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Link prediction with hyperbolic geometry [PDF]

open access: yesPhysical Review Research, 2020
Link prediction is a paradigmatic problem in network science with a variety of applications. In latent space network models this problem boils down to ranking pairs of nodes in the order of increasing latent distances between them. The network model with
Maksim Kitsak   +2 more
doaj   +5 more sources

Multi-Link MIMO Channel Modeling Using Geometry-Based Approach [PDF]

open access: greenIEEE Transactions on Antennas and Propagation, 2011
Geometry-based stochastic channel models (GSCMs) are extended to support multi-link simulations by applying the concept of common clusters. This novel approach aims to control the correlation between different links, inter-link correlation, by adjusting the amount of power simultaneously propagating via the same clusters in the different links.
Juri Poutanen   +4 more
openalex   +7 more sources

THE COMMON EVOLUTION OF GEOMETRY AND ARCHITECTURE FROM A GEODETIC POINT OF VIEW [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Throughout history the link between geometry and architecture has been strong and while architects have used mathematics to construct their buildings, geometry has always been the essential tool allowing them to choose spatial shapes which are ...
T. Bellone, F. Fiermonte, L. Mussio
doaj   +1 more source

Evolution of cortical geometry and its link to function, behaviour and ecology

open access: yesNature Communications, 2023
Studies in comparative neuroanatomy and of the fossil record demonstrate the influence of socio-ecological niches on the morphology of the cerebral cortex, but have led to oftentimes conflicting theories about its evolution.
Ernst Schwartz   +8 more
doaj   +1 more source

3D STRUCTURE ANALYSIS: ARCHITECTURE AS AN EXPRESSION OF THE TIES BETWEEN GEOMETRY AND PHILOSOPHY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
In recent decades many Geomatics-based methods have been created to reconstruct and visualize objects, and these include digital photogrammetry, Lidar, remote sensing and hybrid techniques. The methods used to process such data are the result of research
T. Bellone, L. Mussio, C. Porporato
doaj   +1 more source

Rational Linking and Contact Geometry [PDF]

open access: yes, 2011
In the note we study Legendrian and transverse knots in rationally null-homologous knot types. In particular we generalize the standard definitions of self-linking number, Thurston-Bennequin invariant and rotation number. We then prove a version of Bennequin's inequality for these knots and classify precisely when the Bennequin bound is sharp for ...
Baker, Kenneth L., Etnyre, John B.
openaire   +2 more sources

Centerpoints: A Link between Optimization and Convex Geometry [PDF]

open access: yesSIAM Journal on Optimization, 2016
We introduce a concept that generalizes several different notions of a "centerpoint" in the literature. We develop an oracle-based algorithm for convex mixed-integer optimization based on centerpoints. Further, we show that algorithms based on centerpoints are "best possible" in a certain sense.
Basu, Amitabh, Oertel, Timm
openaire   +5 more sources

Relating geometry descriptions to its derivatives on the web [PDF]

open access: yes, 2019
Sharing building information over the Web is becoming more popular, leading to advances in describing building models in a Semantic Web context. However, those descriptions lack unified approaches for linking geometry descriptions to building elements ...
Bonduel, Mathias   +3 more
core   +1 more source

ANALYSIS OF FRACTURE GEOMETRY IN FLUID DRAINAGE AFTER HYDRAULIC FRACTURING. CASE OF WINK MS-09 IN MAKELEKESE FIELD, D.R. CONGO [PDF]

open access: yesRomanian Journal of Petroleum & Gas Technology
In this paper, we analyze stimulation by hydraulic fracturing with the aim of establishing a relationship between fracture geometry and hydrocarbon drainage.
Rachidi Opuluku   +5 more
doaj   +1 more source

Effect of geometry of tank on the thermal characteristics of waxy crude oil during its static cooling

open access: yesCase Studies in Thermal Engineering, 2020
With the purpose of revealing the inner link between the thermal characteristics and geometry of tank, the physical and mathematical models of waxy crude oil during static cooling process under different geometric sizes are established. Based on the data
Jian Zhao   +4 more
doaj   +1 more source

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