Entity Linking (EL)

Entity linking is the process of connecting entity mentions in text to their knowledgebase counterparts.

Challenges:

  • entity ambiguity
  • name variants

Approaches:

  • End-to-End: processing a piece of text to extract the entities and then disambiguate these extracted entities to the correct entry in a given knowledge base.
  • 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.

Tasks:

Applications:

  • Prospective information extraction
  • Information retrieval
  • knowledgebase population