2022

Self-Supervised Time Series Representation Learning via Cross Reconstruction Transformer

Zhang, Wenrui, Yang, Ling, Geng, Shijia et al.

Understand

Unsupervised/self-supervised representation learning in time series is critical since labeled samples are usually scarce in real-world scenarios.

  • Existing approaches mainly leverage the contrastive learning framework, which automatically learns to understand the similar and dissimilar data pairs.
  • Nevertheless, they are restricted to the prior knowledge of constructing pairs, cumbersome sampling policy, and unstable performances when encountering sampling bias.
  • Also, few works have focused on effectively modeling across temporal-spectral relations to extend the capacity of representations.

Reading the bibliography…