My PhD student Mehmet Can Yılmaz is working on variational contrastive learning and will defend his thesis soon.
The ICPR paper below is about a semi-supervised method using variational approach, while we have recently proposed a fully unsupervised variational contrastive learning (now in review).
VCL-PL: semi-supervised learning from noisy web data with variational contrastive learning, MC Yavuz, B Yanıkoğlu, Int. Conference on Pattern Recognition, Montreal, Canada, Aug. 20-25, 2022.