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VODKA: as VO-tool can be useful for data mining science

VODKA: as VO-tool can be useful for data mining science. R. Smareglia 1 , O. Laurino 2 , M. Brescia 3. 1 INAF - OATs 2 Smithsonian Astr . Obs. 3 INAF - OANa. Jenam 2011 – Saint Petersburg. How to face the Observational Data Tsunami.

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VODKA: as VO-tool can be useful for data mining science

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  1. VODKA: as VO-tool can be useful for data mining science R. Smareglia1, O. Laurino2, M. Brescia3 1 INAF - OATs 2 Smithsonian Astr. Obs. 3 INAF - OANa Jenam 2011 – Saint Petersburg

  2. How to face the Observational Data Tsunami • 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

  3. How to face the Observational Data Tsunami: • A Dam can be useful • Vodka users can be kept updated asynchronously and automatically Jenam 2011 – Saint Petersburg

  4. Vodka goals • 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

  5. Vodka Targets • 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

  6. Inqueries and Snaphots • An inquiry is defined by its searching criteria. It may carry only resources (Registry Inquiry) or also data (Data Inquiry) Jenam 2011 – Saint Petersburg

  7. Inqueries and Snaphots An inquiry consists of several snapshots; A snapshot consists of several resourceseach resource will have its own file. Jenam 2011 – Saint Petersburg

  8. Snapshot Differences Jenam 2011 – Saint Petersburg

  9. What users can do • 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

  10. Future Improvements • 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

  11. Jenam 2011 – Saint Petersburg

  12. Jenam 2011 – Saint Petersburg

  13. DAME MISSION… • A web application (or a Rich Internet Application, RIA) accessiblethrough a simple web browser, hence a web page enhanced by userdynamicalinteraction • The interface design objectivebehindDAME web application is to simulate the intuitive, immediate interaction of a traditional desktop application, butdoesn’t requireanylocalinstallation. • DAME appsprovide in a transparent way all remote computingpower and storage to the user (Cloud/Grid). Jenam 2011 – Saint Petersburg

  14. Conclusions.. • About Data Mining we are at level of “gold Prospector” • With Vodka we have created a tool to improve the efficiency… (we hope). Jenam 2011 – Saint Petersburg

  15. References 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

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