Hi,
I tried your code because it's a novel use of the FuzzyJ toolkit -- I
hadn't seen anyone use Beans with fuzzy properties before. I'm sorry
to tell you that I can't replicate your result -- when I compile and
run the code below, my output is different (and I believe correct.)
First of all, note in your output that when the setTemperatureVal rule
fires, even though you have issued a (watch all) command, you don't
see the shadow fact corresponding to the bean being modified. If the
fact were actually modified, you'd see it being retracted and
reasserted. When I run the code, that's what I see.
Then when the showTemperatureVal rule fires for me, the two graphs
both show the temerature distribution as "ok".
So, the question is, why does it work for me and not for you, with the
exact same code? One possibility is that you're using a different Jess
version than I am. Are you using an early 6.0aX that might have a
relevant bug? Jess 6.0a4, in particular, had a possibly-related issue.
I think wqyivy wrote:
> Hello, everyone
> I meet a very strange problem when I changed the slot value of a fact. I know it's
>time-consuming to read the source code. But I want to explain my problem clearly. I
>am a graduate student. This is part of my thesis. I am eager for help.
> I defined a class beanTest which supports PropertyChangeSupport so that the value
>of its property can change dynamically. I define a property of FuzzyValue type in
>Fuzzy Java Toolkit which can be found in Contributions at
>http://herzberg.ca.sandia.gov/jess/. But when I changed its value, it didn't change
>dynamically. Here is the source code.
>
>
> import java.beans.*;
> import nrc.fuzzy.*;
> import jess.*;
>
> public class beanTest {
> private FuzzyValue temperature;
> private String p1;
> private FuzzyVariable temp;
> public beanTest(String str) {
> try{
> // define our temperature fuzzy variable with terms hot,
> // cold, very hot and medium
> temp = new FuzzyVariable("temperature", 5.0, 65.0, "Degrees C");
> temp.addTerm("cold", new TrapezoidFuzzySet(5.0, 5.05, 10.0, 35.0));
> temp.addTerm("ok", new PIFuzzySet(36.0, 3.5));
> temp.addTerm("hot", new SFuzzySet(37.0, 60.0));
> p1 = "first";
> temperature = new FuzzyValue(temp, str);
> }
> catch (FuzzyException fe){
> System.err.println("Error initializing fuzzy variables/rules\n" + fe);
> System.exit(100);
> }
> }
> public void setp1val(String s){
> setP1(s);
> }
> public void setTempVal(String s){
> try{
> FuzzyValue fv = new FuzzyValue(temp, s);
> setTemperature(fv);
> }
> catch (FuzzyException fe){
> System.err.println("Error initializing fuzzy variables/rules\n" + fe);
> System.exit(100);
> }
> }
>
> public String getP1() {
> return p1;
> }
> public void setP1(String newP1) {
> String oldP1 = p1;
> p1 = newP1;
> propertyChangeListeners.firePropertyChange("p1", oldP1, newP1);
> }
> public void setTemperature(FuzzyValue newTemperature) {
> FuzzyValue oldTemperature = temperature;
> temperature = newTemperature;
> propertyChangeListeners.firePropertyChange("temperature", oldTemperature,
>newTemperature);
> }
> public FuzzyValue getTemperature() {
> return temperature;
> }
>
> private transient PropertyChangeSupport propertyChangeListeners = new
>PropertyChangeSupport(this);
> public synchronized void removePropertyChangeListener(PropertyChangeListener l) {
> propertyChangeListeners.removePropertyChangeListener(l);
> }
> public synchronized void addPropertyChangeListener(PropertyChangeListener l) {
> propertyChangeListeners.addPropertyChangeListener(l);
> }
> }
>
> In file beanTest.clp, type the following code:
> (defclass bt beanTest)
> (bind ?bt (new beanTest "hot"))
> (definstance bt ?bt)
>
> (defrule setTemperatureVal
> ; to change the value of temperature in beanTest
> (bt (OBJECT ?o))
> =>
> (?o setTempVal "ok"))
>
> (defrule showTemperatureVal
> ; to show the value of temperature in two different ways
> (declare (salience -100))
> (bt (temperature ?t)(OBJECT ?o))
> =>
> (bind ?v (?o getTemperature))
> (printout t (?t plotFuzzyValue "*") crlf)
> (printout t (?v plotFuzzyValue "*") crlf))
>
>
>
> Then in Jess Commandline,
> Jess> (watch all)
> TRUE
> Jess> (batch "beanTest.clp")
> ==> f-0 (bt (class <External-Address:java.lang.Class>) (p1 "first") (temperatur
> e <External-Address:nrc.fuzzy.FuzzyValue>) (OBJECT <External-Address:beanTest>))
>
> ==> Activation: setTemperatureVal : f-0
> setTemperatureVal: +1+1+t
> ==> Activation: showTemperatureVal : f-0
> showTemperatureVal: =1=1+t
> TRUE
> Jess> (run 1)
> FIRE 1 setTemperatureVal f-0
> 1
> Jess> (run 1)
> FIRE 1 showTemperatureVal f-0
> Fuzzy Value: temperature
> Linguistic Value: hot (*)
>
> 1.00 *******
> 0.95 *
> 0.90 *
> 0.85 *
> 0.80 *
> 0.75 *
> 0.70
> 0.65 *
> 0.60
> 0.55 *
> 0.50 *
> 0.45
> 0.40 *
> 0.35
> 0.30 *
> 0.25 *
> 0.20
> 0.15 *
> 0.10 *
> 0.05 **
> 0.00*****************************
> |----|----|----|----|----|----|----|----|----|----|
> 5.00 17.00 29.00 41.00 53.00 65.00
> Fuzzy Value: temperature
> Linguistic Value: ok (*)
>
> 1.00 *
> 0.95 *
> 0.90
> 0.85
> 0.80 *
> 0.75
> 0.70
> 0.65 *
> 0.60
> 0.55
> 0.50
> 0.45
> 0.40
> 0.35
> 0.30 *
> 0.25
> 0.20
> 0.15 *
> 0.10
> 0.05
> 0.00************************ **********************
> |----|----|----|----|----|----|----|----|----|----|
> 5.00 17.00 29.00 41.00 53.00 65.00
> 1
> Jess>
> As you can see, the value of slot temperature is not changed dynamically. It still
>keep to its previous value while the temperature value in object has already changed.
>It still keep to its previous value while the temperature value in object has already
>changed. It has already taken me several days to solve it, but no solution comes.
> Any help will be greatly appreciated.
> Ivy
>
>
>
>
>
> -----------------------------------------
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Ernest Friedman-Hill
Distributed Systems Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
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