Never mind earlier response, thanks again! On 3/18/2021 9:40 AM, Rob Vesse wrote:
Realised I had linked the wrong version, correct link is below:https://www.dropbox.com/s/knudzewbiuqkqvy/SPARQL%20Optimisation%20101%20Tutorial.pptx?dl=0 Apologies for the confusion, Rob On 18/03/2021, 14:37, "Rob Vesse" <[email protected]> wrote: Steve Think I've shared this before on-list, I produced a slide deck a long time ago (2014) that covers this topic more focused on ARQ https://www.dropbox.com/s/ixetdcfesqse893/SPARQL%20Optimization%20101.pptx?dl=0 Some of the details have changed in the interim (e.g. new optimizations added, default order of optimizations changed etc) but a lot of the core material is still relevant I would also recommend Pavel's talk that Andy linked, as Andy says it covers the need for query authors to frame their queries appropriately but it also goes into more depth around some of the core low level implementation details of SPARQL engines e.g. join types Rob On 18/03/2021, 14:20, "Andy Seaborne" <[email protected]> wrote: On 17/03/2021 22:45, Steve Vestal wrote: > I'd like to dig a bit deeper into SPARQL query performance, better > understand how different query formulations affect that, how ARQ > configuration parameters might be used to tune that. Can anyone > recommend a place to start reading beyond the SPARQL book and language > definition? Hi Steve, It's a bit "it depends on the query. There was a presentation recently and while its not about ARQ, the fundamental point that getting the basic graph pattern matching working efficiently applies. http://www.lotico.com/index.php/SPARQL_Query_Optimization_with_Pavel_Klinov Do you have specific queries in mind or is this a general enquiry? Andy
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