Supplementary: SubsidiaryPrototypeAlignment forUniversalDomainAdaptation

The proposed approach may be unsuitable for datasets with very less number of classes. When number of classes are low,our Insight 3(main paper) may not hold, making the pretexttask very difficult tolearn. This might make technology more accessible to organizations and individuals with limited resources. It can also aid applications where data is protected by privacy regulations and hence difficult to collect. The negative consequences might include making these systems more availabletoorganizations orindividuals whotrytoutilize them forillegalpurposes.