Results 21 to 30 of about 1,288,587 (289)

A quantitative discriminant method of elbow point for the optimal number of clusters in clustering algorithm

EURASIP Journal on Wireless Communications and Networking, 2021
Clustering, a traditional machine learning method, plays a significant role in data analysis. Most clustering algorithms depend on a predetermined exact number of clusters, whereas, in practice, clusters are usually unpredictable.
Congming Shi, Bingtao Wei, Shoulin Wei, Wen Wang, Hai Liu, Jialei Liu   +5 more
doaj   +1 more source

Milk Quality and Carbon Footprint Indicators of Dairy Sheep Farms Depend on Grazing Level and Identify the Different Management Systems

Animals, 2021
Currently, there are very few studies in the dairy sheep sector associating milk quality and indicators regarding carbon footprint and their link to grazing levels.
Javier Plaza, Isabel Revilla, Jaime Nieto, Cristina Hidalgo, Mario Sánchez-García, Carlos Palacios   +5 more
doaj   +1 more source

Multi-UAV Assisted Multi-Tier Millimeter-Wave Cellular Networks for Hotspots With 2-Tier and 4-Tier Network Association

IEEE Access, 2020
The evolution of the fifth-generation (5G)/ beyond 5G (B5G) mobile communication networks greatly depends on the seamless integration of terrestrial and sky networks over advanced multi-tier heterogeneous network (HetNet) infrastructure.
Pengshan Ji, Xiangdong Jia, Yi Lu, Haixia Hu, Yuhua Ouyang   +4 more
doaj   +1 more source

The Space Motion of the Globular Cluster NGC 6397 [PDF]

, 2007
As a by-product of high-precision, ultra-deep stellar photometry in the Galactic globular cluster NGC 6397 with the Hubble Space Telescope, we are able to measure a large population of background galaxies whose images are nearly point-like. These provide
Brad M. S. Hansen, Dauphole B., Dauphole B., David B. Reitzel, Giovanni Carraro, Gregory G. Fahlman, Harvey B. Richer, Ivan R. King, James P. Brewer, Jarrod R. Hurley, Jasonjot S. Kalirai, Jay Anderson, Michael M. Shara, Peter B. Stetson, R. Michael Rich, Saul D. Davis, Sébastien Lépine   +16 more
core   +2 more sources

Three-Dimensional Virtual Orchard Construction Method Based on Laser Point Cloud

智慧农业, 2022
To solve the problems of low level of digitalization of orchard management and relatively single construction method, a three-dimensional virtual orchard construction method based on laser point cloud was proposed in this research.
FENG Han, ZHANG Hao, WANG Zi, JIANG Shijie, LIU Weihong, ZHOU Linghui, WANG Yaxiong, KANG Feng, LIU Xingxing, ZHENG Yongjun   +9 more
doaj   +1 more source

Modeling Scheme of Multi-Layer Heterogeneous Network for Dense Hotspot Area [PDF]

Jisuanji gongcheng, 2021
To address the heterogeneity in Base Station(BS) deployment and the coupling between User Equipment (UE) and BS in the hotspot communication scenario of the fifth-generation(5G)/beyond 5G(B5G) networks,this paper proposes a three-layer heterogeneous ...
Lü Yaping, JIA Xiangdong, CHEN Yuwan, LU Yi
doaj   +1 more source

GEOMAX: beyond linear compression for three-point galaxy clustering statistics [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We present the GEOMAX algorithm and its python implementation for a two-step compression of bispectrum measurements. The first step groups bispectra by the geometric properties of their arguments; the second step then maximizes the Fisher information with respect to a chosen set of model parameters in each group.
Davide Gualdi, Héctor Gil-Marín, Marc Manera, Benjamin Joachimi, Ofer Lahav   +4 more
openaire   +3 more sources

The Phase Diagram of the Gonihedric 3d Ising Model via CVM [PDF]

, 1996
We use the cluster variation method (CVM) to investigate the phase structure of the 3d gonihedric Ising actions defined by Savvidy and Wegner. The geometrical spin cluster boundaries in these systems serve as models for the string worldsheets of the ...
A Pelizzola, Ambartzumian, An, Cappi, D.A Johnston, E.N.M Cirillo, Fisher, G Gonnella, Johnston, Karowski, Karowski, Kikuchi, Kikuchi, Landau, Morita, Morita, Morita, Morita, Pelizzola, Pelizzola, Pelizzola, Pelizzola, Pietig, Savvidy, Savvidy, Savvidy, Savvidy, Savvidy, Savvidy, Selke, Steiner, Sterling   +31 more
core   +3 more sources

Some properties of $I_3$-λ-statistical cluster points

Dera Natung Government College Research Journal, 2022
In this note, we investigate some problems concerning the set of I_3I 3–\lambdaλ-statistical cluster points of triple sequences via ideals in finite dimensional spaces, and some of its properties in finite dimensional Banach spaces are proved.
Verda Gürdal, Ömer Kişi
openaire   +2 more sources

Light Clusters and Pasta Phases in Warm and Dense Nuclear Matter [PDF]

, 2017
The pasta phases are calculated for warm stellar matter in a framework of relativistic mean-field models, including the possibility of light cluster formation.
Avancini, Sidney S., Ferreira, Márcio, Pais, Helena, Providência, Constança, Röpke, Gerd   +4 more
core   +2 more sources