Re: [rules-users] Pass Parameter to drools file dynamically
I created a fact type in my code but I am getting exceptions: declare Airline name:String end and this is the java code that I am using. DroolsXPathEvaluatorFactory evaluatorFactory=new DroolsXPathEvaluatorFactory(); evaluatorFactory.setPackageStream(TestMain.class.getResourceAsStream(rule1.drl)); KnowledgeBase kbase=KnowledgeBaseFactory.newKnowledgeBase(); FactType airlineType=kbase.getFactType(droolshelloworld, Airline); Object ob=airlineType.newInstance(); airlineType.set(ob, name, //Airline); StatefulSession ksession=evaluatorFactory.getRuleBase().newStatefulSession(true); ksession.insert(ob); ksession.fireAllRules(); XPathEvaluator evaluator=evaluatorFactory.create(); evaluator.evaluate(TestMain.class.getResourceAsStream(test.xml)); This is giving me exception. Please tell me what am I doing wrong here? -- View this message in context: http://drools.46999.n3.nabble.com/Pass-Parameter-to-drools-file-dynamically-tp4022820p4022832.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Pass Parameter to drools file dynamically
I'm a bit confused as to how this relates to your previous post. Where are you getting the exception? Something like this would work: File dsl = new File(Path of your rule); KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add(ResourceFactory.newFileResource(dsl), ResourceType.DRL); KnowledgeBase kbase = kbuilder.newKnowledgeBase(); StatefulKnowledgeSession session = kbase.newStatefulKnowledgeSession(); FactType airlineType = kbase.getFactType(droolshelloworld, Airline); Object ob = airlineType.newInstance(); airlineType.set(ob, name, //Airline); session.insert(ob); session.fireAllRules(); And your rule looks like this: declare Airline name:String end ruleTest when message:Airline(name==//Airline) then System.out.println(Hello Richa.); end As I said in my previous post. You really need to read some tutorials on this. -- View this message in context: http://drools.46999.n3.nabble.com/Pass-Parameter-to-drools-file-dynamically-tp4022820p4022835.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Importing existing drl into Guvnor
Have you tried... New Package... Import from DRL file? What errors are you seeing? -- View this message in context: http://drools.46999.n3.nabble.com/Importing-existing-drl-into-Guvnor-tp4022836p4022837.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Expert Systems and Functional programming?
I usually try to attend RuleML meet ups and Intellifest (ex October Rules Fest) there you meet all the Expert System community. Cheers On Fri, Mar 15, 2013 at 5:43 PM, Grant Rettke gret...@acm.org wrote: Who are the primary researchers of expert-systems today? On Tue, Mar 12, 2013 at 8:21 PM, Mark Proctor mproc...@codehaus.org wrote: Actually Pamela is one of the papers I've been trying to track down, can't get it on the internet any more. As I first saw it referenced in Production matching for large learning systems. You don't by chance have the paper still? Barachini, F. (1991) The evolution of PAMELA. Expert Systems, 8(2):87-98 I'm building up a collection of relevant research papers, over at mendelay. That is one of my missing papers, that I've been unable to track: http://www.mendeley.com/groups/2918061/rule-systems/papers/ Mark On 12 Mar 2013, at 18:28, Wolfgang Laun wolfgang.l...@gmail.com wrote: Mark, no, the system I'm talking about is PAMELA, developed here in Vienna. You may find references to papers citing PAMELA, authored by F.Barachini and N.Theuretzbacher (one is referenced in the thesis you quoted, see [13]), but I doubt that you'l find one of the papers on the web. It was pre-internet days way back then :-) If you could produce an RBS ranking based on rules fired in production, I think that PAMELA would be in an excellent position. There's a three-digit number of installations by now, but they're running 24/7. -W On 12/03/2013, Mark Proctor mproc...@codehaus.org wrote: OPS83? http://repository.cmu.edu/cgi/viewcontent.cgi?article=2478context=compsci or YES/L1? (seems information on this is out of print and not online either) http://www.amazon.com/dp/B00070YQSU/ref=r_soa_w_d YES/L1: Integrating expert systems technology with traditional programming languages (Research Report RC. International Business Machines Inc. Research Division) I definitely find linq interesting, as it's straight out of the research pages from these projects - I wonder if the linq/database propel know about these... The first time I saw it was in this paper procedural match augments data-driven match http://www.aaai.org/Papers/AAAI/1986/AAAI86-037.pdf They move the lhs logic into the consequence block, using the actual when part as a simple goal trigger - allowing the 'lhs' to be used procedurally, like linq. This allows them to control when a rule is evaluated and that it's evaluation is atomic, and can have cleanup work done. Mark On 12 Mar 2013, at 06:04, Wolfgang Laun wolfgang.l...@gmail.com wrote: Indeed, this thesis mentions a few features of the system I was talking about :-) ([13]) -W On 11/03/2013, Mark Proctor mproc...@codehaus.org wrote: There were a number of research efforts that looked at combining procedural and rule base programming. This one is quite interesting: Combining Rule-Based and Procedural Programming in the XC and XE Programming Lanaugages http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.9.1106rep=rep1type=pdf Mark On 11 Mar 2013, at 18:03, Wolfgang Laun wolfgang.l...@gmail.com wrote: On 11 March 2013 16:19, Mark Proctor mproc...@codehaus.org wrote: So thinking really long term here. Can we build a java layer that provide all the rule functionality we need - but fit ontop of the java language neatly. We'd probably need to allow rule keyword and have it in Classes, at the method level. All class members and methods would be available to the rules in that class. There is this production rule system where you can write your rules embedded in compiling units, and alongside the legacy program units, of a procedural, modular, strongly type HLL, and where you use expressions in the language's own syntax in constraints... We've been using it ever since 1986. Rabbi Akiva was right, wasn't he ;-) -W ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Grant Rettke | ACM, AMA, COG, IEEE gret...@acm.org | http://www.wisdomandwonder.com/ Wisdom begins in wonder. ((λ (x) (x x)) (λ (x) (x x)))
Re: [rules-users] Expert Systems and Functional programming?
There hasn't been a lot of expert system engine research since 1995: http://blog.athico.com/2012/05/drools-54-artificial-intelligence.html In general academics have focused more on the logic programming side, referred to as knowledge representation and reasoning. Developing formalised semantics to represent the world around us, and mappings between those representations. The mapping/layered aspect was a key aspect of he RIF standard. Examples of formalised representations would be Defeasible Logic, http://en.wikipedia.org/wiki/Defeasible_logic, and Description Logic, http://en.wikipedia.org/wiki/Description_logic. The engine which implements this is just a side note, and typically they target prolog. Take a look at the last 5 years of RuleML published papers, and you'll get a good idea. Academic engines of interest: Flora-2/XSB, jDrew, silk, opencyc, jess, openrdf, jena. I inlcude Jess in the above, which is actually still more popular than Drools in Academia - although it's not open source (only free for non-commercial use). OWL and semantic ontologies drives a lot of the engine implementation research these days. Mark On 15 Mar 2013, at 20:43, Grant Rettke gret...@acm.org wrote: Who are the primary researchers of expert-systems today? On Tue, Mar 12, 2013 at 8:21 PM, Mark Proctor mproc...@codehaus.org wrote: Actually Pamela is one of the papers I've been trying to track down, can't get it on the internet any more. As I first saw it referenced in Production matching for large learning systems. You don't by chance have the paper still? Barachini, F. (1991) The evolution of PAMELA. Expert Systems, 8(2):87-98 I'm building up a collection of relevant research papers, over at mendelay. That is one of my missing papers, that I've been unable to track: http://www.mendeley.com/groups/2918061/rule-systems/papers/ Mark On 12 Mar 2013, at 18:28, Wolfgang Laun wolfgang.l...@gmail.com wrote: Mark, no, the system I'm talking about is PAMELA, developed here in Vienna. You may find references to papers citing PAMELA, authored by F.Barachini and N.Theuretzbacher (one is referenced in the thesis you quoted, see [13]), but I doubt that you'l find one of the papers on the web. It was pre-internet days way back then :-) If you could produce an RBS ranking based on rules fired in production, I think that PAMELA would be in an excellent position. There's a three-digit number of installations by now, but they're running 24/7. -W On 12/03/2013, Mark Proctor mproc...@codehaus.org wrote: OPS83? http://repository.cmu.edu/cgi/viewcontent.cgi?article=2478context=compsci or YES/L1? (seems information on this is out of print and not online either) http://www.amazon.com/dp/B00070YQSU/ref=r_soa_w_d YES/L1: Integrating expert systems technology with traditional programming languages (Research Report RC. International Business Machines Inc. Research Division) I definitely find linq interesting, as it's straight out of the research pages from these projects - I wonder if the linq/database propel know about these… The first time I saw it was in this paper procedural match augments data-driven match http://www.aaai.org/Papers/AAAI/1986/AAAI86-037.pdf They move the lhs logic into the consequence block, using the actual when part as a simple goal trigger - allowing the 'lhs' to be used procedurally, like linq. This allows them to control when a rule is evaluated and that it's evaluation is atomic, and can have cleanup work done. Mark On 12 Mar 2013, at 06:04, Wolfgang Laun wolfgang.l...@gmail.com wrote: Indeed, this thesis mentions a few features of the system I was talking about :-) ([13]) -W On 11/03/2013, Mark Proctor mproc...@codehaus.org wrote: There were a number of research efforts that looked at combining procedural and rule base programming. This one is quite interesting: Combining Rule-Based and Procedural Programming in the XC and XE Programming Lanaugages http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.9.1106rep=rep1type=pdf Mark On 11 Mar 2013, at 18:03, Wolfgang Laun wolfgang.l...@gmail.com wrote: On 11 March 2013 16:19, Mark Proctor mproc...@codehaus.org wrote: So thinking really long term here. Can we build a java layer that provide all the rule functionality we need - but fit ontop of the java language neatly. We'd probably need to allow rule keyword and have it in Classes, at the method level. All class members and methods would be available to the rules in that class. There is this production rule system where you can write your rules embedded in compiling units, and alongside the legacy program units, of a procedural, modular, strongly type HLL, and where you use expressions in the language's own syntax in constraints... We've been using it ever since 1986. Rabbi Akiva was right, wasn't he ;-) -W ___ rules-users mailing
