of the σ-approximation. For a reasonable approximation to the square-wave shape, at least the fundamental and third harmonic...
    10 KB (1,295 words) - 11:45, 22 March 2025