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How do I fetch publication-keywords via API/OAI/FTP from open Access journals ? PubMed or DOAJ or any other platform?

Is there a known API or any method to fetch the "author listed keywords" for all publications in DOAJ.org or PMC open access subset ?

I tried the ftp of PMC open access subset but the XML files only have IDs, abstract, title, author and affiliations as the metadata to any article. I am looking to mass fetch the keywords too listed with each publication.

Also, I saw few threads around the same but still haven't found the answer I was looking for. So have made a new post.

Any help is much much appreciated.

Thanks,

Asmi

Solution

  • Both platforms have OAI-PMH interfaces:

    http://doaj.org/oai.article?verb=Identify

    http://www.pubmedcentral.nih.gov/oai/oai.cgi?verb=Identify

    DOAJ seems to provide keywords in the dc:subject field of its output in the oai_dc format. PubMedCentral provides them in their pmc format, in their <kwd-group/> tag.

    Just use an OAI-PMH client library in your favourite programming language. You can find some here: https://www.openarchives.org/pmh/tools/tools.php