Algorithm 1 User Characteristic Aware Participant Selection for High-Heat Regions (UCPS-H)

Input:  Task set $\vartheta$, User set N; Output:  1: Participant $u_i$ selected for task ${\theta }_j$, the payment for participants $Y_{c_i}^{total}$ and participants set U;  2: $n_i\leftarrow 1to\left|Z\right|,{\theta }_j\leftarrow 1to\left|\vartheta \right|$;  3: while $bi{d}_{n_i}^{{\theta }_j}\le B_{max}^{{\theta }_j}$ do  4:  Calculate the comprehensive data quality of users for task ${\theta }_j$ through Equation (31); and rank the comprehensive data quality of users in descending order  5:  Assign task ${\theta }_j$ to user $n_i$ with the highest comprehensive data quality;  6:  $U\leftarrow argmax\overline{Qo{C}_{n_i}^{{\theta }_j}}$;  7:  $Y_{n_i}^{{\theta }_j}\leftarrow bi{d}_{n_i}^{{\theta }_j}$;  8:  ${\theta }_j\leftarrow {\theta }_{j+1}$;  9:  return to 3; 10:  if task ${\theta }_j$ achieves the desired data quality then 11:    remove it from $\vartheta$; 12:  end if 13:  if all tasks are assigned or budget runs out then 14:    stop the selection process; 15:  end if 16: end while 17: return $〈X_{n_i}^{{\theta }_j},Y_{n_i}^{{\theta }_j},U〉$;