IBGSS: An Improved Binary Gravitational Search Algorithm based search strategy for QoS and ranking prediction in cloud environments. - Nivethitha Somu; M. R. Gauthama Raman; Akshya Kaveri; Akshay Rahul K.; Kannan Krithivasan; V. S. Shankar Sriram (Appl. Soft Comput., 2020)