mirror of
https://github.com/marcin-szczepanski/jFuzzyLogic.git
synced 2024-12-22 17:30:29 +01:00
212 lines
5.9 KiB
JavaScript
212 lines
5.9 KiB
JavaScript
//--------------------------------------------------------------------------------
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// Code generated by jFuzzyLogic
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//--------------------------------------------------------------------------------
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function ruleAccumulationMethod_max(defuzzifierValue, valueToAggregate) {
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return (defuzzifierValue > valueToAggregate ? defuzzifierValue : valueToAggregate);
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}
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function ruleActivationMethod_min(degreeOfSupport, membership) {
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return (degreeOfSupport < membership ? degreeOfSupport : membership);
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}
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function ruleConnectionMethod_and(antecedent1, antecedent2) {
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return (antecedent1 < antecedent2 ? antecedent1 : antecedent2);
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}
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function ruleConnectionMethod_or(antecedent1, antecedent2) {
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return (antecedent1 > antecedent2 ? antecedent1 : antecedent2);
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}
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class FunctionBlock_tipper {
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// VAR_INPUT
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food;
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service;
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// VAR_OUTPUT
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tip;
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// FUZZIFY food
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food_delicious;
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food_rancid;
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// FUZZIFY service
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service_excellent;
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service_good;
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service_poor;
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// DEFUZZIFY tip
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defuzzify_tip;
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// Constructor
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constructor() {
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this.tip = 0.0;
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this.defuzzify_tip = new Array(1000);
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}
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// Calculate function block
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calc() {
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this.reset();
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this.fuzzify();
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this.calc_No1();
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this.defuzzify();
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}
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// RULEBLOCK No1
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calc_No1() {
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// RULE 1 : IF (service IS poor) OR (food IS rancid) THEN tip IS cheap;
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let degreeOfSupport_1 = 1.0 * (ruleConnectionMethod_or(this.service_poor, this.food_rancid));
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if (degreeOfSupport_1 > 0) {
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for (let i = 0; i < 1000; i++) {
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let x = 0.0 + i * 0.03;
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let membership = this.membership_tip_cheap(x);
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let y = ruleActivationMethod_min(degreeOfSupport_1 , membership);
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this.defuzzify_tip[i] = ruleAccumulationMethod_max(this.defuzzify_tip[i], y);
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}
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}
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// RULE 2 : IF service IS good THEN tip IS average;
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let degreeOfSupport_2 = 1.0 * (this.service_good);
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if (degreeOfSupport_2 > 0) {
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for (let i = 0; i < 1000; i++) {
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let x = 0.0 + i * 0.03;
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let membership = this.membership_tip_average(x);
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let y = ruleActivationMethod_min(degreeOfSupport_2 , membership);
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this.defuzzify_tip[i] = ruleAccumulationMethod_max(this.defuzzify_tip[i], y);
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}
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}
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// RULE 3 : IF (service IS excellent) AND (food IS delicious) THEN tip IS generous;
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let degreeOfSupport_3 = 1.0 * (ruleConnectionMethod_and(this.service_excellent, this.food_delicious));
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if (degreeOfSupport_3 > 0) {
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for (let i = 0; i < 1000; i++) {
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let x = 0.0 + i * 0.03;
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let membership = this.membership_tip_generous(x);
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let y = ruleActivationMethod_min(degreeOfSupport_3 , membership);
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this.defuzzify_tip[i] = ruleAccumulationMethod_max(this.defuzzify_tip[i], y);
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}
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}
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}
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// Defuzzify
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defuzzify() {
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let sum_tip = 0.0;
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let wsum_tip = 0.0;
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let x;
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for (let i = 0; i < 1000; i++) {
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x = 0.0 + i * 0.03;
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sum_tip += this.defuzzify_tip[i];
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wsum_tip += x * this.defuzzify_tip[i];
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}
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if (sum_tip == 0) {
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sum_tip = 1.0;
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}
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this.tip = wsum_tip / sum_tip;
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}
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// Fuzzify all variables
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fuzzify() {
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this.food_delicious = this.membership_food_delicious(this.food);
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this.food_rancid = this.membership_food_rancid(this.food);
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this.service_excellent = this.membership_service_excellent(this.service);
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this.service_good = this.membership_service_good(this.service);
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this.service_poor = this.membership_service_poor(this.service);
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}
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// Membership functions
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membership_food_delicious(x) {
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if (x <= 7.0) return 0.0;
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if (x > 9.0) return 1.0;
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if (x <= 9.0) return 0.0 + (1.0 - 0.0) * ((x - 7.0) / (9.0 - 7.0));
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}
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membership_food_rancid(x) {
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if (x <= 0.0) return 1.0;
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if (x > 3.0) return 0.0;
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if (x <= 1.0) return 1.0 + (1.0 - 1.0) * ((x - 0.0) / (1.0 - 0.0));
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if (x <= 3.0) return 1.0 + (0.0 - 1.0) * ((x - 1.0) / (3.0 - 1.0));
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}
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membership_service_excellent(x) {
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if (x <= 6.0) return 0.0;
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if (x > 9.0) return 1.0;
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if (x <= 9.0) return 0.0 + (1.0 - 0.0) * ((x - 6.0) / (9.0 - 6.0));
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}
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membership_service_good(x) {
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if (x <= 1.0) return 0.0;
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if (x > 9.0) return 0.0;
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if (x <= 4.0) return 0.0 + (1.0 - 0.0) * ((x - 1.0) / (4.0 - 1.0));
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if (x <= 6.0) return 1.0 + (1.0 - 1.0) * ((x - 4.0) / (6.0 - 4.0));
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if (x <= 9.0) return 1.0 + (0.0 - 1.0) * ((x - 6.0) / (9.0 - 6.0));
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}
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membership_service_poor(x) {
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if (x <= 0.0) return 1.0;
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if (x > 4.0) return 0.0;
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if (x <= 4.0) return 1.0 + (0.0 - 1.0) * ((x - 0.0) / (4.0 - 0.0));
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}
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membership_tip_average(x) {
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if (x <= 10.0) return 0.0;
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if (x > 20.0) return 0.0;
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if (x <= 15.0) return 0.0 + (1.0 - 0.0) * ((x - 10.0) / (15.0 - 10.0));
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if (x <= 20.0) return 1.0 + (0.0 - 1.0) * ((x - 15.0) / (20.0 - 15.0));
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}
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membership_tip_cheap(x) {
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if (x <= 0.0) return 0.0;
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if (x > 10.0) return 0.0;
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if (x <= 5.0) return 0.0 + (1.0 - 0.0) * ((x - 0.0) / (5.0 - 0.0));
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if (x <= 10.0) return 1.0 + (0.0 - 1.0) * ((x - 5.0) / (10.0 - 5.0));
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}
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membership_tip_generous(x) {
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if (x <= 20.0) return 0.0;
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if (x > 30.0) return 0.0;
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if (x <= 25.0) return 0.0 + (1.0 - 0.0) * ((x - 20.0) / (25.0 - 20.0));
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if (x <= 30.0) return 1.0 + (0.0 - 1.0) * ((x - 25.0) / (30.0 - 25.0));
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}
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// Print
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print() {
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console.log("Function block tipper:\n");
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console.log(" Input %s: %f\n", "food" , this.food);
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console.log(" %s: %f\n", "food_delicious" , this.food_delicious);
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console.log(" %s: %f\n", "food_rancid" , this.food_rancid);
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console.log(" Input %s: %f\n", "service" , this.service);
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console.log(" %s: %f\n", "service_excellent" , this.service_excellent);
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console.log(" %s: %f\n", "service_good" , this.service_good);
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console.log(" %s: %f\n", "service_poor" , this.service_poor);
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console.log(" Output %s: %f\n", "tip" , this.tip);
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}
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// Reset output
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reset() {
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for (let i = 0 ; i < 1000; i++) {
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this.defuzzify_tip[i] = 0.0;
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}
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}
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};
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function main(food, service) {
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// Create function blocks
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const tipper = new FunctionBlock_tipper();
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// Parse input
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tipper.food = food;
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tipper.service = service;
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// Calculate
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tipper.calc();
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// Show results
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tipper.print();
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return [tipper.tip];
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}
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