Security and Cost-Aware Computation Offloading via Deep Reinforcement Learning in Mobile Edge Computing

Table 1

Notations.

Symbols	Definition
	Number of edge servers
	Tasks’ arrival rate
	The duration of the time slot
	The link rate between MD and edge server
	The set of security levels of task offloaded to the th edge server
	The number of arrival tasks at the th time slot
	The user executing queue’s state at the th time slot
	The edge server executing queue’s state at the th time slot
	The immediate cost at the th time slot
	The immediate energy consumption at the th time slot
	The immediate delay at the th time slot
	The number of dropping tasks at the th time slot
	The risk probability constraint of each offloaded task