Results 41 to 50 of about 798,948 (275)

Density Gain-Rate Peaks for Spectral Clustering

IEEE Access, 2021
Clustering has been troubled by varying shapes of sample distributions, such as line and spiral shapes. Spectral clustering and density peak clustering are two feasible techniques to address this problem, and have attracted much attention from academic ...
Jiexing Liu, Chenggui Zhao
doaj   +1 more source

A Distributed and Approximated Nearest Neighbors Algorithm for an Efficient Large Scale Mean Shift Clustering

, 2019
In this paper we target the class of modal clustering methods where clusters are defined in terms of the local modes of the probability density function which generates the data. The most well-known modal clustering method is the k-means clustering. Mean
Azzag, Hanane, Beck, Gaël, Cérin, Christophe, Duong, Tarn, Lebbah, Mustapha   +4 more
core   +2 more sources

Next Location Prediction Based on an Adaboost-Markov Model of Mobile Users

Sensors, 2019
As an emerging class of spatial trajectory data, mobile user trajectory data can be used to analyze individual or group behavioral characteristics, hobbies and interests.
Hongjun Wang, Zhen Yang, Yingchun Shi
doaj   +1 more source

Granular clustering in a hydrodynamic simulation

, 2002
We present a numerical simulation of a granular material using hydrodynamic equations. We show that, in the absence of external forces, such a system phase-separates into high density and low density regions.
A. Kudrolli, B. Kim, Gene F. Mazenko, I. Goldhirsch, J. Eggers, J.J. Brey, J.J. Brey, J.S. Olafsen, J.T. Jenkins, P. Deltour, P.K. Haff, P.K. Haff, S. Luding, S. McNamara, S.A. Hill, Scott A. Hill, T.P.C. van Noije, W. Losert, X. Nie   +18 more
core   +2 more sources

AUTOMATIC GENERATION OF PARAMETERS IN DENSITY-BASED SPATIAL CLUSTERING

ICTACT Journal on Soft Computing, 2022
As a result of emerging new techniques for scientific way of collecting data, we are able to accumulate data in large scale pertaining to various fields. One such method of data mining is Cluster analysis.
Jayasree Ravi, Sushil Kulkarni
doaj   +1 more source

A first step towards a direct inversion of the Lyman forest in QSO spectra

, 1998
A method for the recovery of the real space line-of-sight mass density field from Lyman absorption in QSO spectra is presented. The method makes use of a Lucy-type algorithm for the recovery of the HI density.
Haehnelt, Martin, Nusser, Adi
core   +1 more source

A Method for Estimating the Distribution of Trachinotus ovatus in Marine Cages Based on Omnidirectional Scanning Sonar

Journal of Marine Science and Engineering
In order to accurately estimate the distribution of Trachinotus ovatus in marine cages, a novel method was developed using omnidirectional scanning sonar and deep-learning techniques.
Yu Hu, Jiazhen Hu, Pengqi Sun, Guohao Zhu, Jialong Sun, Qiyou Tao, Taiping Yuan, Gen Li, Guoliang Pang, Xiaohua Huang   +9 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

A New Validity Detection Method of Online Status Monitoring Data for Power Transformer

IEEE Access
With the rapid development of digital operation and maintenance of transformers, the interference of abnormal data caused by the low reliability of online monitoring sensors has become increasingly evident, directly affecting the accuracy of transformer ...
Hualiang Zhou, Lu Lu, Gaoming Wang, Zhantao Su   +3 more
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source