Mediated Uncoupled Learning:
      Learning Functions without Direct Input-output Correspondences

             Ikko Yamane 1 2 Junya Honda 3 2 Florian Yger 1 2 Masashi Sugiyama 2 4

              Abstract               tion predicting sentiment of an image (Mittal et al., 2018).
    Ordinary supervised learning is useful when we      Even if we do not have image data labeled with sentiment
    have paired training data of input X and output Y .    information, we might be able to find separate  ...