Table 13.

Positive/negative movement model of the Washington dataset.

	Cosine K-NN	1st PS	2nd PS
Number of training samples	3486	3940	4030
Number of testing samples	872	984	1008
Accuracy of validation	86.2%	88.1%	88.4%
Accuracy of the test set	86.1%	88.1%	88.5%