ABSTRACT

So far, we've been working with images exclusively. With images, pixel values are arranged in a grid; or several grids, actually, in case there are several channels. However many there may be, all values are of the same type: integers between 0 and 255, for example, or (when normalized) floats in the interval from 0 to 1. With tabular (a.k.a.: spreadsheet) data, however, you could have a mix of numbers, (single) characters, and (single- or multi-token) text.