At least one author of each accepted paper must attend and present the paper. We are willing to make exceptions in rare cases such as severe illness, visa denial, or a death in the family. If no author(s) will be able to attend, please write back to us (the General Chair, PC Chairs, and Virtual Chair) and explain the reason(s) for your absence. In approved instances, the authors will have the opportunity to present their work in the online preview week, either live or self-recorded. The presentation time will be as in the conference 18 minutes.