Cost-Effective and Traffic-Optimal Data Placement Strategy for Cloud-based Online Social Networks. - Lei Zhang 175; Xuejun Li 001; Hourieh Khalajzadeh; Yan Yang; Ruiyue Zhu; Xia Ji 002; Chuanhui Ju; Yun Yang 001 (CSCWD, 2018)

Set-Covering Theory-Based Data Placement Cost Optimization for Online Social Networks. - Xia Ji 002; Ruiyue Zhu; Xuejun Li 001 (SCC, 2019)