NxBRE Activity
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ddossot
Activity for NxBRE
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souha raboudi modified a comment on discussion Open Discussion
Hi David, the rule engine in my application must provide some essential features like: -Backward/Forward chaining support:Which used in inference engine -rule prioritizing. -rule dependency. -must allow complex conditions. And my app will have a lot of rules like this: rule example: if(cos(x)>y and/or sin(x)<z) then z=y Not if-else statements. so my question is : Is it possible with NxBRE( Inference engine )to write this rule with ruleML syntax?
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Hi David, the rule engine in my application must provide some essential features like: -Backward/Forward chaining support:Which used in inference engine -rule prioritizing. -rule dependency. -must allow complex conditions. And my app will have a lot of rules like this: rule example: if(cos(x)>y and/or sin(x)<z) then z=y Not if-else statements. so my question is : Is it possible with NxBRE( Inference engine )to write this rule with ruleML structure?
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safa fakhfakh posted a comment on discussion Help
Hi David, I already figured it out , I used the following code: //I create a TextWriterTraceListener for the log file TextWriterTraceListener ctl = new TextWriterTraceListener(logfilepath); //I assign this listener to FlowEngineSource to get log messages from code execution : // Logger.FlowEngineSource.TraceInformation(logMessage) NxBRE.Util.Logger.FlowEngineSource.Listeners.Clear(); NxBRE.Util.Logger.FlowEngineSource.Listeners.Add(ctl); //I assign this listener to FlowEngineRuleBaseSource to get...
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David Dossot posted a comment on discussion Help
Hi Safa - What have you tried?
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Hi, I want to do the exact same thing as Rajesh but I didn't understand how to do it. I want to trace information for the flow engine execution in a text file. How can I do that? Thanks. Regards, Safa
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Hi, I want to do the exact same thing as Rajesh but I didn't understand how to do it. I want to trace information for the flow engine execution in a rule file. How can I do that? Thanks. Regards, Safa
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maybe :p I am going to put NxBRE architecture in my report so i will change it to avoid confusing.
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Here is the original image : https://github.com/ddossot/NxBRE/blob/master/Misc/architecture-overall.png The overlap with the Flow Engine is probably to show that one can use it as a binder for the Inference Engine, I guess? I can't remember, this was so long ago :P
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I didn't find anywhere mentioned that the flow engine uses binders but in the architecture figure in this link https://www.safaribooksonline.com/library/view/windows-developer-power/0596527543/ch04s02.html ( please find attached the architecture picture), the binder is placed above both engines so it appears like if the flow engine also use it, this is why i am confused.
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Here it is: https://github.com/ddossot/NxBRE/blob/master/NxBRE3/Source/Util/PseudoCodeRenderer.cs It's used for rendering rules into a human friendly pseudo-code, for documentation purposes, to let, say, business experts, verify the rules are correct.
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I've looked for all mentions of "binder" in the chapter and can't find a place where it says it's used with the flow engine. So either I can't search (and it's possible!) or you may have misread. Please point to the specific sentence that says so.
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Hi, In NxBRE architecture presented in this link https://www.safaribooksonline.com/library/view/windows-developer-power/0596527543/ch04s02.html show that the flow engine uses binder. I didn't understand how it uses binders and what for? As I understood, binders are used by the inference engine to assert facts based on business objects, but i didn't understand what the flow engines uses it for.
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Hi, In NxBRE architecture presented in this link https://www.safaribooksonline.com/library/view/windows-developer-power/0596527543/ch04s02.html show that the flow engine uses binder. I didn't understand how it uses binders and what for? As I understood, binders are used by the inference engine to assert facts based on business objects, but i didn't understand what the flow engines uses it for.
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Hi, I read that The Flow Engine contains an HTML-rendering engine that offers a convenient way to navigate through rules and read them transformed into pseudocode. in this link: https://www.safaribooksonline.com/library/view/windows-developer-power/0596527543/ch04s02.html I was wondering where can I find it and how to use it? and what it is used for? Thanks,
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Hi, I read that The Flow Engine contains an HTML-rendering engine that offers a convenient way to navigate through rules and read them transformed into pseudocode. in this link: https://www.safaribooksonline.com/library/view/windows-developer-power/0596527543/ch04s02.html I was wondering chere can I find it and how to use it? and what it is used for? Thanks,
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yes I have already checked the ResultsMap but didn't find anything helpful.
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Ah sorry, I misunderstood, I thought you wanted to know exactly which set/rule had...
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My goal was to know when the engine have modified the input data, so i just added...
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Even if the logic block had an ID, this wouldn't be what you want because you want...
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your suggestion is interesting, i will try to look at it. But I still didn't know...
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https://github.com/ddossot/NxBRE/blob/master/NxBRE3/Test/FlowEngine/TestBackward...
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Do you have an example working with the BackwardChainer class?
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your suggestion is interesting, i will try to look at it. But I still didn't know...
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Unfortunately there's no way to know the set ID from within the set. So you would...
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I think you didn't understand what i am trying to do. I have a Set with id="Set1"...
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The objectId would be the ID of the List that you've put in the context before calling...
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and what the objctId will be? I didn't understand your suggestion.
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Have you tried placing an <ObjectLookup> as the first element in <Set>?
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I don't need to have an id for each rule, i just want to have the Set id that's all,...
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Just a string you make up, like "Reject-People-With-Bad-Debt"
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I tried it now and it works. Thank you. How to i get the set Id to add it to the...
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Have you tried using the Add member method on it?
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I don't need the testObj , but I didn't know how to add elements to the list with...
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ERROR! The markdown supplied could not be parsed correctly. Did you forget to surround...
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ERROR! The markdown supplied could not be parsed correctly. Did you forget to surround...
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What you're doing with ObjectLookup is equivalent to this in C#: testObj.list("elt1",...
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ERROR! The markdown supplied could not be parsed correctly. Did you forget to surround...
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Congrats on learning further the internals of the Flow Engine, seriously it's great...
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I looked at it but there is nothing helpfull ther. But i tried to debug how the execution...
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Have you checked IBRERuleMetaData.IBRERuleFactory? I was hoping it would help pinpointing...
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I looked at MetaDataproperty but i didn't find anything about the fired rule. My...
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Hi i wanted to know what is this Id property https://github.com/ddossot/NxBRE/blob/724f63a976ecdf6247a2d2c02471c81c7807b1cf/NxBRE3/Examples/Login/Login.cs#L60...
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ERROR! The markdown supplied could not be parsed correctly. Did you forget to surround...
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ok thank you i will look at it, and post the solution if i find it.
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Maybe: if you look at the fields in IBRERuleMetaData, you get a lot of information...
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Thank you. Is there a way to detect the firing of a rule in a specific set?
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You don't need to implement it, registering a delegate is enough: https://github...
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Hi , is there an example on how to use the IBREDispatcher to detect rule firing ?...
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A dynamic invoke set gets the set ID from a context object (via valueId) instead...
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ERROR! The markdown supplied could not be parsed correctly. Did you forget to surround...
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You are attempting a dynamic set invocation with valueId when what you wanted was...
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You are attempting a dynamic set invocation with valueId when what you wanted was...
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Hi, I want to use the InvokeSet but i keep getting an error : can not invoke set...
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Hi, I want to use the InvokeSet but i keep getting an error : can not invoke set...
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Hi, can you send it to me too please?
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yes I read the documentation but I didn't really understand how that works. Actually...
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Did you read chapter 3.3 of the user guide? Binders can be written in C# VB.NET and...
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Hi, I wanted to use the inference engine as you suggested but I am having trouble...
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The IBREDispatcher interface allows you to receive notifications when rules are fired....
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Hi , I want to ask if there is a way to know when no rule have been fired after the...
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Hi , I want to ask if there is a way to know when no rule have been fired after the...
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thanks a lot , i will try it.
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It would be indirect: 1) expose object.prop as fact1 2) have a rule that infers fact2...
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how can i say for example, if object.prop=value then execute object.method with inference...
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You can but indirectly, via facts, either with binding or on events. It's more involved...
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thank you, but i want the forward chaining. in fact i chose the flow engine because...
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You are correct. Use either the Inference Engine or the Flow Engine + Backward Chainer...
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that means that it executes the flow of rules only one time, and don't check if the...
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By default, the Flow Engine doesn't use any chaining, it's just an imperative processor...
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Thank you for the clarification.
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Right, the old archives contain an outdated README, I can't really fix that. The...
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in fact , i have another question , it's regarding the flow engine, does it use forward...
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thanks. It says LGPL in the README.txt file that we get when downloading Nxbre-3_2_0.zip...
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NxBRE was initially licensed under LGPL but has been switched to MIT almost 5 years...
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Hi, I want to know what's the license of NxBRE: at sourceforge.net they are indicating...
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NxBRE provides a bunch of static utils to help with relfection calls. NxBRE.Util.DataAccess.GetArrayColumnValue...
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I didn't understand how the example you showed me is a solution to my problem, do...
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Check this out: https://github.com/ddossot/NxBRE/blob/master/NxBRE3/Rulefiles/te...
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thanks for the reply. after i located the index with <Increment> how can I acces...
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Use an <Increment> rule alongside the <ForEach> to keep track of the index.
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Hi, I am new to NxBRE, and i am trying to work with the flow engine, i read the documentation...
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NxBRE.Util.Logger exposes several TraceSource that you can listen to, using standard...
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Rajesh Bansal posted a comment on discussion Help
Hi, How can i enable tracing in nxbre for rule execution. I want to trace information...
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NxBRE released /OldFiles/nxbre-2_5.zip
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