[MODULE] - Lexical diversity

[LeonardPuettmannKern]

Please describe the module you would like to add to bricks
Super easy but great indicator for the quality of a text. Can also be used for Cognition.

Do you already have an implementation?

 def lexical_divesity(text):
    word_count = len(text)
    vocab_size = len(set(text))
    return word_count / vocab_size # this is the diversity score

Additional context
Found here: https://btw.informatik.uni-rostock.de/download/workshopband/C2-5.pdf
The actual implementation in the paper is not correct. The correct implementation and many more useful snippets can be found in the book "Natural Language Processing with Python".