1 from sys import stderr  2 #########################  3 TRUE = 1 #定义返回值  4 FALSE = 0  5 FACT_LENGTH = 9  #'''前提与结论总数'''  6 PRMS_LENGTH = 2  #'''每条规则的前提个数'''  7 PREMISE = 7 #'''前提数量'''   8 RULE_LENGTH = 4  #'''规则数量'''  9 LIMIT = 0.5      #'''结论阈值''' 10 AND = 1         #'''规则前提逻辑关系''' 11 OR = 0 12 VH = 0.9       #'''规则前提可信度初始化''' 13 H = 0.7 14 M = 0.5 15 #double Rule_CF[RULE_LENGTH] 16 Rule_CF = [0.0]*(RULE_LENGTH+1) 17 Str = ["E1", "E2", "E3", "E4", "E5", 18 "E6", "E7", "H1", "H", "\0"] 19 Fuzz = [None]*10 20 Input = [None]*PREMISE 21 Repeat = -111   #'''重新输入变量''' 22  23 #'''知识表达''' 24 Sign=[0,0,0,0,0,0,0,0,1] 25 Rulep=[[1,2,0],[4,5,0],[6,8,0],[3,7,0]] 26 Rulec=[[9,'AND'],[8,'AND'],[7,'AND'],[9,'OR']] 27 ## 28 def Max(a, b): #  '''可信度计算''' 29     return a if a>b else b 30 def Min(a, b):   31     return b if a>b else a 32 def Mix(x, y): 33     return (x+y-x*y) 34  35 class fact(object):  #'''定义事实类'''  36     def __init__(self,Num,NamInput): 37         self.Number=Num    #'''事实编号''' 38         self.Active=False  #'''记录事实的激活状态''' 39         self.CF=0  #'''事实可信度''' 40         self.SignNum=0  #'''输出标记''' 41         self.Name=NamInput  #'''事实内容''' 42     def Fuzz(i):   #'''定义可信度模糊函数''' 43         pass 44 ###         45     def Input(self,int): 46         pass 47     def GetName(self): 48         return self.Name     49     def GetNumber(self): 50         return self.Number 51     def GetAct(self): 52         return self.Active 53     def PutAct(self,Act): 54         self.Active=Act 55     def PutFunc(self,f): 56         self.Fuzz=f 57     def GetCF(self): 58         return self.CF 59     def PutCF(self,i): 60         if isinstance(i,int): 61             self.CF=self.Fuzz(i) 62             return self.CF 63         else: 64             self.CF=i     65     def PutSign(self,i): 66             self.Sign =i         67     def GetSign(self): 68         return self.Sign 69  70  71  72 class rule(object):   #'''定义规则类''' 73  74     def GetConc(): 75         return self.Conc 76     def GetName(): 77         return self.Name 78     def __init__(self,P,C,Rule_CF_Val):   79          #'''构造规则函数'''  80         #print(P) 81         self.List=[None]*2 82         self.Name="Rule Name"    83         self.List[0]=P[0] 84         self.List[1]=P[1] 85         self.Logic=C[1] 86         self.Conc=C[0] 87         self.RCFi=Rule_CF_Val 88         self.Next=None     89  90                 91  92     def __del__(self):  #'''构造释放规则空间函数''' 93         #delete Name 94         #delete []List 95         pass 96  97     def Query(self):  #  '''构造推理函数''' 98         sign=0 99         temps=['']*10100         choose=""101         #fact* (*temp)=Fact102         temp=Fact103         while (sign
     
      0):109                 sign=sign+1110                 temp=Fact111             else:112                 temp[index].Input(temp[index].GetNumber())113                 choose=input() #scanf("%s",choose)114                 # flushall()115                 print()                116                 if choose.lower()=="q":117                     return TRUE118                 if str(int(choose))!= choose :119                     continue120                 if temp[index].PutCF(int(choose))==int(Repeat):121                     continue122                 temp[index].PutAct(TRUE)123         for index in range(len(temp)):124             if(temp[index].GetNumber()==self.Conc): break125         if(temp[index]==None): return FALSE126         temp[index].PutCF(Mix(temp[index].GetCF(),self.CF()))127         temp[index].PutAct(1)128         return FALSE129 130     def CF(self):  #'''构造可信度推理函数'''131         if self.Logic:132             i=Min(Fact[self.List[0]-1].GetCF(),Fact[self.List[1]-1].GetCF())133             i=i*self.RCFi134             return i135 136      137      #################138 ##139 Fact=[fact]*FACT_LENGTH140 141 #########################142 def Init():  #'''初始化函数'''143     DefFuncArray()144     DefInput()145     DefRule_CF()146 147 148 def Input1(i):149      print("按q或Q退出")150      print("请输入事实:E[",i,"的可信度")151      print("可信度为：") 152      print(" [1]高")153      print(" [2]中")154      print(" [3]低")155 156 def Input2(i=3):157      print("按q或Q退出")158      print("请输入事实 E[",i,"]数值[30-45]：")  159 160 def Input3(i=4):161      print("按q或Q退出")162      print("请输入事实 E[",i,"]数值[60,160]：")163 164 def Fuzz1(sign):165     switcher = {166         1: VH,167         2: H,168         3: M,169     }170     if(sign in switcher.keys()):171         return switcher[sign]172     else:173         stderr.write("请重新输入！")174         return Repeat    175 176 177 def Fuzz2(sign):178     if sign<30 or sign>45:179         stderr.write("请重新输入！")180         return Repeat181     i=(sign-37.0)/9.0182     return i if i>0 else -i183 184 def Fuzz3(sign):185     if sign<60 or sign>160:186         stderr.write("请重新输入！")187         return Repeat188 189     i=(sign-60.0)/100.0190     return(i)191 192 def DefFuncArray():193     for i in range(4):194         Fuzz[i]=Fuzz1195     Fuzz[4]=Fuzz2196     Fuzz[5]=Fuzz3197 198 def DefInput():199     for i in range(4):200         Input[i]=Input1201     Input[4]=Input2202     Input[5]=Input3203 204 #'''定义规则的可信度'''205 def DefRule_CF():206     Rule_CF[0]=0.9207     Rule_CF[1]=1.0208     Rule_CF[2]=0.9209     Rule_CF[3]=0.9210 211 212 def main():213     #rule *Rule,*R    214     #int i=0215     Init()216     #while(*Str[i]) #   '''激活事实对象集'''217     for i in range(len(Fact)):218         Fact[i]=fact((i+1),Str[i])219         #print(Fact[i].GetName())220         Fact[i].PutSign(Sign[i])221     for s in range(PREMISE):222         Fact[s].Input=Input[s]223         Fact[s].PutFunc(Fuzz[s])224 225     Rule=None226     for i in range(RULE_LENGTH-1,-1,-1): #'''激活规则对象集'''227         if(i<0): return FALSE  228         print(i)      229         R=rule(Rulep[i],Rulec[i],Rule_CF[i])230         R.Next=Rule231         Rule=R232 233     R=Rule234     while(True):235            if(R.Query()): break236            R=R.Next237            if(not R): break238 239     #for(i=0;i
      
       LIMIT and Fact[i].GetSign()==1:242                 Fact[i].PutSign(0)243                 print(" 结论为：")244                 print(Fact[i].GetName())245                 print(" 其可信度为：")246                 print(Fact[i].GetCF())247 248     print("运行结束。")249     input()250     return TRUE251 252 if __name__=='__main__':253     main() 254