help研究问题自监督学习与域泛化的活动识别方法
如何解决活动识别中因数据类别不平衡和训练-测试分布不一致导致的分类性能下降问题？UbiComp '21Triple-O for SHL Recognition Challenge: An Ensemble Framework for Multi-class Imbalance and Training-testing Distribution Inconsistency by OvO Binarization with Confidence Weight of One-class Classification