souha raboudi modified a comment on discussion Open Discussion

souha raboudi — Sun, 21 Apr 2019 11:55:13 -0000

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)

souha raboudi posted a comment on discussion Open Discussion

souha raboudi — Sun, 21 Apr 2019 11:02:45 -0000

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Mon, 30 Oct 2017 08:01:36 -0000

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...

David Dossot posted a comment on discussion Help

David Dossot — Sat, 28 Oct 2017 03:37:13 -0000

Hi Safa - What have you tried?

safa fakhfakh modified a comment on discussion Help

safa fakhfakh — Tue, 24 Oct 2017 10:59:29 -0000

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

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Tue, 24 Oct 2017 08:59:07 -0000

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

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 19 Apr 2017 14:23:35 -0000

maybe :p I am going to put NxBRE architecture in my report so i will change it to avoid confusing.

David Dossot posted a comment on discussion Help

David Dossot — Wed, 19 Apr 2017 14:16:32 -0000

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

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 19 Apr 2017 14:11:14 -0000

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.

David Dossot posted a comment on discussion Open Discussion

David Dossot — Wed, 19 Apr 2017 14:06:45 -0000

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.

David Dossot posted a comment on discussion Help

David Dossot — Wed, 19 Apr 2017 14:00:20 -0000

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.

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 19 Apr 2017 13:54:14 -0000

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.

safa fakhfakh posted a comment on discussion Open Discussion

safa fakhfakh — Wed, 19 Apr 2017 13:53:19 -0000

safa fakhfakh modified a comment on discussion Open Discussion

safa fakhfakh — Wed, 19 Apr 2017 10:30:33 -0000

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,

safa fakhfakh posted a comment on discussion Open Discussion

safa fakhfakh — Wed, 19 Apr 2017 10:30:06 -0000

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,

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Mon, 17 Apr 2017 16:11:17 -0000

yes I have already checked the ResultsMap but didn't find anything helpful.

David Dossot posted a comment on discussion Help

David Dossot — Mon, 17 Apr 2017 15:53:59 -0000

Ah sorry, I misunderstood, I thought you wanted to know exactly which set/rule had...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Mon, 17 Apr 2017 15:26:12 -0000

My goal was to know when the engine have modified the input data, so i just added...

David Dossot posted a comment on discussion Help

David Dossot — Mon, 17 Apr 2017 14:37:26 -0000

Even if the logic block had an ID, this wouldn't be what you want because you want...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Mon, 17 Apr 2017 13:02:50 -0000

your suggestion is interesting, i will try to look at it. But I still didn't know...

David Dossot posted a comment on discussion Help

David Dossot — Sat, 15 Apr 2017 01:34:00 -0000

https://github.com/ddossot/NxBRE/blob/master/NxBRE3/Test/FlowEngine/TestBackward...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Fri, 14 Apr 2017 08:24:49 -0000

Do you have an example working with the BackwardChainer class?

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Fri, 14 Apr 2017 08:15:55 -0000

your suggestion is interesting, i will try to look at it. But I still didn't know...

David Dossot posted a comment on discussion Help

David Dossot — Thu, 13 Apr 2017 17:34:52 -0000

Unfortunately there's no way to know the set ID from within the set. So you would...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 13 Apr 2017 16:12:46 -0000

I think you didn't understand what i am trying to do. I have a Set with id="Set1"...

David Dossot posted a comment on discussion Help

David Dossot — Thu, 13 Apr 2017 15:58:30 -0000

The objectId would be the ID of the List that you've put in the context before calling...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 13 Apr 2017 15:52:03 -0000

and what the objctId will be? I didn't understand your suggestion.

David Dossot posted a comment on discussion Help

David Dossot — Thu, 13 Apr 2017 15:30:39 -0000

Have you tried placing an as the first element in ?

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 13 Apr 2017 14:57:28 -0000

I don't need to have an id for each rule, i just want to have the Set id that's all,...

David Dossot posted a comment on discussion Help

David Dossot — Thu, 13 Apr 2017 14:48:16 -0000

Just a string you make up, like "Reject-People-With-Bad-Debt"

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 13 Apr 2017 14:46:58 -0000

I tried it now and it works. Thank you. How to i get the set Id to add it to the...

David Dossot posted a comment on discussion Help

David Dossot — Thu, 13 Apr 2017 14:35:57 -0000

Have you tried using the Add member method on it?

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 13 Apr 2017 08:24:58 -0000

I don't need the testObj , but I didn't know how to add elements to the list with...

David Dossot modified a comment on discussion Help

David Dossot — Tue, 11 Apr 2017 14:54:51 -0000

ERROR! The markdown supplied could not be parsed correctly. Did you forget to surround...

David Dossot modified a comment on discussion Help

David Dossot — Tue, 11 Apr 2017 14:54:24 -0000

ERROR! The markdown supplied could not be parsed correctly. Did you forget to surround...

David Dossot posted a comment on discussion Help

David Dossot — Tue, 11 Apr 2017 14:53:48 -0000

What you're doing with ObjectLookup is equivalent to this in C#: testObj.list("elt1",...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Tue, 11 Apr 2017 08:18:18 -0000

ERROR! The markdown supplied could not be parsed correctly. Did you forget to surround...

David Dossot posted a comment on discussion Help

David Dossot — Tue, 11 Apr 2017 00:27:31 -0000

Congrats on learning further the internals of the Flow Engine, seriously it's great...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Mon, 10 Apr 2017 09:26:33 -0000

I looked at it but there is nothing helpfull ther. But i tried to debug how the execution...

David Dossot posted a comment on discussion Help

David Dossot — Fri, 31 Mar 2017 15:40:01 -0000

Have you checked IBRERuleMetaData.IBRERuleFactory? I was hoping it would help pinpointing...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 30 Mar 2017 09:57:48 -0000

I looked at MetaDataproperty but i didn't find anything about the fired rule. My...

safa fakhfakh modified a comment on discussion Help

safa fakhfakh — Thu, 30 Mar 2017 09:09:20 -0000

Hi i wanted to know what is this Id property https://github.com/ddossot/NxBRE/blob/724f63a976ecdf6247a2d2c02471c81c7807b1cf/NxBRE3/Examples/Login/Login.cs#L60...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 30 Mar 2017 08:42:49 -0000

ERROR! The markdown supplied could not be parsed correctly. Did you forget to surround...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 29 Mar 2017 15:35:19 -0000

ok thank you i will look at it, and post the solution if i find it.

David Dossot posted a comment on discussion Help

David Dossot — Wed, 29 Mar 2017 15:29:23 -0000

Maybe: if you look at the fields in IBRERuleMetaData, you get a lot of information...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 29 Mar 2017 15:14:02 -0000

Thank you. Is there a way to detect the firing of a rule in a specific set?

David Dossot posted a comment on discussion Help

David Dossot — Wed, 29 Mar 2017 14:45:48 -0000

You don't need to implement it, registering a delegate is enough: https://github...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 29 Mar 2017 14:40:54 -0000

Hi , is there an example on how to use the IBREDispatcher to detect rule firing ?...

David Dossot posted a comment on discussion Help

David Dossot — Thu, 23 Mar 2017 14:44:57 -0000

A dynamic invoke set gets the set ID from a context object (via valueId) instead...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 23 Mar 2017 08:26:49 -0000

ERROR! The markdown supplied could not be parsed correctly. Did you forget to surround...

David Dossot modified a comment on discussion Help

David Dossot — Thu, 23 Mar 2017 04:14:53 -0000

You are attempting a dynamic set invocation with valueId when what you wanted was...

David Dossot posted a comment on discussion Help

David Dossot — Thu, 23 Mar 2017 04:11:42 -0000

You are attempting a dynamic set invocation with valueId when what you wanted was...

safa fakhfakh modified a comment on discussion Help

safa fakhfakh — Wed, 22 Mar 2017 15:25:56 -0000

Hi, I want to use the InvokeSet but i keep getting an error : can not invoke set...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 22 Mar 2017 15:24:54 -0000

Hi, I want to use the InvokeSet but i keep getting an error : can not invoke set...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 16 Mar 2017 17:13:46 -0000

Hi, can you send it to me too please?

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 16 Mar 2017 15:55:33 -0000

yes I read the documentation but I didn't really understand how that works. Actually...

David Dossot posted a comment on discussion Help

David Dossot — Thu, 16 Mar 2017 15:12:29 -0000

Did you read chapter 3.3 of the user guide? Binders can be written in C# VB.NET and...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 16 Mar 2017 14:22:51 -0000

Hi, I wanted to use the inference engine as you suggested but I am having trouble...

David Dossot posted a comment on discussion Help

David Dossot — Thu, 02 Mar 2017 16:18:23 -0000

The IBREDispatcher interface allows you to receive notifications when rules are fired....

safa fakhfakh modified a comment on discussion Help

safa fakhfakh — Thu, 02 Mar 2017 12:38:25 -0000

Hi , I want to ask if there is a way to know when no rule have been fired after the...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 02 Mar 2017 12:38:11 -0000

Hi , I want to ask if there is a way to know when no rule have been fired after the...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 01 Mar 2017 18:25:57 -0000

thanks a lot , i will try it.

David Dossot posted a comment on discussion Help

David Dossot — Wed, 01 Mar 2017 17:04:04 -0000

It would be indirect: 1) expose object.prop as fact1 2) have a rule that infers fact2...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 01 Mar 2017 16:37:03 -0000

how can i say for example, if object.prop=value then execute object.method with inference...

David Dossot posted a comment on discussion Help

David Dossot — Wed, 01 Mar 2017 16:30:44 -0000

You can but indirectly, via facts, either with binding or on events. It's more involved...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 01 Mar 2017 16:27:51 -0000

thank you, but i want the forward chaining. in fact i chose the flow engine because...

David Dossot posted a comment on discussion Help

David Dossot — Wed, 01 Mar 2017 16:25:28 -0000

You are correct. Use either the Inference Engine or the Flow Engine + Backward Chainer...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 01 Mar 2017 16:18:48 -0000

that means that it executes the flow of rules only one time, and don't check if the...

David Dossot posted a comment on discussion Help

David Dossot — Wed, 01 Mar 2017 15:53:31 -0000

By default, the Flow Engine doesn't use any chaining, it's just an imperative processor...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 01 Mar 2017 15:50:13 -0000

Thank you for the clarification.

David Dossot posted a comment on discussion Help

David Dossot — Wed, 01 Mar 2017 15:47:49 -0000

Right, the old archives contain an outdated README, I can't really fix that. The...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 01 Mar 2017 15:45:10 -0000

in fact , i have another question , it's regarding the flow engine, does it use forward...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 01 Mar 2017 15:44:15 -0000

thanks. It says LGPL in the README.txt file that we get when downloading Nxbre-3_2_0.zip...

David Dossot posted a comment on discussion Help

David Dossot — Wed, 01 Mar 2017 15:31:53 -0000

NxBRE was initially licensed under LGPL but has been switched to MIT almost 5 years...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Wed, 01 Mar 2017 13:53:13 -0000

Hi, I want to know what's the license of NxBRE: at sourceforge.net they are indicating...

David Dossot posted a comment on discussion Help

David Dossot — Fri, 17 Feb 2017 15:53:21 -0000

NxBRE provides a bunch of static utils to help with relfection calls. NxBRE.Util.DataAccess.GetArrayColumnValue...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Fri, 17 Feb 2017 15:49:19 -0000

I didn't understand how the example you showed me is a solution to my problem, do...

David Dossot posted a comment on discussion Help

David Dossot — Thu, 16 Feb 2017 17:17:14 -0000

Check this out: https://github.com/ddossot/NxBRE/blob/master/NxBRE3/Rulefiles/te...

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 16 Feb 2017 16:39:02 -0000

thanks for the reply. after i located the index with how can I acces...

David Dossot posted a comment on discussion Help

David Dossot — Thu, 16 Feb 2017 16:29:14 -0000

Use an rule alongside the to keep track of the index.

safa fakhfakh posted a comment on discussion Help

safa fakhfakh — Thu, 16 Feb 2017 09:20:34 -0000

Hi, I am new to NxBRE, and i am trying to work with the flow engine, i read the documentation...

David Dossot posted a comment on discussion Help

David Dossot — Mon, 17 Oct 2016 06:36:46 -0000

NxBRE.Util.Logger exposes several TraceSource that you can listen to, using standard...

Rajesh Bansal posted a comment on discussion Help

Rajesh Bansal — Mon, 17 Oct 2016 01:22:20 -0000

Hi, How can i enable tracing in nxbre for rule execution. I want to trace information...

NxBRE released /OldFiles/nxbre-2_5.zip