Hi Andrew, as Scott states the current list of SPARQL functions is included in the TBC help's appendix. I don't believe we have any statistical functions, and certainly no standard deviation. SPIN makes it possible to define such functions yourself (although anything with a lot of aggregating will be difficult to implement).
Depending on your use case you may want to have a look at BIRT, integrated with TBC ME. This provides diagramming facilities and includes a number of mathematical/aggregation features that might be of interest. Having said that, you would not be able to use those BIRT features in other SPARQL queries, but you can send the results of SPARQL queries to BIRT for analysis and report generation. I am not a mathematician but in some statistical functions seem to be easy to integrate, so in the worst case a bit of Java programming will be required. I will provide a better plugin developer's guide for beta 2, but in the meantime the link that Scott provides might help. Is there is further customer demand for such capabilities? If so, can anyone provide a list of functions that they would like to see? Maybe there are some Java libraries for the heavy lifting? Holger On Jan 30, 2009, at 7:58 AM, AndrewB wrote: > > I’m trying to find a way to do statistics in the ontology. > Is there a list of all the functions that Topbraid Composer supports? > Was any Statistical ability added with SPIN? > > For example: standard deviation? > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "TopBraid Composer Users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/topbraid-composer-users?hl=en -~----------~----~----~----~------~----~------~--~---
