Results 31 to 40 of about 483,846 (289)
A randomized approximate nearest neighbors algorithm [PDF]
Applied and Computational Harmonic Analysis, 2011 We present a randomized algorithm for the approximate nearest neighbor problem in d -dimensional Euclidean space. Given N points { x j } in , the ...
Peter Wilcox, Jones +2 more
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A Hybrid Spatial Indexing Structure of Massive Point Cloud Based on Octree and 3D R*-Tree
Applied Sciences, 2021 The spatial index structure is one of the most important research topics for organizing and managing massive 3D Point Cloud. As a point in Point Cloud consists of Cartesian coordinates (x,y,z), the common method to explore geometric information and ...
Wei Wang +5 more
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Next-nearest-neighbor Tight-binding Model of Plasmons in Graphene
, 2013 In this paper we investigate the influence of the next-nearest-neighbor coupling of tight-binding model of graphene on the spectrum of plasmon excitations.
Kadirko, V., Kogan, E., Ziegler, K.
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Nearest Neighbor Search in the Metric Space of a Complex Network for Community Detection
Information, 2016 The objective of this article is to bridge the gap between two important research directions: (1) nearest neighbor search, which is a fundamental computational tool for large data analysis; and (2) complex network analysis, which deals with large real ...
Suman Saha, Satya P. Ghrera
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Comparison of five distance sampling methods for estimating quantitative characteristics of Zagros Forests [PDF]
تحقیقات جنگل و صنوبر ایران, 2013 Distance sampling methods are extensively used for forests management of Zagros region of Iran. In the present study, estimation of quantitative characteristics of sampling methods, including individual, nearest neighbor, second nearest neighbor ...
Yusof Askari +3 more
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Collapse transition of a square-lattice polymer with next nearest-neighbor interaction
, 2012 We study the collapse transition of a polymer on a square lattice with both nearest-neighbor and next nearest-neighbor interactions, by calculating the exact partition function zeros up to chain length 36.
Flory P. J. +3 more
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Hamiltonian decomposition for bulk and surface states
, 2008 We demonstrate that a tight-binding Hamiltonian with nearest- and next-nearest-neighbor hopping integrals can be decomposed into bulk and boundary parts in a general lattice system. The Hamiltonian decomposition reveals that next nearest-neighbor hopping
C. Kittel +4 more
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Enhancing SR-Tree for Nearest Neighbor Search
IEEE AccessNearest neighbor search, also known as k-nearest neighbors (kNN), has become one of the essential backbones in machine learning and data mining tasks, particularly in multidimensional dynamic and evolving data environments. While dynamic index structures
Kayumov Abduaziz +2 more
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Topological phase transitions driven by next-nearest-neighbor hopping in two-dimensional lattices
, 2012 For two-dimensional lattices in a tight-binding description, the intrinsic spin-orbit coupling, acting as a complex next-nearest-neighbor hopping, opens gaps that exhibit the quantum spin Hall effect.
Beugeling, W. +2 more
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, 2017 An $S=1/2$ triangular-lattice Heisenberg antiferromagnet with next-nearest-neighbor interactions is investigated under a magnetic field by the numerical-diagonalization method.
Nakano, Hiroki, Sakai, Toru
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