权重练习

public class Weight {
    public static void main(String[] args) {

        Date now =DateUtils.string2Date("2014-02-20 24", "yyyy-MM-dd HH");
        Date dataTime = DateUtils.string2Date("2014-02-20", DateUtils.PATTERN_DATE);        
        double day=1D;    //总天 
        double dv=1D;         //总访问数
        
                
        double t=  0.7D* ( 86400000D/(now.getTime() - dataTime.getTime())) ; //时间影响 时间越少，占比越大        
         double n=0.3D*(dv/(5D*day *0.7))  ;    //访问次数影响 访问次数越多，占比越大
        double weight = t+n ;

 
        System.out.println(t);
        System.out.println(weight);
        
 
     }
}