Advances, Systems and Applications
Table 1 QoS composition methods for three structures
Structure | Sequence | Loop | Choice |
|---|---|---|---|
Response time | \({\sum }_{i=1}^{3}{QoS}_{i}^{RT}\) | \(N*{QoS}_{i}^{RT}\) | \({\sum }_{i=1}^{3}p\left(i\right)*{QoS}_{i}^{RT}\) |
Cost | \({\sum }_{i=1}^{3}{QoS}_{i}^{CT}\) | \(N*{QoS}_{i}^{CT}\) | \({\sum }_{i=1}^{3}{p\left(i\right)*QoS}_{i}^{CT}\) |
Reliability | \({\prod }_{i=1}^{3}{QoS}_{i}^{REL}\) | \({\prod }_{i=1}^{N}{QoS}_{i}^{REL}\) | \({\sum }_{i=1}^{3}{p\left(i\right)*QoS}_{i}^{REL}\) |
Availability | \({\prod }_{i=1}^{3}{QoS}_{i}^{AV}\) | \({\prod }_{i=1}^{N}{QoS}_{i}^{AV}\) | \({\sum }_{i=1}^{3}{p(i)*QoS}_{i}^{AV}\) |
Reputation | Min(\({QoS}_{i}^{REP}\)) | \({QoS}_{i}^{REP}\) | \({\sum }_{i=1}^{3}p\left(i\right)*{QoS}_{i}^{REP}\) |
Security | Min(\({QoS}_{i}^{SE}\)) | Min(\({QoS}_{i}^{SE}\)) | Min(\({QoS}_{i}^{SE}\)) |