Can someone explain a bit more on vector space model for words (and documents)? I first saw that approach in prof. Erik Demaine lecture on algorithms [1], and

Can someone explain a bit more on vector space model for words (and documents)? I first saw that approach in prof. Erik Demaine lecture on algorithms [1], and also here. It's fascinating how linear algebra and vector spaces pop up in unexpected places. [1] https://courses.csail.mit.edu/6.006/spring11/lectures/lec01.pdf https://courses.csail.mit.edu/6.006/spring11/lectures/lec01....