Table 1.

Frequently-used notations.

Notation	Description
N, i	Set of users and a user.
n	Number of users.
T, t	Deadline and a time slot.
L, $l_j$	Set of locations and the j-th location.
$N_{jt}$	Set of arriving users at a location $l_j$ at time slot t.
$c_i$, $b_i$	User i’s cost and bidding price.
${\tilde{b}}_i$	User i’s new bidding price for allocation.
$c_{\max }$, $c_{\min }$	Maximum and minimum cost.
$q_{it}$, $q_i$, ${\widehat{q}}_i$	User i’s service quality at time slot t, expected service quality and learned expected service quality.
$p_{it}$, $u_{it}$	User i’s payment and utility at time slot t.
$u_0$	Utility of the platform.
$S_{jt}$	Active set of users at location $l_j$ at time slot t.
$n_i$	User i’s number of being randomly selected.
$r_i$, $r_{it}$	User i’s total observed service quality and observed service quality at time slot t.
$b_{-i}$	Others’ bidding prices, except user i.
$b_i^{+}$	User i’s alternate bidding price that is higher than $b_i$.
B	Bid vector of all users with $b_i$ and $b_{-i}$.
$B^{+}$	Alternate bid vector of all users with $b_i^{+}$ and $b_{-i}$.
${\widehat{q}}_{it}(B)$, ${\widehat{q}}_{it}(B^{+})$	User i’s learned expected service quality at time slot t with the bid vector B and $B^{+}$.
$P_{it}(B)$, $P_{it}(B^{+})$	User i’s probability of being selected at time slot t with the bid vector B and $B^{+}$.