Advanced Informatics for Computing Research 4th International Conference, ICAICR 2020, Gurugram, India, December 26–27, 2020, Revised Selected Papers, Part I - Luhach, Ashish Kumar; Jat, Dharm Singh; Bin Ghazali, Kamarul Hawari; Gao, Xiao-Zhi; Lingras, Pawan (Communications in Computer and Information Science, 2021)