These schemes were used to annotate corpora that are often used in research on temporal expression recognition and normalisation: the series of corpora used for training and evaluation in the Automatic Content Extraction (ACE) program 6 run in 2004, 2005 The ACE corpora were prepared for the development and evaluation of systems participating in the ACE program.
the evaluation corpora have never been publicly released, and thus are currently, for all practical purposes, unavailable.