Fig. 4.

Visualization of biomedical concepts learned by t-SNE (t-distributed stochastic neighbor embedding) algorithm and embedded in a two-dimensional space. We highlighted five drugs identified as potential new drugs to treat COVID-19. Color refers to semantic type of a particular concept; note that only the eight most frequent semantic types are presented. aapp: Amino Acid, Peptide, or Protein; dsyn: Disease or Syndrome; fndg: Finding, gngm: Gene or Genome; neop: Neoplastic Process; orch: Organic Chemical; phsu: Pharmacologic Substance; topp: Therapeutic or Preventive Procedure. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)