4 papers
Representing asymmetric relationships by h-plots. Discovering the archetypal patterns of cross-journal citation relationships
Aleix Alcacer, Irene Epifanio
This work approaches the multidimensional scaling problem from a novel angle. We introduce a scalable method based on the h-plot, which inherently accommodates asymmetric proximity…
Archetypal cases for questionnaires with nominal multiple choice questions
Aleix Alcacer, Irene Epifanio
Archetypal analysis serves as an exploratory tool that interprets a collection of observations as convex combinations of pure (extreme) patterns. When these patterns correspond to…
Incorporating Fairness Constraints into Archetypal Analysis
Aleix Alcacer, Irene Epifanio
Archetypal Analysis (AA) is an unsupervised learning method that represents data as convex combinations of extreme patterns called archetypes. While AA provides interpretable and l…
A Survey on Archetypal Analysis
Aleix Alcacer, Irene Epifanio, Sebastian Mair +1
Archetypal analysis (AA) was originally proposed in 1994 by Adele Cutler and Leo Breiman as a computational procedure for extracting distinct aspects, so-called archetypes, from ob…