Article · Wikipedia archive · Last revised Jun 4, 2026

Automatic content extraction

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

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Jun 4, 2026
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Automatic content extraction (ACE) is a research program for developing advanced information extraction technologies convened by the NIST from 1999 to 2008, succeeding MUC and preceding Text Analysis Conference.

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.

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