Micro-Spatial Attention with Sparse Constraint for Self-Supervised Learning for Oleaginous Yeast Image Representation. - Kazuma Ohtomo; Yukina Kitahara; Ryosuke Harakawa; Akihiro Nakamura; Yosuke Shida; Wataru Ogasawara; Masahiro Iwahashi (VCIP, 2023)