Table 2.

Semantic classes and the classification performance for the semantic model

Class name	Gene	Chemical	Disease	Other
Number of strings	70 832	49 800	7589	113 815
Mean average precision	0.914	0.868	0.706	0.912

The second row contains the number of unique strings in the four different classes. The last row shows the MAP scores from a 10-fold cross-validation to learn how to distinguish each class from the union of the other three.