Commentary on: The Virtual Observatory G. Jogesh Babu Center for Astrostatistics

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Commentary on: The Virtual Observatory G. Jogesh Babu Center for Astrostatistics

Moving Data is Slow! 14 minutes ,920, OC hours1000Gbps 1 day Mpbs 14 hours ,000155OC3 2 days2, ,00043T3 2 months2, ,2001.5T1 5 months Home DSL 6 years3,0861, Home phone Time/TB $/TB Sent $/Mbps Rent $/month Speed Mbps Context Source: TeraScale Sneakernet, Microsoft Research, Jim Gray et al. How long does it take to move a Terabyte? (how about a Petabyte?)

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 Technology-enabled, but science- driven Data analysis for VO

The VOStat Project Web-based statistics services for the VO (Babu, Feigelson,Djorgovski, Graham, Mahabal, Nichol, Wasserman, et al.) Data Client Powerful Statistical Computers VOStat Web service Tools for data exploration and analysis in the VO and other science environments

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

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