On Wed, Jun 5, 2013 at 11:41 AM, Dave Reynolds <[email protected]> wrote: > On 05/06/13 15:11, Joshua TAYLOR wrote: >> >> Hi all, a colleague is looking at ways of dynamically adding rules to >> an rule reasoner, and has had no luck to date. A message from the >> androJena mailing list from May 2012 at >> >> http://code.google.com/p/androjena/issues/detail?id=13 >> >> describes the problem very clearly. A reply mentions a post by Dave >> Reynolds at >> >> http://tech.dir.groups.yahoo.com/group/jena-dev/message/46790 >> >> but I don't have access to that message since I'm not a group member. >> Does anyone have a copy of that available? >> >> Thanks in advance, >> //JT >> > > It was: > > > On Mon, 2011-02-14 at 22:18 +0000, Andrew Crapo wrote: >> >> I create an instance of GenericRuleReasoner, passing a rule list to >> the constructor and call bindSchema to give the reasoner an OntModel. >> I then create an InfModel with this code: >> >> infModel = ModelFactory.createInfModel(reasoner, dataModel); >> >> where dataModel is an OntModel with additional instance data. If >> certain conditions are met, I wish to add some rules to possibly draw >> additional inferences but without rebinding as I wish to apply the new >> rules to the triples in the current infModel. I am doing this by >> calling addRules and passing it a list of additional rules. However, >> the new rules appear to not have any affect. Am I missing a step? > > addRules is a method on the reasoner, changing that won't change > existing inference models, just affects future InfModels created with > that reasoner. > > There's no support for dynamically adding forward rules to a running > InfModel, it would require a complete rebind anyway. > > It *is* possible to add backward rules to a running InfModel, see > FBRuleInfGraph#addBRules > > I guess it would also be possible to create a new InfModel with just the > new rules and wrap it over the top of the existing InfModel but > addBRules seems more likely to be the way to go.
Thanks! It doesn't change much on our end (and we weren't particularly hopeful that it would), but it's nice to get that confirmation of what we'd already suspected. In the past, wasn't is possible to browse the archive of the Yahoo! group? I thought I remembered browsing threads there. Are there any plans to make those archives publicly available? Thanks again, //JT -- Joshua Taylor, http://www.cs.rpi.edu/~tayloj/
