VODKA - A Data Discovery Agent for the Virtual Observatory.
Currently, Virtual Observatory users interact with the VO infrastructure as the main actors. In particular, each time they want to fetch data from the VO they have to choose an application and use it in a "one-shot" fashion.
VODKA (VO Data Keeping-up Agent) is a new VO actor which monitors the state of the VO seeking for changes in services and datasets and notifying users for those changes and updates. These snapshots are persistent so that users can manage them and, when new interesting data is found, download them.
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