Difference between revisions of "Clustering"

From
Jump to: navigation, search
m
m (Text replacement - "http:" to "https:")
Line 26: Line 26:
 
** [[Variational Autoencoder (VAE)]]
 
** [[Variational Autoencoder (VAE)]]
 
** [[Biclustering]]
 
** [[Biclustering]]
** [http://en.wikipedia.org/wiki/Multidimensional_scaling Multidimensional Scaling (MDS)]
+
** [https://en.wikipedia.org/wiki/Multidimensional_scaling Multidimensional Scaling (MDS)]
 
** Hierarchical; to include clustering  
 
** Hierarchical; to include clustering  
 
*** [[Hierarchical Cluster Analysis (HCA)]]
 
*** [[Hierarchical Cluster Analysis (HCA)]]
Line 38: Line 38:
 
* In case of partitioning results, the Jaccard Index measures how frequently pairs of items are joined together in two clustering data sets and how often pairs are observed only in one set.
 
* In case of partitioning results, the Jaccard Index measures how frequently pairs of items are joined together in two clustering data sets and how often pairs are observed only in one set.
 
* Related coefficient are the Rand Index and the Adjusted Rand Index. These indices also consider the number of pairs (d) that are not joined together in any of the clusters in both sets
 
* Related coefficient are the Rand Index and the Adjusted Rand Index. These indices also consider the number of pairs (d) that are not joined together in any of the clusters in both sets
[http://girke.bioinformatics.ucr.edu/GEN242/mydoc_Rclustering_3.html#example-2 Clustering Algorithms | Data Analysis in Genome Biology]
+
[https://girke.bioinformatics.ucr.edu/GEN242/mydoc_Rclustering_3.html#example-2 Clustering Algorithms | Data Analysis in Genome Biology]
  
 
<youtube>CtKeHnfK5uA</youtube>
 
<youtube>CtKeHnfK5uA</youtube>

Revision as of 05:46, 28 March 2023

YouTube ... Quora ...Google search ...Google News ...Bing News


Similarity Measures for Clusters:

  • Compare the numbers of identical and unique item pairs appearing in cluster sets
  • Achieved by counting the number of item pairs found in both clustering sets (a) as well as the pairs appearing only in the first (b) or the second (c) set.
  • With this a similarity coefficient, such as the Jaccard index, can be computed. The latter is defined as the size of the intersect divided by the size of the union of two sample sets: a/(a+b+c).
  • In case of partitioning results, the Jaccard Index measures how frequently pairs of items are joined together in two clustering data sets and how often pairs are observed only in one set.
  • Related coefficient are the Rand Index and the Adjusted Rand Index. These indices also consider the number of pairs (d) that are not joined together in any of the clusters in both sets

Clustering Algorithms | Data Analysis in Genome Biology