A function to extract the edges from a parquet database containing the nodes

Usage

pro_snowball_extract_edges(
  nodes = NULL,
  output = tempfile(fileext = ".snowball"),
  verbose = FALSE
)

Arguments

nodes: Path to the nodes parquet dataset
output: output folder, in which the parquet database containing the edges called edges will be savedp default: temporary directory.
verbose: Logical indicating whether to show a verbose information. Defaults to FALSE

Value

A list containing 2 elements:

nodes: dataframe with publication records. The last column oa_input indicates whether the work was one of the input identifier(s).
edges: publication link dataframe of 2 columns from, to such that a row A, B means A -> B means A cites B. In bibliometrics, the "citation action" comes from A to B.

Examples

if (FALSE) { # \dontrun{

snowball_docs <- pro_snowball(
   identifier = c("W2741809807", "W2755950973"),
   citing_params = list(from_publication_date = "2022-01-01"),
   cited_by_params = list(),
   verbose = TRUE
)

# Identical to above, but searches using paper DOIs

snowball_docs_doi <- oa_snowball(
   doi = c("10.1016/j.joi.2017.08.007", "10.7717/peerj.4375"),
   citing_params = list(from_publication_date = "2022-01-01"),
   cited_by_params = list(),
   verbose = TRUE
)
} # }