むｘ８８ - 経済統計練習帳

import tool.*;
 
public class pro {
 
    int[] point=new int[31];
   int s,number,datanumber;
   double mu[]=new double[31];
   double sig[]=new double[31];
   double[] p=new double[31];
 
   double[][] px=new double[21][31];
   double[] ps=new double[24];
   double[] delta=new double[50001];
   String[] data=new String[600];
   int[] c=new int[40];
 
    public static void main(String[] args) {
        pro t=new pro();
    }
 
    pro(){
 
 
 
 
         readfile sub2=new readfile();
        sub2.makedata("data.csv","UTF-8");
        data=sub2.data;
        datanumber=sub2.datanumber;     
 
        for(s=2;s<datanumber+1;s++){
        data[s]=rev_csv(data[s]);
        String[] x=data[s].split(",");
        point[s-1]=num_int(x[1]);
        }
 
 
 
  number=21;
 
 
   for(s=1;s<number+1;s++){
  datanumber=datanumber+point[s];   
        }
 
 
  for(s=1;s<11;s++){
  mu[s]=2*s;
  sig[s]=3;
  p[s]=0.1;
  }
  int tr=3;
  for(tr=1;tr<11;tr++){
  double p1=0;
  for(s=1;s<number+1;s++){
  p1=p1+f(s,mu[tr],sig[tr]);
  }
  for(s=1;s<number+1;s++){
  px[tr][s]=f(s,mu[tr],sig[tr])/p1;
  }
  }      
 
  for(s=1;s<number+1;s++){
  double p1=0;
  for(tr=1;tr<11;tr++){
  p1=p1+p[tr]*px[tr][s];
  }
  ps[s]=p1;
  } 
 
  double z=0; 
  for(s=1;s<number+1;s++){
  z=z+(point[s]-datanumber*ps[s])*(point[s]-datanumber*ps[s])/(datanumber*ps[s]);    
  } 
 
  System.out.println(z);
 
  for(tr=1;tr<101;tr++){
 
  for(s=1;s<number+1;s++){
  c[s]=0;    
  }
 
 
  for(s=1;s<datanumber+1;s++){
  int n=randx();    
  c[n]=c[n]+1;
  }
 
 
  z=0; 
  for(s=1;s<number+1;s++){
  z=z+(c[s]-datanumber*ps[s])*(c[s]-datanumber*ps[s])/(datanumber*ps[s]);    
  } 
  System.out.println(tr+","+z);
  }
 
 
  }
 
     int randx(){
 
 
    int s;
    double[] px=new double[100];
    px[1]=ps[1];
    for(s=2;s<number+1;s++){
    px[s]=px[s-1]+ps[s];
    }
 
    double m1=Math.random();
    int nn=1;
    for(s=1;s<number;s++){
    if(m1>px[s])nn=s;
    }
 
 
 
    return nn;
}  
 
 
       int num_int(String str){
 
    int nx;
 
    nx=0;
 
 try{
 
    nx=Integer.parseInt(str);
 
 }catch (Exception e) {}
 
 return nx;
 
 
 
}    
 
    String rev_csv(String str){
 
        String str5=str;
        int px=str5.indexOf("\"");
 
 
 
        while(px>-1){
       str5=rev(str5);
       px=str5.indexOf("\"");   
        }
        return str5;
    }
 
    String rev(String str){
 
        int p1=str.indexOf("\"");
        int p2=str.indexOf("\"",p1+1);
 
     String str1=str.substring(0,p1);   
        String str2=str.substring(p1+1,p2);  
        String str3=str.substring(p2+1,str.length());
        str2=str2.replace(",","");
 
        return str1+str2+str3;
 
    }
 
 
 
 
 
 
       double f(double x,double mux,double sigx){
double pi,f1,f2;
 
        pi=Math.PI;
 
        f2=Math.sqrt(2*pi*sigx*sigx);
        f1=-(x-mux)*(x-mux)/(2*sigx*sigx);
 
        return Math.exp(f1)/f2;
}
 
}