Table 9.

F-score performance of the inter- and intra corpus experiments according to the exact matching criterion

Testing data	Training data
	AIMed	GENETAG	GENIA
AIMed	77.68	69.34	66.16
GENETAG	68.96	69.65	63.62
GENIA	78.36	77.80	78.76

"Testing data" represents the corpus used for evaluation. "Training data" represents the corpus which was "added" to the training portion of the "Testing data" corpus for training. For example, the score in the cell AIMed-GENETAG represents the performance of training on the training portion of the AIMed and GENETAG corpora, and testing on the testing portion of AIMed.