So what we did is we took all the books -- we just ordered them by time -- for each book we take the words and we project them to the space, and then we ask for each word how close it is to introspection, and we just average that.
Então, pegamos todos os livros e os ordenamos por época. Pegamos as palavras de cada livro e as projetamos no espaço, vemos a distância de cada palavra em relação a introspecção e calculamos a média.