徐彥旻,黃韋智,張奕凡
identify crowded area
roughly evaluate each area
$ cost(d,\mu_{cp},\mu_t,\sigma_t)= d - \mu_{cp} + f(\mu_t,\sigma_t) \\where \quad f(\mu_t,\sigma_t)=c-w_1\mu_t+w_2\sigma_t $
$ \left\{\begin{matrix} c=10 ,\quad for \quad\mu_t < s_1 \\ c= 0, w_1 << w_2 ,\quad for\quad s_1 < \mu_t < s_2 \\ c=-10 ,\quad for\quad s_2 < \mu_t \end{matrix}\right.\\ $