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Pinned topic keyword search over XML streams

‏2009-02-09T14:49:53Z |
Dear all,

For some information filtering experiments I'm looking for XML data sources that are:

  • suitable for keyword search, as RSS/Atom feeds,
so they do not contain only numerical information
as weather forecast or auction reports but also texts

  • updated often, as RSS feeds are, so it make sense to filter them
in real time

  • but not RSS feeds, because I need something:
- with depth deeper then 3 levels
- where not only schema element values can be changed
but also new schema elements (XML tags) can be introduced
to bring new semantics to the data

Do you know any example of such data?

The application will filter such data without knowing schema in advance, using keyword queries.