For citations:

Popova S.V., Khodyrev I.A. Ranking in keyphrase extraction problem: is it suitable to use statistics of words occurrences? Proceedings of the Institute for System Programming of the RAS (Proceedings of ISP RAS). 2014;26(4):123-136. (In Russ.) https://doi.org/10.15514/ISPRAS-2014-26(4)-10