Commentary on: The Virtual Observatory

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Commentary on The Virtual Observatory

• G. Jogesh Babu
• Center for Astrostatistics
• http//astrostatistics.psu.edu

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Moving Data is Slow!
How long does it take to move a Terabyte? (how
about a Petabyte?)
Source TeraScale Sneakernet, Microsoft Research,
Jim Gray et al.
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Data analysis for VO

• Federate the existing and forthcoming large
  digital sky surveys and archives, and provide the
  tools for their scientific exploitation
• A dynamical, interactive, web-based research
  environment for the new astronomy with massive
  data sets
• http//astrostatistics.psu.edu/vostat/
• Technology-enabled, but science-driven

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The VOStat ProjectWeb-based statistics services
for the VO(Babu, Feigelson,Djorgovski, Graham,
Mahabal, Nichol, Wasserman, et al.)
Data
Data
Client
Data
Powerful Statistical Computers
VOStat Web service
Client
Client
Tools for data exploration and analysis in the
VO and other science environments
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• Streaming algorithms
• Object detection in multi-epoch/band data(Data
  from different surveys of the same field)
• Sequential smoothing of massive multivariate
  data.
• Convex hull pealing methods
• Exploratory analysis on subsets of data through
  VOStat