Neural Linguistic Steganalysis via Multi-Head Self-Attention

Table 1

Detection accuracy with previous linguistic steganalysis methods.

Method		[18]			[19]			[20]			[21]			Ours
Format	bpw	Acc	P	R	Acc	P	R	Acc	P	R	Acc	P	R	Acc	P	R
News	1	0.532	0.517	0.382	0.763	0.739	0.812	0.840	0.869	0.801	0.858	0.858	0.858	0.913	0.930	0.894
	2	0.513	0.535	0.204	0.786	0.762	0.832	0.835	0.867	0.791	0.864	0.915	0.803	0.920	0.923	0.916
	3	0.597	0.679	0.367	0.824	0.767	0.931	0.897	0.909	0.882	0.920	0.922	0.918	0.962	0.966	0.958
	4	0.755	0.831	0.640	0.859	0.797	0.962	0.938	0.962	0.911	0.961	0.979	0.942	0.973	0.981	0.966
	5	0.847	0.918	0.761	0.881	0.829	0.959	0.961	0.976	0.945	0.973	0.988	0.958	0.985	0.983	0.987
IMDB	1	0.577	0.642	0.345	0.767	0.779	0.744	0.787	0.829	0.722	0.845	0.941	0.736	0.901	0.953	0.844
	2	0.713	0.807	0.560	0.849	0.934	0.871	0.869	0.911	0.818	0.918	0.947	0.886	0.957	0.972	0.940
	3	0.840	0.925	0.741	0.90	0.877	0.931	0.916	0.944	0.885	0.941	0.950	0.932	0.966	0.983	0.949
	4	0.909	0.969	0.845	0.937	0.905	0.975	0.962	0.975	0.947	0.976	0.986	0.966	0.987	0.990	0.983
	5	0.909	0.989	0.828	0.929	0.921	0.940	0.977	0.987	0.966	0.990	0.988	0.992	0.995	0.996	0.993
Twitter	1	0.538	0.520	0.387	0.654	0.652	0.658	0.665	0.664	0.670	0.745	0.811	0.621	0.786	0.873	0.657
	2	0.544	0.523	0.399	0.745	0.762	0.712	0.750	0.827	0.631	0.793	0.914	0.647	0.834	0.883	0.770
	3	0.577	0.669	0.303	0.809	0.798	0.826	0.834	0.889	0.764	0.879	0.939	0.812	0.908	0.950	0.861
	4	0.729	0.836	0.570	0.842	0.824	0.871	0.885	0.950	0.813	0.934	0.988	0.879	0.943	0.986	0.899
	5	0.850	0.916	0.770	0.851	0.839	0.870	0.899	0.961	0.832	0.921	0.960	0.879	0.936	0.958	0.911