Entity Linking
Entity Linking (EL) is the task of recognizing (cf. Named Entity Recognition) and disambiguating (Named Entity Disambiguation) named entities to a knowledge base (e.g. Wikidata, DBpedia, or YAGO). It is sometimes also simply known as Named Entity Recognition and Disambiguation.
EL can be split into two classes of approaches:
- End-to-End: processing a piece of text to extract the entities (i.e. Named Entity Recognition) and then disambiguate（消除歧义） these extracted entities to the correct entry in a given knowledge base (e.g. Wikidata, DBpedia, YAGO).
- Disambiguation-Only: contrary to the first approach, this one directly takes gold standard named entities as input and only disambiguates them to the correct entry in a given knowledge base.