Quilitz2008querying question 1 by lebo
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A Question from Tim Lebo about quilitz2008querying:
The authors state, "There is no other need for cooperation except of the support of the SPARQL protocol." Yet later, "To find the relevant information sources for the different triples in a query and to decompose the query into sub-queries the query engine needs information about the data sources." DARQ relies on the service descriptions to determine how to decompose the query.
- How do the service descriptions not require cooperation to obtain the capabilities <math>C_D</math> of a data source D? "We deliberately use only these simple statistics because we expect every data source to be able to provide them, or at least rough estimations."
Facts about Quilitz2008querying question 1 by leboRDF feed
| A | Question + |
| About | Quilitz2008querying + |
| Author | Tim Lebo + |
| Question asked | The authors state, "There is no other need … The authors state, "There is no other need for cooperation except of the support of the SPARQL protocol." Yet later, "To find the relevant information sources for the different triples in a query and to decompose the query into sub-queries the query engine needs information about the data sources." DARQ relies on the service descriptions to determine how to decompose the query.
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| Question asked by | Tim Lebo + |
| Question for the Presentation | Ankesh Sep11 + |
| Text | The authors state, "There is no other need … The authors state, "There is no other need for cooperation except of the support of the SPARQL protocol." Yet later, "To find the relevant information sources for the different triples in a query and to decompose the query into sub-queries the query engine needs information about the data sources." DARQ relies on the service descriptions to determine how to decompose the query.
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