Edge Server Placement for Service Offloading in Internet of Things

Table 1

Symbols and corresponding descriptions.

Symbol	Description
ES	The collection of edge servers, ES = {es1, es2, …, esM}
S	The collection of sensors, S = {s1, s2, …, sN}
Z	The number of rounds of the task in the waiting queue
ASL	The average delay of the edge server
TE	Total energy consumption
ALV	The average load variance of the edge server.
K	Number of chromosomes