Automatic content extraction


Automatic content extraction is a research program for developing advanced information extraction technologies convened by the NIST from 1999 to 2008, succeeding MUC and preceding .

Topics and exercises

Given a text in natural language, the ACE challenge is to detect:
  1. entities mentioned in the text, such as: persons, organizations, locations, facilities, weapons, vehicles, and geo-political entities.
  2. relations between entities, such as: person A is the manager of company B.
  3. events mentioned in the text, such as: interaction, movement, transfer, creation and destruction.
The program relates to English, Arabic and Chinese texts.
The ACE corpus is one of the standard benchmarks for testing new information extraction algorithms.