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I am using the AuthorRetrieval class to get information from Scopus author records, including their co-authors. I have noticed that the get_coauthors() function only retrieves a maximum of 160 co-authors, even when there are many more co-authors.

import pybliometrics
from pybliometrics.scopus import AuthorRetrieval
import pandas as pd

print(pybliometrics.__version__)

>> 2.7.0

au = AuthorRetrieval(7101875313)
co_au = au.get_coauthors()
len(co_au)

>> 160

au = AuthorRetrieval(35325278500)
co_au = au.get_coauthors()
len(co_au)

>> 160

The records for these authors on scopus.com indicate that they both have 5000+ associated co-authors.

Is there a limit to the amount of co-authors that we can pull from the Scopus API, or from this function in pybliometrics AuthoRetrieval?

Roger Reka
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1 Answers1

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It would appear that 160 is the limit of the get_coauthors() function

Elsevier Developers
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  • I notice that even on scopus.com there is a limit of 150 co-authors. Take Simon I. Hay (https://www.scopus.com/authid/detail.uri?authorId=7101875313&origin=resultslist). Scopus lists the author as having 6404 co-authors, but displays this message: `About co-authors A maximum of 150 co-authors can be displayed. To see the whole list and more author information: view list in search results format.` And then in the search results format, an error message says that only 150 can be displayed. Which Scopus API can provide us with the full set of co-authors? – Roger Reka Nov 18 '20 at 20:34
  • Good to know, will add this to the documentation – MERose Nov 19 '20 at 12:53