4 citations · 11 across the 15 of their papers we have counts for
6 papers · 1 filter
Binary Trees and Taxicab Correspondence Analysis of Extremely Sparse Binary Textual Data: A Case Study
Vartan Choulakian, Jacques Allard, Ron Kenett
This is a case study, where Taxicab Correspondence Analysis reveals that the underlying structure of an extremely sparse binary textual data set can be represented by a binary tree…
On the choice of weights in aggregate compositional data analysis
Vartan Choulakian, Jules De Tibeiro, Pasquale Sarnacchiaro
In this paper, we distinguish between two kinds of compositional data sets: elementary and aggregate. This fact will help us to decide the choice of the weights to use in log inter…
Notes on Correspondence Analysis of Power Transformed Data Sets
Vartan Choulakian
We prospect for a clear simple picture on CA of power transformed or the Box-Cox transformed data initiated since 2009 by Grenacre. We distinguish two types of data sets : strictly…
Some notes on Goodman's marginal-free correspondence analysis
Vartan Choulakian
In his seminal paper Goodman (1996) introduced marginal-free correspondence analysis; where his principal aim was to reconcile Pearson correlation measure with Yule's association m…
Matrix Factorizations Based on Induced Norms
Vartan Choulakian
We decompose a matrix Y into a sum of bilinear terms in a stepwise manner, by considering Y as a mapping from a finite dimensional Banach space into another finite dimensional Bana…
Taxicab Correspondence Analysis of Sparse Contingency Tables
Vartan Choulakian
Visualization and interpretation of contingency tables by correspondence analysis (CA), as developed by Benzecri, has a rich structure based on Euclidean geometry. However, it is a…