63 citations · 148 across the 13 of their papers we have counts for
4 papers · 1 filter
Kernel-estimated Nonparametric Overlap-Based Syncytial Clustering
Israel Almodóvar-Rivera, Ranjan Maitra
Commonly-used clustering algorithms usually find ellipsoidal, spherical or other regular-structured clusters, but are more challenged when the underlying groups lack formal structu…
Reduced Basis Kriging for Big Spatial Fields
Karl T. Pazdernik, Ranjan Maitra, Douglas Nychka +1
In spatial statistics, a common method for prediction over a Gaussian random field (GRF) is maximum likelihood estimation combined with kriging. For massive data sets, kriging is c…
Efficient Bandwidth Estimation in Two-dimensional Filtered Backprojection Reconstruction
Ranjan Maitra
A generalized cross-validation approach to estimate the reconstruction filter bandwidth in two-dimensional Filtered Backprojection is presented. The method writes the reconstructio…
An efficient -means-type algorithm for clustering datasets with incomplete records
Andrew Lithio, Ranjan Maitra
The -means algorithm is arguably the most popular nonparametric clustering method but cannot generally be applied to datasets with incomplete records. The usual practice then is…