Difference between revisions of "Sparql endpoint/Maintenance"
(Created page with "===== Find all event series all/most of whose events have less than N properties? ===== <pre> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX rdfs: <http://w...") |
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Latest revision as of 17:23, 21 February 2017
Find all event series all/most of whose events have less than N properties?
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX smwont: <http://data.semanticweb.org/ns/swc/ontology#>
PREFIX property: <http://openresearch.org/Special:URIResolver/Property-3A>
SELECT ?series
(COUNT(DISTINCT ?event) AS ?eventCount)
(SUM(?propertyCount) as ?propertySum)
((?propertySum / ?eventCount) AS ?avgPropPerEvt)
WHERE
{
?event property:Event_in_series ?series .
{
SELECT ?event (COUNT(DISTINCT ?p) AS ?propertyCount) WHERE {
?event a smwont:ConferenceEvent .
?event ?p ?o .
} GROUP BY ?event ?series
}
}
GROUP BY ?series
HAVING (?avgPropPerEvt < 25)
ORDER BY (?avgPropPerEvt)
LIMIT 10
