2026-06-23
get_records(endpoint = "pubtator") for PubTator3
output as a list of entities and relations
tables. "pubtations" is accepted as a legacy alias.pubtator_context() to add sentence IDs,
sentence-relative entity spans, relation entity labels, relation
sentence anchors, and a sentence lookup table to PubTator output.pubtator_cooccurrence() to count entity
co-occurrence directly from a pubtator_context() result or
contextualized entity table. It is now a count-only helper over sentence
windows; sentence evidence text is handled by joining to
ctx$sentences when needed.pubtator_network() to convert PubTator relations
into graph-ready nodes and edges tables plus a
lean evidence table that maps edges back to relation rows
and same-sentence support.citation_snowball() and
citation_network() helpers for citation expansion and
within-corpus citation-network construction.mesh_keyness() to score a corpus’s MeSH
descriptors against PubMed-wide frequencies (log-odds or Dunning G2),
identifying over- and under-represented terms for corpus
characterization and search refinement.get_records(endpoint = "icites") includes citation-link
list-columns where available and guards slow iCite batches with a
timeout.get_records(endpoint = "pubtations") is retained as a
legacy alias for endpoint = "pubtator".2026-04-21
data_mesh_frequencies, a bundled dataset of MeSH
descriptor frequencies across the full PubMed corpus (39.7 M PMIDs,
April 2026). Columns DescriptorUI,
DescriptorName, n_pmids, and
prop_total. Intended as a baseline for MeSH term enrichment
analyses.pmid_to_ftp() updated to use the PMC Cloud Service on
AWS S3 (pmc-oa-opendata.s3.amazonaws.com) in response to
NCBI’s migration away from the legacy PMC FTP Service (transition period
February-August 2026; FTP decommissioned August 2026). The function
interface is unchanged.2026-01-26
pmid_to_ftp() to convert PMIDs to full-text
download URLs for open-access PMC articles; pass $url to
get_records(endpoint = 'pmc_fulltext').endpoint_info() to provide schema, columns, and
rate limits for each endpoint.data_mesh_embeddings() function).2024-10-15
biocjson format from the API endpoint.2024-05-13
pmc_fulltext endpoint.