r. smareglia 1, o. laurino 2, m. brescia 3 jenam 2011 – saint petersburg 1 inaf - oats 2...
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R. Smareglia1, O. Laurino2, M. Brescia3
Jenam 2011 – Saint Petersburg
1 INAF - OATs2 Smithsonian Astr. Obs.3 INAF - OANa
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New services and new data continuously pop up, especially when the time domain comes into play (e.g. ELTs: LSST, OWL, ALMA, GAIA).
The Virtual Observatory is getting more and more alive The interaction with the VO (in order to fetch data) is basically
synchronous. ◦ complex queries may take some time to run.
Jenam 2011 – Saint Petersburg
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A Dam can be useful
Vodka users can be kept updated asynchronously and automatically
Jenam 2011 – Saint Petersburg
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expose the power of the VO but not its complexity;
make users perceive that the Virtual Observatory is alive, and easily understand whether the VO is useful to them or not;
try and pick the best features of the best existing VO data fetching tools;
give the user a quick glimpse of what he can find inside the VO;
save user’s inquiries; Develop link with data mining specific tools for building
datasets.
Vodka is on it way to fully achieve all these goals.
Jenam 2011 – Saint Petersburg
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VO newbies: no apps to download in order to start, automatic updates, live examples (no SQL, ADQL or other buzzwords whatsoever);
VO frequent flyers: many datasets (maybe inquiries) to manage, keeping up with new data;
Data miners: multi - cross matching, multi-BoK extraction.
Jenam 2011 – Saint Petersburg
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An inquiry is defined by its searching criteria. It may carry only resources (Registry Inquiry) or also data (Data Inquiry)
Jenam 2011 – Saint Petersburg
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An inquiry consists of several snapshots; A snapshot consists of several resources
each resource will have its own file.
Jenam 2011 – Saint Petersburg
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Jenam 2011 – Saint Petersburg
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Set up inquiries and decide the updating rate; receive updates directly to their mailbox; view inquiry details, i.e. the critera and the list of snapshots; view snapshot details, i.e. the list of resources of a specific
snapshot; view the history of incremental time differences between
snapshots, both in terms of resources and data; download a single votable for the entire snapshot; download a single votable for each resource in a snapshot,
as it appeared when the snapshot was taken. download incremental files (new data, old data, missing
data); broadcast data to SAMP-enabled applications (e.g. Topcat,
Aladin)
Jenam 2011 – Saint Petersburg
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Vokda 2.0 is under development (end of August) It must be a scalable application ( working on cluster )
Data mining specific tools for, e.g., BoK extraction;
Specific clients for most active services (e.g. simbad, ned, ads);
Add more capabilities (e.g. VO-TAP);
Finalize SOAP web service and client API packages (Java, Python);
Integration with VOSpace;
Jenam 2011 – Saint Petersburg
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Jenam 2011 – Saint Petersburg
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Jenam 2011 – Saint Petersburg
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A web application (or a Rich Internet Application, RIA) accessible through a simple web browser, hence a web page enhanced by user dynamical interaction
The interface design objective behind DAME web application is to simulate the intuitive, immediate interaction of a traditional desktop application, but doesn’t require any local installation.
DAME apps provide in a transparent way all remote computing power and storage to the user (Cloud/Grid).
Jenam 2011 – Saint Petersburg
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About Data Mining we are at level of “gold Prospector”
Jenam 2011 – Saint Petersburg
With Vodka we have created a tool to improve the efficiency… (we hope).
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Where you can find Vodka: http://ia2.oats.inaf.it/vodka
VOkda 2.0 is under test, will be on-line asap ( end of August )
DAME website: http://dame.dsf.unina.it/
Jenam 2011 – Saint Petersburg