1. Institut Teknologi Sepuluh Nopember (ITS) Department of Information Systems, , Surabaya 60111 , Indonesia
2. Universitas Wijaya Putra Department of Informatics, , Surabaya 60197 , Indonesia
3. Institut Teknologi Dan Bisnis Kalla Department of Information Systems, , Makassar 90231 , Indonesia
4. Institut Teknologi Sepuluh Nopember (ITS) Department of Civil Engineering, , Surabaya 60111 , Indonesia
5. National Taiwan University of Science and Technology Department of Industrial Management, , Taipei 10607 , Taiwan