• Thumbnail for Ellipsoid method
    the ellipsoid method is an iterative method for minimizing convex functions over convex sets. The ellipsoid method generates a sequence of ellipsoids whose...
    23 KB (3,704 words) - 01:03, 6 May 2025
  • Thumbnail for Ellipsoid
    An ellipsoid is a surface that can be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation...
    37 KB (5,912 words) - 21:24, 28 April 2025
  • Thumbnail for Interior-point method
    simplex method, which has exponential run-time in the worst case. Practically, they run as fast as the simplex method—in contrast to the ellipsoid method, which...
    30 KB (4,691 words) - 12:23, 28 February 2025
  • the ellipsoid method is exponential in n. But in most applications, R is not so huge. In these cases, the ellipsoid method is the only known method that...
    28 KB (4,698 words) - 06:12, 27 January 2025
  • known for his four-page February 1979 paper that indicated how an ellipsoid method for linear programming can be implemented in polynomial time. The paper...
    18 KB (1,456 words) - 05:35, 1 November 2024
  • method. Instead of maintaining the feasible polytope Gt, it maintains an ellipsoid that contains it. Computing the center-of-gravity of an ellipsoid is...
    4 KB (576 words) - 14:37, 29 November 2023
  • In mathematics, the John ellipsoid or Löwner–John ellipsoid E(K) associated to a convex body K in n-dimensional Euclidean space ⁠ R n {\displaystyle \mathbb...
    7 KB (968 words) - 03:03, 14 February 2025
  • of the ellipsoid method with the approximate separation oracle is O ( Q m n / δ ) {\displaystyle O(Qmn/\delta )} . During the ellipsoid method, we use...
    30 KB (6,386 words) - 19:22, 4 June 2025
  • Thumbnail for Earth ellipsoid
    of a (which is not quite 6,400 km). Many methods exist for determination of the axes of an Earth ellipsoid, ranging from meridian arcs up to modern satellite...
    24 KB (2,826 words) - 18:03, 25 May 2025
  • a method to describe a convex set that is given as an input to an optimization algorithm. Separation oracles are used as input to ellipsoid methods.: 87...
    9 KB (1,626 words) - 17:13, 20 November 2024
  • efficient algorithm that solves these problems in polynomial time. The ellipsoid method is also polynomial time but proved to be inefficient in practice. Denoting...
    18 KB (2,243 words) - 06:57, 11 May 2025
  • Thumbnail for Mathematical optimization
    Mathematical optimization (category Mathematical and quantitative methods (economics))
    minimization problems (similar to conjugate gradient methods). Ellipsoid method: An iterative method for small problems with quasiconvex objective functions...
    53 KB (6,155 words) - 23:42, 31 May 2025
  • optimization and is best known for his work on the ellipsoid method, modern interior-point methods and robust optimization. Nemirovski earned a Ph.D....
    8 KB (598 words) - 01:31, 2 June 2025
  • nonlinear programming. It can still be solved in polynomial time by the ellipsoid method if the objective function is convex; otherwise the problem may be NP...
    13 KB (1,844 words) - 01:05, 24 May 2025
  • Thumbnail for Newton's method
    In numerical analysis, the Newton–Raphson method, also known simply as Newton's method, named after Isaac Newton and Joseph Raphson, is a root-finding...
    70 KB (8,960 words) - 08:03, 25 May 2025
  • method like gradient descent, hill climbing, Newton's method, or quasi-Newton methods like BFGS, is an algorithm of an iterative method or a method of...
    11 KB (1,546 words) - 15:43, 10 January 2025
  • Thumbnail for Linear programming
    the introduction of the ellipsoid method. The convergence analysis has (real-number) predecessors, notably the iterative methods developed by Naum Z. Shor...
    61 KB (6,690 words) - 17:57, 6 May 2025
  • Thumbnail for Geodesics on an ellipsoid
    The study of geodesics on an ellipsoid arose in connection with geodesy specifically with the solution of triangulation networks. The figure of the Earth...
    73 KB (8,506 words) - 15:35, 22 April 2025
  • dimensions of the Earth ellipsoid axes were defined by logarithms in keeping with former calculation methods. The Bessel ellipsoid fits especially well to...
    5 KB (675 words) - 03:27, 14 February 2025
  • Thumbnail for Nelder–Mead method
    The Nelder–Mead method (also downhill simplex method, amoeba method, or polytope method) is a numerical method used to find the minimum or maximum of an...
    17 KB (2,379 words) - 16:52, 25 April 2025
  • Thumbnail for Assignment problem
    the simplex algorithm, or in worst-case polynomial time using the ellipsoid method, each specialization has a smaller solution space and thus more efficient...
    20 KB (2,960 words) - 09:53, 9 May 2025
  • Thumbnail for Geographic coordinate system
    standards, also includes a choice of geodetic datum (including an Earth ellipsoid), as different datums will yield different latitude and longitude values...
    23 KB (2,540 words) - 22:18, 14 May 2025
  • Thumbnail for Perfect graph
    nearest integer. The solution method for semidefinite programs, used by this algorithm, is based on the ellipsoid method for linear programming. It leads...
    59 KB (7,055 words) - 07:30, 25 February 2025
  • algorithm uses the central-cut ellipsoid method. Another option is to use another method that uses simplices instead of ellipsoids. An oracle for WVIOL, with...
    26 KB (3,992 words) - 02:16, 27 May 2025
  • Lecture 17" (PDF). Grötschel, M.; Lovasz, L.; Schrijver, A. (1981). "The ellipsoid method and its consequences in combinatorial optimization". Combinatorica...
    22 KB (3,349 words) - 21:42, 2 February 2025
  • Thumbnail for Latitude
    the angle formed between the vector perpendicular (or normal) to the ellipsoidal surface from the point, and the plane of the equator. Two levels of abstraction...
    47 KB (6,166 words) - 16:38, 30 May 2025
  • Quadratic programming (category Optimization algorithms and methods)
    Wolfe, etc.). For positive definite Q, when the problem is convex, the ellipsoid method solves the problem in (weakly) polynomial time. Ye and Tse present...
    22 KB (1,923 words) - 11:09, 27 May 2025
  • Khachiyan, Martin Grötschel, László Lovász and Alexander Schrijver for the ellipsoid method in linear programming and combinatorial optimization. G. P. Egorychev...
    21 KB (1,965 words) - 23:53, 11 August 2024
  • Thumbnail for World Geodetic System
    astro-geodetic methods already described.) The sole contribution of satellite data to the development of WGS 60 was a value for the ellipsoid flattening which...
    24 KB (2,842 words) - 03:41, 26 April 2025
  • functions. Cutting-plane methods Ellipsoid method Subgradient method Dual subgradients and the drift-plus-penalty method Subgradient methods can be implemented...
    30 KB (3,171 words) - 12:53, 12 June 2025