scholarly journals New internal clustering validation measure for contiguous arbitrary‐shape clusters

2021 ◽  
Author(s):  
Juan Carlos Rojas‐Thomas ◽  
Matilde Santos
Keyword(s):  
Arbitrary Shape ◽  
Validation Measure ◽  
Clustering Validation

An Initialization Method Based on Hybrid Distance for k-Means Algorithm

2017 ◽  
Vol 29 (11) ◽  
pp. 3094-3117 ◽  
Author(s):  
Jie Yang ◽  
Yan Ma ◽  
Xiangfen Zhang ◽  
Shunbao Li ◽  
Yuping Zhang
Keyword(s):  
Euclidean Distance ◽  
Distance Measure ◽  
Data Sets ◽  
Optimal Result ◽  
Real World Data ◽  
Initial Cluster ◽  
Validation Measure ◽  
Hybrid Distance ◽  
Clustering Validation ◽  
Selection Of

The traditional [Formula: see text]-means algorithm has been widely used as a simple and efficient clustering method. However, the performance of this algorithm is highly dependent on the selection of initial cluster centers. Therefore, the method adopted for choosing initial cluster centers is extremely important. In this letter, we redefine the density of points according to the number of its neighbors, as well as the distance between points and their neighbors. In addition, we define a new distance measure that considers both Euclidean distance and density. Based on that, we propose an algorithm for selecting initial cluster centers that can dynamically adjust the weighting parameter. Furthermore, we propose a new internal clustering validation measure, the clustering validation index based on the neighbors (CVN), which can be exploited to select the optimal result among multiple clustering results. Experimental results show that the proposed algorithm outperforms existing initialization methods on real-world data sets and demonstrates the adaptability of the proposed algorithm to data sets with various characteristics.

Accurate Imaging Method for Moving Target with Arbitrary Shape for Multi-Static UWB Radar

2013 ◽  
Vol E96.B (7) ◽  
pp. 2014-2023 ◽  
Author(s):  
Ryo YAMAGUCHI ◽  
Shouhei KIDERA ◽  
Tetsuo KIRIMOTO
Keyword(s):  
Arbitrary Shape ◽  
Imaging Method ◽  
Moving Target ◽  
Uwb Radar ◽  
Accurate Imaging

Pattern synthesis of array antennas in presence of conducting bodies of arbitrary shape

1997 ◽  
Vol 33 (18) ◽  
pp. 1512 ◽  
Author(s):  
L. Landesa ◽  
F. Obelleiro ◽  
J.L. Rodríguez ◽  
A.G. Pino
Keyword(s):  
Arbitrary Shape ◽  
Pattern Synthesis ◽  
Array Antennas ◽  
Conducting Bodies

The stokes translation of a particle of arbitrary shape along the axis of a circular cylinder

1966 ◽  
Vol 16 (1) ◽  
pp. 273-300 ◽  
Author(s):  
Richard M. Sonshine ◽  
Raymond G. Cox ◽  
Howard Brenner
Keyword(s):  
Circular Cylinder ◽  
Arbitrary Shape
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