papers
Publications (3)
astro-ph2005
Modeling complete distributions with incomplete observations: The velocity ellipsoid from Hipparcos data
David W. Hogg, Michael R. Blanton, Sam T. Roweis +1
[abridged] A "missing data" algorithm is developed to model (ie, reconstruct) the three-dimensional velocity distribution function of a sample of stars using data (velocity measure…
stat.ME2011
Extreme deconvolution: Inferring complete distribution functions from noisy, heterogeneous and incomplete observations
Jo Bovy, David W. Hogg, Sam T. Roweis
We generalize the well-known mixtures of Gaussians approach to density estimation and the accompanying Expectation--Maximization technique for finding the maximum likelihood parame…
astro-ph.GA2009
The velocity distribution of nearby stars from Hipparcos data I. The significance of the moving groups
Jo Bovy, David W. Hogg, Sam T. Roweis
We present a three-dimensional reconstruction of the velocity distribution of nearby stars (<~ 100 pc) using a maximum likelihood density estimation technique applied to the two-di…