Comments on: Data Preparation and R Packages for Cluster Analysis https://www.datanovia.com/en/lessons/data-preparation-and-r-packages-for-cluster-analysis/ Data Mining and Statistics for Decision Support Sun, 12 May 2019 06:45:25 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: Julian https://www.datanovia.com/en/lessons/data-preparation-and-r-packages-for-cluster-analysis/#comment-1939 Sun, 12 May 2019 06:45:25 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7644#comment-1939 Dear Dr Kassambara,
as many others have already said – thank you very much for this great site! It is indeed a resource I see myself coming back to again and again.
Regarding data preprocessing, I have been wondering how to deal with skewed data – should some form of power transformation be applied to get them into a more “Gaussian” shape, or are different distance metrics better suited than the Euclidean distance, or does it not matter in the end?

]]> By: PS https://www.datanovia.com/en/lessons/data-preparation-and-r-packages-for-cluster-analysis/#comment-1650 Wed, 23 Jan 2019 12:33:24 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7644#comment-1650 Hi,

I love this site. It really is helping me out in a “Cluster Analysis” project,

I wanted to understand what kinds of techniques should be used to perform clustering on very large datasets (my data set has about 3 million rows), I am stuck as using functions like “get_clust_tendency” or even the kmeans and hclust algorithms are throwing “cannot allocate vector of 17000 Gb” error.

Is there a better way to approach this problem with clustering on big datasets?

]]> By: Alexis Idlette-Wilson https://www.datanovia.com/en/lessons/data-preparation-and-r-packages-for-cluster-analysis/#comment-1549 Sun, 02 Dec 2018 01:38:16 +0000 https://www.datanovia.com/en/?post_type=dt_lessons&p=7644#comment-1549 This site is awesome. Thank you!

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