20 citations · 56 across the 8 of their papers we have counts for
9 papers
Bump hunting through density curvature features
José E. Chacón, Javier Fernández Serrano
Bump hunting deals with finding in sample spaces meaningful data subsets known as bumps. These have traditionally been conceived as modal or concave regions in the graph of the und…
Higher order differential analysis with vectorized derivatives
José E. Chacón, Tarn Duong
Higher order derivatives of functions are structured high dimensional objects which lend themselves to many alternative representations, with the most popular being multi-index, ma…
Minimum adjusted Rand index for two clusterings of a given size
José E. Chacón, Ana I. Rastrojo
The adjusted Rand index (ARI) is commonly used in cluster analysis to measure the degree of agreement between two data partitions. Since its introduction, exploring the situations…
Explicit agreement extremes for a table with given marginals
José E. Chacón
The problem of maximizing (or minimizing) the agreement between clusterings, subject to given marginals, can be formally posed under a common framework for several agreement measur…
Modal clustering asymptotics with applications to bandwidth selection
Alessandro Casa, José E. Chacón, Giovanna Menardi
Density-based clustering relies on the idea of linking groups to some specific features of the probability distribution underlying the data. The reference to a true, yet unknown, p…
A comparison of bandwidth selectors for mean shift clustering
José E. Chacón, Pablo Monfort
We explore the performance of several automatic bandwidth selectors, originally designed for density gradient estimation, as data-based procedures for nonparametric, modal clusteri…