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Analysis of Multivariate and High-Dimensional Data by Inge Koch

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6

Cluster Analysis

There is no sense in being precise when you don’t even know what you’re talking about (John von Neumann, 1903–1957).

6.1 Introduction

Cluster Analysis is an exploratory technique which partitions observations into different clusters or groupings. In medicine, biology, psychology, marketing or finance, multivariate measurements of objects or individuals are the data of interest. In biology, human blood cells of one or more individuals – such as the HIV flow cytometry data – might be the objects one wants to analyse. Cells with similar multivariate responses are grouped together, and cells whose responses differ considerably from each other are partitioned into different clusters. The analysis of cells from a number of individuals ...

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