Table 3: Accuracy of opinionated sentence identification using mined product features: performance comparison of 3 strategies.

ProductStrategy 1Strategy 2Strategy 3
Feature selection using Apriori with compactness and redundancy pruning Feature selection using seed-set expansion approach Feature selection using frequent multi-words with decomposition strategy
PrecisionRecall -MeasurePrecisionRecall -MeasurePrecisionRecall -Measure

Tablet 10.89510.71830.79700.91740.67120.77520.91830.78940.8490
Tablet 20.79960.74770.77280.85930.70460.77430.89650.76470.8254
Tablet 30.87390.69940.77700.94530.62410.75180.92590.74620.8264
Tablet 40.86420.81900.84100.92870.50340.65290.90900.81630.8602
E-book Reader 10.87520.78420.82720.90110.69570.78520.90160.78570.8397
E-book Reader 20.93340.69050.79380.89450.67120.76690.93750.76270.8411
E-book Reader 30.90760.80130.85110.82910.73110.77700.92300.81350.8648

Average:0.87840.75150.81000.89650.65730.75850.91600.78260.8441