//分为负例   //分为正例


//所有负例         654         603
//所有正例         209        1517


t_t = 1437;
t_f = 289;
f_t = 683;
f_f = 574;


t_p = t_t*1.0/(t_t+f_t)
t_r = t_t*1.0/(t_t+t_f)
f1_t = 2*t_p*t_r/(t_p+t_r)


f_p = f_f*1.0/(f_f+t_f)
f_r = f_f*1.0/(f_t+f_f)
f1_f = 2*f_p*f_r/(f_p+f_r)


f1 = ((t_t+t_f)*f1_t+(f_t+f_f)*f1_f)/(t_t+t_f+f_t+f_f)