B
Bodhisattva Sen
Researcher at Columbia University
Publications - 120
Citations - 2962
Bodhisattva Sen is an academic researcher from Columbia University. The author has contributed to research in topics: Estimator & Isotonic regression. The author has an hindex of 28, co-authored 113 publications receiving 2517 citations. Previous affiliations of Bodhisattva Sen include University of Cambridge & University of Michigan.
Papers
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Journal ArticleDOI
Velocity dispersion profiles of seven dwarf spheroidal galaxies
Matthew G. Walker,Mario Mateo,Edward W. Olszewski,Oleg Y. Gnedin,Xiao Wang,Bodhisattva Sen,Michael Woodroofe +6 more
TL;DR: In this paper, the authors measured 8394 line-of-sight velocities (± 2.5 km s-1) for 6804 stars from high-resolution spectra obtained at the Magellan and MMT telescopes.
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Nonparametric Least Squares Estimation of a Multivariate Convex Regression Function
Emilio Seijo,Bodhisattva Sen +1 more
TL;DR: In this paper, the consistency of the least square estimator of a convex regression function when the predictor is multidimensional was investigated. But the consistency was not investigated in the context of convex and componentwise nonincreasing regression.
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On risk bounds in isotonic and other shape restricted regression problems
TL;DR: In this article, the authors consider the problem of estimating an unknown unknown estimator from noisy observations under the constraint that the estimator belongs to certain convex polyhedral cones in a polygonal space.
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Clean kinematic samples in dwarf spheroidals: an algorithm for evaluating membership and estimating distribution parameters when contamination is present
Matthew G. Walker,Matthew G. Walker,Mario Mateo,Edward W. Olszewski,Bodhisattva Sen,Michael Woodroofe +5 more
TL;DR: An EM algorithm is tailored to operate on spectroscopic samples obtained with the Michigan-MIKE Fiber System as part of the Magellan survey of stellar radial velocities in nearby dwarf spheroidal (dSph) galaxies, and returns accurate parameter estimates much more reliably than conventional methods of contaminant removal.
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Uncloaking globular clusters in the inner Galaxy
Javier Alonso-García,Javier Alonso-García,Mario Mateo,Bodhisattva Sen,Moulinath Banerjee,Márcio Catelan,Dante Minniti,Dante Minniti,Kaspar von Braun +8 more
TL;DR: In this paper, the authors present a well defined and reasonably homogeneous photometric database for 25 of the brightest Galactic globular clusters located in the direction of the inner Galaxy, in the B, V, and I bands using the Magellan 6.5 m Telescope and the Hubble Space Telescope.