1 https://en.wikipedia.org/wiki/Image_histogram

  2 https://en.wikipedia.org/wiki/Bag-of-words_model

  3 Sercan O. Arik and Tomas Pfister, “TabNet: Attentive Interpretable Tabular Learning” (2019), https://arxiv.org/abs/1908.07442

  4 Gowthami Some-palli et al., “SAINT: Improved Neural Networks for Tabular Data via Row Attention and Contrastive Pre-Training” (2021), https://arxiv.org/abs/2106.0134