Using NearestGraph QoS Prediction Method for Service Recommendation in the Cloud

Algorithm 3

QoS prediction algorithm.

Input: : user-service matrix; : lowest ranking position; : degree of fusion prediction results

Output:

 1: for all   do

 2:  compute the similarity sim by Eq.(2)

 3:  compute the similarity sim by Eq.(3)

 4: end for

 5: for all   do

 6:  similar user set by Eq.(4)

 7:  similar service set by Eq.(5)

 8: end for

 9: Learn by applying Algorithm 1

 10: Learn by applying Algorithm 2

 11: for all   do

 12:  compute by Eq.(8)

 13:  compute by Eq.(9)

 14:  fill by Eq.(10)

 15: end for