ma_evaluate | R Documentation |
Evaluate API
ma_evaluate( query, count = 10, offset = 0, orderby = NULL, atts = c("Id", "AA.AuN", "J.JN", "Ti", "Y", "CC"), model = "latest", key = NULL, ... )
query |
(character) query terms |
count |
(intger) number of records to return. default: 10 |
offset |
(intger) record number to start at. default: 0 |
orderby |
(logical) column by which to order. default: none |
atts |
(character) fields to return, in a character vector. See https://docs.microsoft.com/en-us/academic-services/project-academic-knowledge/reference-entity-attributes for details. |
model |
(character) Name of the model that you wish to query. One of 'latest' or 'beta-2015'. Default: latest |
key |
(character) microsoft academic API key, see the |
... |
curl options passed on to crul::HttpClient |
a list of length two, with expr
(character) and
entities
(data.frame)
Query expression syntax https://docs.microsoft.com/en-us/academic-services/project-academic-knowledge/reference-query-expression-syntax
## Not run: # any numeric value that starts with 19 ma_evaluate(query = "Y='19'...") # author name matching, and request certain fields back ma_evaluate(query = "Composite(AA.AuN=='smith')", atts = c('Id', 'AA.AuN')) # matching year 2010 and request Id and Y fields ma_evaluate(query = "Y=2010", atts = c('Id', 'Y')) # range of years: includes only left boundary value: 2010, 2012 ma_evaluate(query = "Y=[2010, 2012)", atts = c('Id', 'Y')) # range by specific dates ma_evaluate(query = "D=['2010-02-03','2010-02-05']", atts = c('Id', 'Y')) # matching author and matching affiliation x <- "Composite(And(AA.AuN='mike smith',AA.AfN='harvard university'))" ma_evaluate(x) ## End(Not run)
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