Results 1 to 10 of about 110,637 (193)

Subgradient ellipsoid method for nonsmooth convex problems. [PDF]

open access: yesMath Program, 2023
AbstractIn this paper, we present a new ellipsoid-type algorithm for solving nonsmooth problems with convex structure. Examples of such problems include nonsmooth convex minimization problems, convex-concave saddle-point problems and variational inequalities with monotone operator.
Rodomanov A, Nesterov Y.
europepmc   +5 more sources

The Ellipsoid Factor for quantification of rods, plates and intermediate forms in 3D geometries [PDF]

open access: yesFrontiers in Endocrinology, 2015
The Ellipsoid Factor (EF) is a method for the local determination of the rod- or plate-like nature of porous or spongy continua. EF at a point within a 3D structure is defined as the difference in axis ratios of the greatest ellipsoid which fits inside ...
Michael eDoube
doaj   +4 more sources

Ellipsoid Method for Linear Regression Parameters Determination [PDF]

open access: yesКібернетика та комп'ютерні технології, 2020
Introduction. Linear regression parameters determination can be formulated as a non-smooth function minimization problem, which is Lp-norm of residual of the linear equations system.
V. Stovba
doaj   +2 more sources

Comparison of two- and three-dimensional ultrasound for volume estimation of the meal-stimulated gallbladder [PDF]

open access: yesJournal of Ultrasonography
To compare two- and three-dimensional (2D and 3D) ultrasound of the gallbladder in an adult cohort.
Jouleh Tæraneh   +7 more
doaj   +2 more sources

Estimation of Kidney Volumes in Autosomal Dominant Polycystic Kidney Disease: A Comparison Between Manual Segmentation and Ellipsoid Formula [PDF]

open access: yesClinics and Practice
Objectives: Evaluate the agreement and interobserver variability between manual segmentation and the ellipsoid formula in estimating single kidney volume (SKV) in patients with autosomal dominant polycystic kidney disease (ADPKD).
Nicola Maggialetti   +7 more
doaj   +2 more sources

3D Distance Filter for the Autonomous Navigation of UAVs in Agricultural Scenarios

open access: yesRemote Sensing, 2022
In precision agriculture, remote sensing is an essential phase in assessing crop status and variability when considering both the spatial and the temporal dimensions.
Cesare Donati   +5 more
doaj   +1 more source

Using the Ellipsoid Method to Study Relationships in Medical Data

open access: yesКібернетика та комп'ютерні технології, 2023
Deterioration of moral and psychological state on the background of a full–scale war is observed in many social groups. Timely detection of various types of pre–depressive states and appropriate therapy is a critically important task nowadays.
Petro Stetsyuk   +4 more
doaj   +1 more source

One method for minimization a convex Lipschitz-continuous function of two variables on a fixed square [PDF]

open access: yesКомпьютерные исследования и моделирование, 2019
In the article we have obtained some estimates of the rate of convergence for the recently proposed by Yu. E.Nesterov method of minimization of a convex Lipschitz-continuous function of two variables on a square with a fixed side.
Dmitry Arkad'evich Pasechnyuk   +1 more
doaj   +1 more source

Definable Ellipsoid Method, Sums-of-Squares Proofs, and the Isomorphism Problem [PDF]

open access: yes, 2018
The ellipsoid method is an algorithm that solves the (weak) feasibility and linear optimization problems for convex sets by making oracle calls to their (weak) separation problem.
Atserias, Albert, Ochremiak, Joanna
core   +5 more sources

DETERMINATION OF EARTHQUAKE FOCUS COORDINATES USING THE CASSINI OVAL METHOD WITH SECOND- AND FOURTH-ORDER HYPERBOLA FIGURES

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2020
Objectives. To study the dependencies obtained when determining the coordinates of an earthquake hypocentre using the figures of fourth and second orders.Method.
B. I. Shakhtarin   +2 more
doaj   +1 more source

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