I think Katie Truong wrote: > Dear Jess Support Team, > > I started writing a program that develops a small knowledge system for health > assessment and longevity planning. The health assessment system will evaluate a > persons current health status based on input values for predefined risk factors and > behavioral influences on longevity. The program will ask the user a number of > questions about his vital statistics and lifestyle habits. Based on the answers > provided, the system will predict the persons longevity. > > I am having problems understanding how to translate my rules into jess codes. > Therefore, I would like to ask for your assistance in getting me started with this > part. I've attached my codes to this e-mail; also, I've made a list of the rules I > need to add to my program. > > Thank you for your help in advance! > Katie Truong
It looks like you started with the Tax Forms Advisor from "Jess in Action", but you removed a lot of code -- actually you removed too much. If you're going to use this framework, then you need to leave everything in the "ask" module intact. In any case, the point of the framework you're adopting is that there's a list of questions, some of which depend on the answers to other questions; after all the relevant questions are asked, the system makes some decisions based on the answers. In the book, the requirements for and dependencies between the questions are encoded in rules in the "interview" module, while the rules that make the final decisions are in the "recommend" module. If you're going to use the framework, then you need to do things the same way. I'd recommend re-reading chapter 11 and working from there. Now, it's an open question whether you need to use this framework or not; if you always want to ask te same questions in the same order, it would be simpler just to write code that asks them straightaway. Only then, once you've written the code to ask the questions and gotten things set up such that the working memory includes the answers in some useable form, can you proceed to write the rules that encode the decision table listed below. But once all the answers are in working memory (and you've also chosen a representation for the results of the decisions) writing those rules is easy. > > Rule No.If > Then1relative_weight=normalval=yes2heart_disease_risk=below_averagehddanger=low3age=25_or_less > and gender=mthen base_longevity=724weight=110_or_less and frame=small and > gender=frelative_weight=normal5cholesteral=low and > fat=highheart_desease_risk=below_average6salt=highblood_pressure=above_average7relative_weight=obese > and heart_disease_risk=above_average and blook_pressure=above_average and > smoker=yesoutlook=bleak8race=black and > origin=mediterraneanrisk=high9personality=aggressivepersonality_type=type_a10alcohol_consumption=moderateadd=good11outlook=bleak > and risk=unknown and add=goodfactor=none12base_longevity=72 and > factor=nonelongevity=67_years > --------------------------------------------------------- Ernest Friedman-Hill Science and Engineering PSEs Phone: (925) 294-2154 Sandia National Labs FAX: (925) 294-2234 PO Box 969, MS 9012 [EMAIL PROTECTED] Livermore, CA 94550 http://herzberg.ca.sandia.gov -------------------------------------------------------------------- To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]' in the BODY of a message to [EMAIL PROTECTED], NOT to the list (use your own address!) List problems? Notify [EMAIL PROTECTED] --------------------------------------------------------------------
