动物识别专家系统试验报告

1、题目：动物识别专家系统一.实验目的理解和掌握产生式只是表示方法，能够用选定的编程语言实现产生式系统的规则库。二.实验内容(1)以动物识别系统的产生式规则为例。(2)用选定的编程语言建造规则库和综合数据库，并能对它们进行增加、删除和修改操作。三.实验原理动物识别专家系统是流行的专家系统实验模型，它用产生式r来表示知识，共15条r、可以识别七种动物，这些r既少又简单，可以改造他们，也可以加进新的r,还可以用来识别其他东西的新r来取代这些r。动物识别15条r:ri:IF动物有毛发THEN该动物是哺乳动物r2:IF动物能产奶THEN该单位是哺乳动物r3:IF该动物有羽毛THEN该动物是鸟r4:IF动物

2、会飞AND会下蛋THEN该动物是鸟r5:IF动物吃肉THEN该动物是肉食动物r6:IF动物有犬齿AND有爪AND眼盯前方THEN该动物是食肉动物r7:IF动物是哺乳动物AND有蹄THEN该动物是有蹄动物r8:IF动物是哺乳动物AND是反刍动物THEN该动物是有蹄动物r9:IF动物是哺乳动物AND是食肉动物AND是黄褐色的AND有暗斑点THEN该动物是豹r10:IF动物是黄褐色的AND是哺乳动物AND是食肉AND有黑条纹THEN该动物是虎r11:IF动物有暗斑点AND有长腿AND有长脖子AND是有蹄类THEN该动物是长颈鹿r12:IF动物有黑条纹AND是有蹄类动物THEN该动物是斑马r13:IF

3、动物有长腿AND有长脖子AND是黑色的AND是鸟AND不会飞THEN该动物是鸵鸟r14:IF动物是鸟AND不会飞AND会游泳AND是黑色的THEN该动物是企鹅r15:IF动物是鸟AND善飞THEN该动物是信天翁四.推理树部分推理树如下:五.代码程序是用java编写的规则对象代码：publicclassRulepremise=newprivateArrayList<Integer>ArrayList<Integer>();privateintresultpublicvoidaddPremise(intitem)premise.add(item);publicintsize

4、()returnpremise.size();)publicintgetPremiseAt(intindex)returnpremise.get(index);)publicvoidsetResult(intresult)this.result=result;)publicintgetResult()returnresult;)规则库代码如下：publicclassRuleBaseprivateArrayList<Rule>rules=newArrayList<Rule>();publicintsize()returnrules.size();publicRuleBas

5、e()init();)publicvoidaddRule(Rulerule)rules.add(rule);)publicRulegetRuleAt(intindex)returnrules.get(index);)publicvoidinit()Rulerule1=newRule();rule1.addPremise(0);rule1.setResult(20);rules.add(rule1);Rulerule2=newRule();rule2.addPremise(1);rule2.setResult(20);rules.add(rule2);rule3.addPremise(2);ru

6、le3.setResult(21);rules.add(rule3);Rulerule4=newRule();rule4.addPremise(3);rule4.addPremise(13);rule4.setResult(21);rules.add(rule4);Rulerule5=newRule();rule5.addPremise(19);rule5.setResult(22);rules.add(rule5);Rulerule6=newRule();rule6.addPremise(4);rule6.addPremise(15);rule6.addPremise(12);rule6.s

7、etResult(22);rules.add(rule6);Rulerule7=newRule();rule7.addPremise(20);rule7.addPremise(9);rule7.setResult(23);rules.add(rule7);rule8.addPremise(20);rule8.addPremise(18);rule8.setResult(23);rules.add(rule8);Rulerule9=newRule();rule9.addPremise(20);rule9.addPremise(22);rule9.addPremise(14);rule9.addP

8、remise(11);rule9.setResult(24);rules.add(rule9);Rulerule10=newRule();rule10.addPremise(20);rule10.addPremise(22);rule10.addPremise(11);rule10.addPremise(5);rule10.setResult(25);rules.add(rule10);Rulerule11=newRule();rule11.addPremise(23);rule11.addPremise(6);rule11.addPremise(7);rule11.addPremise(14

9、);rule11.setResult(30);rules.add(rule11);Rulerule12=newRule();rule12.addPremise(23);rule12.addPremise(5);rule12.setResult(26);rules.add(rule12);Rulerule13=newRule();rule13.addPremise(21);rule13.addPremise(6);rule13.addPremise(17);rule13.addPremise(7);rule13.setResult(27);rules.add(rule13);Rulerule14

10、=newRule();rule14.addPremise(21);rule14.addPremise(10);rule14.addPremise(17);rule14.addPremise(8);rule14.setResult(28);rules.add(rule14);Rulerule15=newRule();rule15.addPremise(21);rule15.addPremise(16);rule15.setResult(29);rules.add(rule15);)综合数据库代码如下：publicclassDatabaseArrayList<Integer>db=ne

11、wArrayList<Integer>();publicvoidaddFact(intitem)db.add(item);)publicbooleancontains(intitem)returndb.contains(item);)控制系统代码如下：publicclassMachinepublicstaticStringinference(Databasedb)RuleBaseruleBase=newRuleBase();intresult=0;for(inti=0;i<ruleBase.size();i+)intsize=ruleBase.getRuleAt(i).siz

12、e();booleanflag=truefor(intj=0;j<size;j+)if(!db.contains(ruleBase.getRuleAt(i).getPremiseAt(j)flag=false;break;if(flag)intfact=ruleBase.getRuleAt(i).getResult();db.addFact(fact);if(fact>=24)result=fact;break;switch(result)case 24:return"金钱豹"；case 25:return"老虎"；case 26:return"斑马"；case 27:return"鸵鸟"；case 28:return"企鹅"；case 29:return"信天翁"case 30:return"长颈鹿"de