Table 4. Test accuracy with 100 labeled reviews for semi-supervised learning.

Type	MOV	KIT	ELE	BOO	DVD
Spectral	67.3	63.7	57.7	55.8	56.2
TSVM	68.7	65.5	62.9	58.7	57.3
DBN	71.3	72.6	73.6	64.3	66.7
PIV	–	78.6	70.0	60.1	49.5
HDBN	72.2	74.8	73.8	66.0	70.3