Results 21 to 30 of about 1,264,517 (335)

Bayesian hierarchical clustering for studying cancer gene expression data with unknown statistics [PDF]

open access: yes, 2013
Clustering analysis is an important tool in studying gene expression data. The Bayesian hierarchical clustering (BHC) algorithm can automatically infer the number of clusters and uses Bayesian model selection to improve clustering quality. In this paper,
A Su   +39 more
core   +4 more sources

Galaxy Cluster Correlation Function to z ~ 1.5 in the IRAC Shallow Cluster Survey [PDF]

open access: yes, 2007
We present the galaxy cluster autocorrelation function of 277 galaxy cluster candidates with 0.25 \le z \le 1.5 in a 7 deg^2 area of the IRAC Shallow Cluster Survey.
A. H. Gonzalez   +9 more
core   +1 more source

Improving Image Clustering through Sample Ranking and Its Application to Remote Sensing Images

open access: yesRemote Sensing, 2022
Image clustering is a very useful technique that is widely applied to various areas, including remote sensing. Recently, visual representations by self-supervised learning have greatly improved the performance of image clustering.
Qinglin Li, Guoping Qiu
doaj   +1 more source

OSSOS VI. Striking Biases in the detection of large semimajor axis Trans-Neptunian Objects [PDF]

open access: yes, 2017
The accumulating, but small, set of large semi-major axis trans-Neptunian objects (TNOs) shows an apparent clustering in the orientations of their orbits.
Alexandersen, Mike   +11 more
core   +2 more sources

Density Peak Clustering Based on Relative Density under Progressive Allocation Strategy

open access: yesMathematical and Computational Applications, 2022
In traditional density peak clustering, when the density distribution of samples in a dataset is uneven, the density peak points are often concentrated in the region with dense sample distribution, which is easy to affect clustering accuracy.
Yongli Liu, Congcong Zhao, Hao Chao
doaj   +1 more source

An Improved DGA Feature Clustering-Based Method for Transformer Fault Diagnosis

open access: yesCSEE Journal of Power and Energy Systems
The power transformer is the core equipment of a power system, and its reliable operation is crucial for maintaining the safety and stability of power grids.
Yujie Zhang, Jian Feng, Shanyuan Wang
doaj   +1 more source

Statistical Properties of Convex Clustering

open access: yes, 2015
In this manuscript, we study the statistical properties of convex clustering. We establish that convex clustering is closely related to single linkage hierarchical clustering and $k$-means clustering.
Tan, Kean Ming, Witten, Daniela
core   +1 more source

Simple Measures of Individual Cluster-Membership Certainty for Hard Partitional Clustering

open access: yes, 2018
We propose two probability-like measures of individual cluster-membership certainty which can be applied to a hard partition of the sample such as that obtained from the Partitioning Around Medoids (PAM) algorithm, hierarchical clustering or k-means ...
Graham, Jinko, Liu, Dongmeng
core   +2 more sources

Random Fuzzy Clustering Granular Hyperplane Classifier

open access: yesIEEE Access, 2020
Granular computing is a method of studying human intelligent information processing, which has advantage of knowledge discovery. In this paper, we convert a classification problem of sample space into a classification problem of fuzzy clustering granular
Wei Li   +5 more
doaj   +1 more source

Active Informative Pairwise Constraint Formulation Algorithm for Constraint-Based Clustering

open access: yesIEEE Access, 2019
Constraint-based clustering utilizes pairwise constraints to improve clustering performance. In this paper, we propose a novel formulation algorithm to generate more informative pairwise constraints from limited queries for the constraint-based ...
Guoxiang Zhong   +2 more
doaj   +1 more source

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