Thread View: alt.lang.basic
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Started by john
Thu, 29 Jun 2000 00:00
Please, need help with EXPERT SYSTEM
Author: john
Date: Thu, 29 Jun 2000 00:00
Date: Thu, 29 Jun 2000 00:00
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Can someone please help me on expert system I am doing my theses about, building an expert system, using Visual Basic. The problem is I am not a computer science student, I am an Industrial engineer student. I have no background in programming although have been catching up with both VB and Expert system. My question is: 1. In building expert system (ES), I have found 2 books that actually explains how to build it using basic (not VB). Problem is both are different in method. The other books dont seem to be clear enough on how to actually program the ES. -- one method is to create a matrix/table to assign values (of 1 or 0)to the solution. with solution being the coloumns and problems being the rows. I created an excel spreadsheet for the rule, and get the user input values for each parameters (row). then ASSUMES that this is solution (coloumn) x. Then another table will calculate using a formula D=D+R*V........(is this familiar/correct formula to be used?) when the result is + then the ASSUMPTION is correct and that particular coloumn is the answer, if -ve then ASSUME another coloumn (do-loop) Problem is, this method doesn't work, I kept getting the wrong answer. 2. the other book creates somekind of database and compares the input to database. Which is to me somewhat similiar to search method. (if x = x then ok) Although this method seems OK but then the system is merely comparing and hence not quite an ES? (the title of the book is something to do with ES though) I am sorry for such long question, any help will be greatly appreciated (GREATLY appreciated) thank you in advance, at least for reading the whole question.
Re: Please, need help with EXPERT SYSTEM
Author: Michael Carton
Date: Wed, 28 Jun 2000 00:00
Date: Wed, 28 Jun 2000 00:00
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john wrote: > > Can someone please help me on expert system > I am doing my theses about, building an expert system, using Visual Basic. > The problem is I am not a computer science student, I am an Industrial > engineer student. > I have no background in programming although have been catching up with > both VB and Expert system. VB is not the usual first choice for an expert system. Prolog or Lisp might be. That said, the choice of language does not come first. First you want to decide what your expert system would do. Then you think a little about how to do it. That'll give you a better idea of how to choose a language. For example, if your problem requires backward chaining algorithm, you' naturally prefer Prolog. The first issue is: what does your Expert System do? What problem can it solve, what situations do you see it being used in? What is its "Domain"? -- MikeC Please reply to the group.
Re: Please, need help with EXPERT SYSTEM
Author: john
Date: Thu, 29 Jun 2000 00:00
Date: Thu, 29 Jun 2000 00:00
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Hi Mike, Thank's very much for replying, Using VB is somewhat a "constraint" for me. As for the Expert system, I need to do it for a case study of an unreliable machines which requires the operator to be experienced. I will need to "capture" his decision, such as what to do when what problems/parameter occurs. So far, I am aware of rule induction method, the if-then method and the one I'm using, which is sort of matrix and value assigning system. (I may be talking rubbish here but I was browsing through many books, so sorry for the lack of understanding) How would you approach this problem? and what book(s) did you use when learning E.S? (I found that most books about this subject is somewhat incomplete....and relies heavily on prolog/natural languages--which is probably good, but not for me) Thank's again Mike. > VB is not the usual first choice for an expert system. Prolog or Lisp > might be. That said, the choice of language does not come first. First > you want to decide what your expert system would do. Then you think > a little about how to do it. That'll give you a better idea of how to > choose a language. For example, if your problem requires backward > chaining algorithm, you' naturally prefer Prolog. > > The first issue is: what does your Expert System do? What problem > can it solve, what situations do you see it being used in? What is > its "Domain"? > > -- > MikeC > > Please reply to the group.
Re: Please, need help with EXPERT SYSTEM
Author: Ted Dennison
Date: Thu, 29 Jun 2000 00:00
Date: Thu, 29 Jun 2000 00:00
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In article <8jfk4a$jhg$1@bugstomper.ihug.com.au>, "john" <mtshark@hotmail.com> wrote: > Using VB is somewhat a "constraint" for me. I suppose you could build a rocket out of silly putty too, if you really wanted to... Is it a money issue? Is your time worth nothing to you? If you want a forward-chaining inference engine that you can use from VB, the smartest thing you could do would be to get hold of the CLIPS ActiveX control for your version of VisualBasic (go to http: //ourworld.compuserve.com/homepages/olsont/ClipsOcxPriceLic.htm ) You can download a 30day trial version. If you are doing this for school, you can get an educational license for $40 (and your school might spring for that). I'd say its easily worth $40 to not have to write my own inference engine. If that's still too much, you can download a VB DLL for CLIPS for free from http://ourworld.compuserve.com/homepages/marktoml/clipstuf.htm . -- T.E.D. http://www.telepath.com/~dennison/Ted/TED.html Sent via Deja.com http://www.deja.com/ Before you buy.
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