Extracting Product Features and Opinion Words Using Pattern Knowledge in Customer Reviews

Table 4

The performance comparison of Hu and Liu’s approach and our approach for feature extraction.

	Hu and Liu’s approach			Our approach
	Recall	Precision	F-measure	Recall	Precision	F-measure
Apex	0.797	0.743	0.769	0.970	0.782	0.866
Canon	0.822	0.747	0.788	0.921	0.739	0.820
Creative	0.818	0.692	0.750	0.762	0.696	0.728
Nikon	0.792	0.710	0.749	0.812	0.712	0.759
Nokia	0.761	0.718	0.739	0.821	0.736	0.776
Average	0.80	0.72	0.758	0.857	0.733	0.790