An In-depth Benchmarking of Evolutionary and Swarm Intelligence Algorithms for Autoscaling Parameter Sweep Applications on Public Clouds

Table 1

Mathematical formulation parameters.

Parameter	Meaning
T	Set of application’s pending tasks at the beginning of the present autoscaling stage
I	Set of VM types available in the cloud environment for the present stage
N	Number of VM types available in the cloud environment for the present stage
	Minimum number of instances to be requested from the CSP for the VM type i, at the present autoscaling stage
	Maximum number of instances to be requested from the CSP for the VM type i, at the present autoscaling stage
Pricei	Monetary cost of 1 on-demand instance of type i for the duration of the present stage
	Current cost of 1 spot instance of type i for the duration of the present stage
B	Total monetary budget for the present stage