For single alphabet skills such as C or R it shows every doc/pdf has that skill

[karrtikiyer]

In case of skills such as R or C which are single alphabet, the output isn't as expected. It shows that such skills are available in all the resumes. Looks like it is due to the regex search which finds R & C kind of alphabets in all docs. May be the approach should be relooked at, and instead of regex search, we can look at nlp techniques such NER to identify these skills.