R. Smareglia1, O. Laurino2, M. Brescia3

Jenam 2011 – Saint Petersburg

1 INAF - OATs2 Smithsonian Astr. Obs.3 INAF - OANa

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

A Dam can be useful

Vodka users can be kept updated asynchronously and automatically

Jenam 2011 – Saint Petersburg

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

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

An inquiry is defined by its searching criteria. It may carry only resources (Registry Inquiry) or also data (Data Inquiry)

Jenam 2011 – Saint Petersburg

An inquiry consists of several snapshots; A snapshot consists of several resources

each resource will have its own file.

Jenam 2011 – Saint Petersburg

Jenam 2011 – Saint Petersburg

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

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

Jenam 2011 – Saint Petersburg

Jenam 2011 – Saint Petersburg

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

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).

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