منابع مشابه
Centroids: a Decentralized Approach
The centroid of a graph is a structure composed of nodes closest from all others. This suggests the presence of center of mass average of all edges, weighted by the local density or specific weight. To compute this centroid in a classic way needs a global view of the graph environment. In this paper, we propose an algorithm using ant colony is proposed to compute an approximate solution of the ...
متن کاملStatistics of Centroids of Velocity
We review the use of velocity centroids statistics to recover information of interstellar turbulence from observations. Velocity centroids have been used for a long time now to retrieve information about the scaling properties of the turbulent velocity field in the interstellar medium. We show that, while they are useful to study subsonic turbulence, they do not trace the statistics of velocity...
متن کاملHierarchical Classification using Shrunken Centroids
There are various types of classifiers that can be trained on gene expression data with class labels. Many of them have an embedded mechanism for feature selection, by which they distinguish a subset of significant genes that are used for future prediction. When dealing with more than two class labels, especially when the number goes up to a dozen or more, people find it useful to know the rela...
متن کاملCentroids and Comparison of Volumes
For −1 < p < 1 we introduce the concept of a polar p-centroid body Γ * p K of a star body K. We consider the question of whether Γ * p K ⊂ Γ * p L implies vol(L) ≤ vol(K). Our results extend the studies by Lutwak in the case p = 1 and Grinberg, Zhang in the case p > 1.
متن کاملOn the Centroids of Polygons and Polyhedra
In this paper we introduce the centroid of any finite set of points of the space and we find some general properties of centroids. These properties are then applied to different types of polygons and polyhedra.
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ژورنال
عنوان ژورنال: Journal of Mathematical Analysis and Applications
سال: 1984
ISSN: 0022-247X
DOI: 10.1016/0022-247x(84)90233-6