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Table 5 Performance of Deid system and Stanford named entity recognizer on development and test sets considering only proper names

From: A system for de-identifying medical message board text

   Deid - Out of the box Deid - Ambig. name list with usernames Deid - Unambig. name list with usernames Stanford NER
DEV Precision 52.1% 51.2% 11.1% 61.7%
  Recall 86.3% 84.2% 86.3% 81.2%
TEST Precision 41.2% 40.2% 7.6% 55.4%
  Recall 85.1% 84.2% 85.6% 85.4%