§ Сохранённый запрос

Semantics of UDC headings

Which thesaurus concepts stand behind the journal's UDC codes: codes and concepts co-occur in articles. Both are lib:Concept by inference, but the link between them exists only through publications.

Клик по узлу — переход к объекту и его локальному контексту. Наведение — определение или аннотация из графа.

Результаты запроса

UDC code	Concept	Papers
004.89	subject matter	13
004.89	Предметная область	13
004.89	Онтология	9
004.89	ontology	9
004.89	онтология	7
004.822	subject matter	7
004.822	Предметная область	7
338.27	Прогнозирование	7
338.27	forecasting	7
338.27	прогнозирование	7
004.89	Искусственный интеллект	6
004.89	artificial intelligence	6
004.822	Онтология	6
004.822	ontology	6
004.822	онтология	6
620.9	энергетическая безопасность	6
620.9	subject matter	6
620.9	Предметная область	6
338.27	Оптимизация	6
338.27	optimization	6

Показать SPARQL

SELECT ?udc ?label (COUNT(DISTINCT ?p) AS ?n) WHERE {
  ?p imt:hasUDC ?u . ?u skos:notation ?udc .
  ?p dcterms:subject ?c . ?c skos:prefLabel ?label .
} GROUP BY ?udc ?label ORDER BY DESC(?n) LIMIT 20

∑ Journal topic profile ∪ Which thesauri “cover” the journal ∂ Topic dynamics by year ≈ Implicit “similar articles” link ↺ Internal citations † Most cited works and their authors ∈ Where exactly a concept appears in articles ⊢ Formal mathematics of the journal ≔ The journal's control-theory glossary λ Articles for a given term ⋈ Authors in control theory and their terms ¶ Terms in article full texts