Journal article
Computational AstroStatistics: Fast and Efficient Tools for Analysing Huge Astronomical Data Sources
09 Oct 2001
Abstract
I present here a review of past and present multi-disciplinary research of
the Pittsburgh Computational AstroStatistics (PiCA) group. This group is
dedicated to developing fast and efficient statistical algorithms for analysing
huge astronomical data sources. I begin with a short review of
multi-resolutional kd-trees which are the building blocks for many of our
algorithms. For example, quick range queries and fast n-point correlation
functions. I will present new results from the use of Mixture Models (Connolly
et al. 2000) in density estimation of multi-color data from the Sloan Digital
Sky Survey (SDSS). Specifically, the selection of quasars and the automated
identification of X-ray sources. I will also present a brief overview of the
False Discovery Rate (FDR) procedure (Miller et al. 2001a) and show how it has
been used in the detection of ``Baryon Wiggles'' in the local galaxy power
spectrum and source identification in radio data. Finally, I will look forward
to new research on an automated Bayes Network anomaly detector and the possible
use of the Locally Linear Embedding algorithm (LLE; Roweis & Saul 2000) for
spectral classification of SDSS spectra.
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Details
- Title
- Computational AstroStatistics: Fast and Efficient Tools for Analysing Huge Astronomical Data Sources
- Creators
- R. C Nichol - CMUS Chong - CMUA. J Connolly - UPittS Davies - CMUC Genovese - CMUA. M Hopkins - UPittC. J Miller - CMUA. W Moore - CMUD Pelleg - CMUG. T Richards - Penn StJ Schneider - CMUI Szapudi - UHawaiiL Wasserman - CMU
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Identifiers
- 991019201382904721