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ttnphns
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About

A SPSS user (and developer, not affiliated with), data analyst.

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All Questions Answers
Score Newest
answer
162
Is there an intuitive interpretation of $A^TA$ for a data matrix $A$?
Feb 9, 2012
answer
161
PCA and proportion of variance explained
Feb 10, 2012
answer
158
What correlation makes a matrix singular and what are implications of singularity or near-singularity?
Sep 24, 2013
answer
127
How to visualize what canonical correlation analysis does (in comparison to what principal component analysis does)?
Jul 28, 2013
answer
114
What's the difference between principal component analysis and multidimensional scaling?
Aug 9, 2011
answer
105
Loadings vs eigenvectors in PCA: when to use one or another?
Mar 29, 2015
answer
101
How does centering the data get rid of the intercept in regression and PCA?
Feb 6, 2012
answer
95
Choosing the right linkage method for hierarchical clustering
Jun 7, 2016
answer
87
Are mean normalization and feature scaling needed for k-means clustering?
Jan 17, 2012
answer
82
Why does k-means clustering algorithm use only Euclidean distance metric?
Jan 7, 2014
Top Meta posts
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12
Personal blog for a data analyst - maybe in the style / options of CV?
10
Tags around categorical data coding / representation
8
Definition of [indicator-variables] tag?
7
LDA (latent dirichlet allocation) tag issue
6
Updating guidelines about asking a question on our Help page
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Need pairing algorithm - based on Hungarian?

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