Coverage of open citations in DOAJ journals

We download from the DOAJ Public data dump the article metadata in JSON format in order to collect all the article DOIs in DOAJ (doaj_articles_data.json). Then we open the file inside the python script, as indicated in the code below:

import json

# Opening JSON file
f = open('doaj_articles_data.json')

# returns JSON object as
# a dictionary
doaj_articles_data = json.load(f)

# Closing file
f.close()

Once we have obtained the JSON file, we establish a connection with OpenCitations REST API FOR COCI, using th e python library request.

import requests

r = requests.get("https://w3id.org/oc/index/coci/api/v1/metadata/<DOI>")

Through the API we can collect all the field corresponding to the DOIs of the DOAJ articles. All the results of the request to the API are stored inside another JSON file (DOIs_API_OUTPUT.json).

list_DOIs_API_OUTPUT = list()

for dois in doaj_articles_data:
    r = requests.get(f"https://w3id.org/oc/index/coci/api/v1/metadata/{dois}")
    list_DOIs_API_OUTPUT.append(r)

with open('list_DOIs_API_OUTPUT.json', 'w') as f:
    json.dump(list_DOIs_API_OUTPUT, f)

Then we divide the articles by the corrisponding journals.

We select and sum all the citation_count in the metadata of DOIs that come from each of the journals. We also collect for each journal all citations made to the articles of the journal.

The result will be a citations . json with all of the citations for each journal and DOAJ_journals.csv will be updated with a counter of the citations coming to the journals ( citations_count ).

We select and sum all of the references_count of DOIs that come from each of the journals. We collect for each journal all citations made by the articles of the journal.

The result will be a references . json with all of the citations for each journal and DOAJ_journals.csv will be updated with a counter of the citations done by the journals ( references_count ).

We check if the citing DOI in the citations of references.json and the cited DOI in the citations of citations.json is open by looking at the oa_link.

The result will be open_citations.json and open_references.json with all of the citations for each journal and DOAJ_journals.csv will be updated with a counter of the open citations coming and done by the journals ( open_citations_count , open_references_count ).

We combine all of the citations involving open access journals. We group them based on the creation_date, taking just the year, probably using a dataframe of the pandas library in python

The result will be open_access_citations_by_year . json of all of these citations for every year .that was found.

We visualize our results with python libraries.

We specifically visualize open_access_citations_by_year . json in a graph.

We publish all the CSV and JSON data that we gathered.