Results 11 to 20 of about 32,569,759 (313)

Centroidal Power Diagrams, Lloyd's Algorithm, and Applications to Optimal Location Problems [PDF]

open access: yesSIAM Journal on Numerical Analysis, 2014
In this paper we develop a numerical method for solving a class of optimization problems known as optimal location or quantization problems. The target energy can be written either in terms of atomic measures and the Wasserstein distance or in terms of ...
D. Bourne, S. Roper
semanticscholar   +1 more source

Patterning nanoscale crossed grating with high uniformity by using two-axis Lloyd's mirrors based interference lithography.

open access: yesOptics Express, 2020
A two-axis Lloyd's mirrors interferometer based optical fabrication system was theoretically investigated and constructed for patterning high-uniformity nanoscale crossed grating structures over a large area with a high throughput.
Gaopeng Xue   +7 more
semanticscholar   +1 more source

A Hybrid MPI/OpenMP Parallelization of $K$ -Means Algorithms Accelerated Using the Triangle Inequality

open access: yesIEEE Access, 2019
The standard formulation of the K -means clustering (Lloyd's method) performs many unnecessary distance calculations. In this paper, we focus on four approaches that use the triangle inequality to avoid unnecessary distance calculations. These approaches
Wojciech Kwedlo, Pawel J. Czochanski
doaj   +1 more source

Efficient High-Dimensional Kernel k-Means++ with Random Projection

open access: yesApplied Sciences, 2021
Using random projection, a method to speed up both kernel k-means and centroid initialization with k-means++ is proposed. We approximate the kernel matrix and distances in a lower-dimensional space Rd before the kernel k-means clustering motivated by ...
Jan Y. K. Chan, Alex Po Leung, Yunbo Xie
doaj   +1 more source

Universal quantum simulation of single-qubit nonunitary operators using duality quantum algorithm

open access: yesScientific Reports, 2021
Quantum information processing enhances human’s power to simulate nature in quantum level and solve complex problem efficiently. During the process, a series of operators is performed to evolve the system or undertake a computing task.
Chao Zheng
doaj   +1 more source

Strongly coupled chameleon fields: Possible test with a neutron Lloydʼs mirror interferometer [PDF]

open access: yes, 2012
The consideration of possible neutron Lloydʼs mirror interferometer experiment to search for strongly coupled chameleon fields is presented. The chameleon scalar fields were proposed to explain the acceleration of expansion of the Universe.
Y. Pokotilovski
semanticscholar   +1 more source

Probing three-dimensional mesoscopic interfacial structures in a single view using multibeam X-ray coherent surface scattering and holography imaging

open access: yesNature Communications, 2023
Visualizing surface-supported and buried planar mesoscale structures, such as nanoelectronics, ultrathin-film quantum dots, photovoltaics, and heterogeneous catalysts, often requires high-resolution X-ray imaging and scattering.
Miaoqi Chu   +5 more
doaj   +1 more source

Complexity of holographic superconductors

open access: yesJournal of High Energy Physics, 2019
We study the complexity of holographic superconductors (Einstein-Maxwell-complex scalar actions in d + 1 dimension) by the “complexity = volume” (CV) conjecture.
Run-Qiu Yang   +3 more
doaj   +1 more source

Structural Analysis of a Barge Midship Section Considering the Still Water and Wave Load Effects

open access: yesJournal of Marine Science and Engineering, 2021
Structural failures in the barge midship sections can cause operational delay, sinking, cargo loss and environmental damage. These failures can be generated by the barge and cargo weights, and wave load effects on the midships sections.
Cristian M. Salazar-Domínguez   +4 more
doaj   +1 more source

Study on Vortex-Induced Vibration Predictions for Ship Rudders

open access: yes한국해양공학회지, 2020
As regulations concerning ship vibration and noise are becoming stricter, considerable attention is being drawn to prediction technologies for ship vibration and noise. In particular, the resonance and lock-in phenomena caused by vortex-induced vibration
Won-Seok Jang   +4 more
doaj   +1 more source

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