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Data Mining

The UPGMA algorithm

The UPGMA (Unweighted Pair Group Method with Arithmetic Mean) is a simple agglomerative or hierarchical clustering method. It is one of the most popular methods in ecology for the classification of sampling units (such as vegetation plots) on the basis ...

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Supervised vs. Unsupervised learning


Machine learning algorithms are described as either ‘supervised’ or ‘unsupervised’. The distinction is drawn from how the learner classifies data. In supervised algorithms, the classes are predetermined. These classes can be conceived of as a finite set, previously arrived at ...

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Categorical Clustering vs Topical Clustering

clustering example

In this post, I will give you some useful references about these two types of clustering methods: categorical vs topical clustering. Categorical Clustering: ROCK algorithm http://rss.acs.unt.edu/Rdoc/library/cba/html/rockCluster.html http://en.wikibooks.org/wiki/Data_Mining_Algorithms_In_R/Clustering/RockCluster Topical Clustering: Sahimi (1996), Applying the Multiple Cause Mixture Model to Text Categorization, ...

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Data Clustering

http://jamesmccaffrey.wordpress.com/2013/05/06/data-clustering-using-category-utility/ http://msdn.microsoft.com/en-us/magazine/dn198247.aspx

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Cluster Analysis

Statistica http://www.statsoft.com/textbook/cluster-analysis/

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