A Novel Ant Colony Optimization Algorithm for Large Scale QoS-Based Service Selection Problem

Table 1

The considered attributes, their priorities, and aggregation functions.

Type	Attributes (priority)	Function
Summation	Response time (0.2); Latency (0.1)	𝑞^′(CS)=∑^𝑛𝑗=1𝑞𝑠𝑗
	Compliance (0.1); Best practices (0.1); Documentation (0.1)	𝑞^′(CS)=1/𝑛∑^𝑛𝑗=1𝑞𝑠𝑗
Multiplication	Availability (0.1); Reliability (0.1); Successability (0.1)	𝑞^′(CS)=∏^𝑛𝑗=1𝑞𝑠𝑗
Minimum	Throughput (0.1)	𝑞^′(CS)=min^𝑛𝑗=1𝑞𝑠𝑗