help研究问题自监督学习与域泛化的活动识别方法
OvO（二分类）和单分类结合的框架如何提高多类分类任务的稳定性和精确性？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