4th International Conference on Geoinformatics and Data Analysis (ICGDA 2021), held in virtual platform. On behalf of the Organizing Committee, we wish to express our heart-felt appreciation to the conference chairs, keynote and panel speakers. We would like to express our gratitude and appreciation to all of the committee members and reviewers who helped us maintain the high quality of manuscripts included in the proceedings. We also express our sincere thanks to those who contributed to the success of ICGDA 2021 but whose names may not be listed.
Prof. Salah Bourennane from Ecole Centrale Marseille, France delivering Opening remarks
Prof. Hui Xiong (IEEE Fellow) from Rutgers, The State University of New Jersey, USA giving his speech "Mobile Analytics: Prospects and Opportunities"
Prof. Schahram Dustdar (IEEE Fellow) from Vienna University of Technology, Austria giving his keynote speech "Edge Intelligence: The Convergence of Humans, Things, and AI"
Prof. Georg Gartner from Vienna University of Technology, Austria giving his keynote speech "Location-based Services: Evolution and Development"