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The need for open scientific knowledge graphs is ever increasing. While thereare large repositories of open access articles and free publication indexes,there are still few free knowledge graphs exposing citation networks, and oftentheir coverage is partial. Consequently, most evaluation processes based oncitation counts rely on commercial citation databases. Things are changingthanks to the Initiative for Open Citations (I4OC, https://i4oc.org) and theInitiative for Open Abstracts (I4OA, https://i4oa.org), whose goal is tocampaign for scholarly publishers to open the reference lists and the othermetadata of their articles. This paper investigates the growth of the openbibliographic metadata and open citations in two scientific knowledge graphs,OpenCitations' COCI and Crossref, with an experiment on the Italian NationalScientific Qualification (NSQ), the National process for University Professorqualification which uses data from commercial indexes. We simulated theprocedure by only using such open data and explored similarities anddifferences with the official results. The outcomes of the experiment show thatthe amount of open bibliographic metadata and open citation data currentlyavailable in the two scientific knowledge graphs adopted is not yet enough forobtaining results similar to those provided using commercial databases.

Can we assess research using open scientific knowledge graphs? A case study within the Italian National Scientific Qualification