Gregory Todd Williams SPARQL BGP Optimization Presentation Joshua Shinavier 1

Question is for the Presentation: Gregory Todd Williams SPARQL BGP Optimization Presentation
Question is asked by: Joshua Shinavier
The Question is: What is it about the presented approach which makes it appropriate only for in-memory RDF repositories? I don't understand why the same arguments and techniques would not apply to disk-based stores.
Answer: The same arguments would likely apply to native disk-based stores. The paper makes the false distinction between in-memory stores and disk-based RDBMS stores. The choice to ignore RDBMS-based stores is legitimate, since RDBMS have their own optimization frameworks. However, native disk-based stores (those that store RDF directly themselves) would likely see similar efficiency gains based on the presented optimizer.

Answer	The same arguments would likely apply to n … The same arguments would likely apply to native disk-based stores. The paper makes the false distinction between in-memory stores and disk-based RDBMS stores. The choice to ignore RDBMS-based stores is legitimate, since RDBMS have their own optimization frameworks. However, native disk-based stores (those that store RDF directly themselves) would likely see similar efficiency gains based on the presented optimizer. cy gains based on the presented optimizer.
Question asked	What is it about the presented approach which makes it appropriate only for in-memory RDF repositories? I don't understand why the same arguments and techniques would not apply to disk-based stores.
Question asked by	Joshua Shinavier +
Question for the Presentation	Gregory Todd Williams SPARQL BGP Optimization Presentation +