Advances, Systems and Applications
Table 1 Definitions of symbols used in algorithms 1, 2 and 3
From: Near real-time optimization of fog service placement for responsive edge computing
Symbol | Definition |
|---|---|
E | all edge nodes in the service topology |
F | all fog nodes in the swirl |
Ex | an edge node in the service topology |
|E| | the number of items in E |
Fx | a fog node in the service topology |
|F| | the number of items in F |
e | an edge node without a service provider |
F(e) | fog nodes ordered by distance from e |
E(Fx) | edge nodes serviced by Fx |
A | set of active fog nodes |
De,f | distance between edge node e and fog node f |
De | distances of edge node e to all fog nodes |
d | a distance according to the chosen metric |
dmax | maximum distance between an edge node and fog node |
Rx,f | current level of resource x on fog node f |
RLx,f | limit for resource x on fog node f |
LLx,f | lower limit for resource x on fog node f |
RDx | default resource x increase for a service client |