Minimum co-occurrence for adjacent words

[atulpuri]

I really liked this implementation of the algorithm, however, I noticed one discrepancy.

The paper mentions (Section 1.2.3 - Adjoining Keywords) that adjoining keywords must occur at least twice in the same order for them to considered to be as the same phrase. The current implementation doesn't account for this though!

https://www.researchgate.net/publication/227988510_Automatic_Keyword_Extraction_from_Individual_Documents