proper sorting is not that easy

Trying to sort site-wide search results on most e-commerce sites typically end up a mess, with irrelevant search results being propelled to the top of the list as users sort by price, customer ratings, etc

http://baymard.com/blog/faceted-sorting

Basic NLP with the bash https://gibrown.com/2013/01/26/unix-bi-grams-tri-grams-and-topic-modeling/