Google Research

NY Times Annotated Corpus Dataset


The training data includes 100,834 documents from 2003-2006, with 19,261,118 annotated entities. The evaluation data includes 9,706 documents from 2007, with 187,080 annotated entities.

An empty line separates each document annotation. The first line of a document's annotation contains the NYT document id followed by the title. Each subsequent line refers to an entity, with the following tab-separated fields:

  • entity index
  • automatically inferred salience {0,1}
  • mention count (from our coreference system)
  • first mention's text
  • byte offset start position for the first mention
  • byte offset end position for the first mention
  • MID (from our entity resolution system)