Smartwatch-Based Legitimate User Identification for Cloud-Based Secure Services

Table 4

Statistical results for four different classifiers using accelerometer and gyroscope sensors data.

Metric	Method	Accelerometer sensor						Gyroscope sensor
		User 1	User 2	User 3	User 4	User 5	User 6	User 1	User 2	User 3	User 4	User 5	User 6
TPR	DT	0.9495	0.9483	0.9005	0.9448	0.9455	0.9083	0.9540	0.9188	0.9041	0.9465	0.9401	0.9150
	SVM	0.8393	0.8727	0.7996	0.8580	0.8481	0.8861	0.8805	0.8713	0.8487	0.9192	0.8756	0.8746
	KNN	0.8746	0.8437	0.8646	0.8893	0.8969	0.8489	0.9183	0.7752	0.8589	0.8773	0.9157	0.8811
	NB	0.6412	0.8111	0.6583	0.5917	0.6566	0.6361	0.6927	0.7457	0.6366	0.3963	0.5460	0.5495
TNR	DT	0.9837	0.9897	0.9882	0.9859	0.9811	0.9897	0.9786	0.9942	0.9848	0.9919	0.9770	0.9872
	SVM	0.9730	0.9664	0.9632	0.9749	0.9669	0.9766	0.9648	0.9873	0.9761	0.9819	0.9687	0.9751
	KNN	0.9673	0.9736	0.9722	0.9821	0.9714	0.9745	0.9646	0.9906	0.9767	0.9839	0.9555	0.9677
	NB	0.9197	0.9400	0.9198	0.9258	0.9464	0.9455	0.8888	0.9354	0.9037	0.9105	0.8909	0.9570
FPR	DT	0.0505	0.0517	0.0995	0.0552	0.0546	0.0918	0.0459	0.0812	0.0959	0.0535	0.0599	0.0849
	SVM	0.1607	0.1273	0.2004	0.1419	0.1519	0.1139	0.1195	0.1287	0.1513	0.0808	0.1244	0.1254
	KNN	0.1254	0.1563	0.1354	0.1107	0.1030	0.1511	0.0817	0.2248	0.1411	0.1227	0.0843	0.1189
	NB	0.3588	0.1889	0.3417	0.4084	0.3434	0.3639	0.3072	0.2543	0.3634	0.6037	0.4539	0.4505
FNR	DT	0.0164	0.0104	0.0119	0.0141	0.0189	0.0103	0.0214	0.0057	0.0152	0.0081	0.0229	0.0128
	SVM	0.0269	0.0336	0.0368	0.0250	0.0330	0.0234	0.0352	0.0127	0.0239	0.0181	0.0313	0.0248
	KNN	0.0326	0.0263	0.0278	0.0178	0.0286	0.0255	0.0354	0.0094	0.0234	0.0161	0.0445	0.0323
	NB	0.0803	0.0599	0.0802	0.0741	0.0536	0.0545	0.1112	0.0647	0.0963	0.0895	0.1091	0.0429
PPV	DT	0.9495	0.9483	0.9005	0.9448	0.9455	0.9082	0.9541	0.9188	0.9041	0.9465	0.9401	0.9150
	SVM	0.8393	0.8727	0.7996	0.8580	0.8481	0.8861	0.8805	0.8713	0.8487	0.9192	0.8756	0.8746
	KNN	0.8746	0.8437	0.8646	0.8893	0.8969	0.8489	0.9183	0.7752	0.8589	0.8773	0.9157	0.8811
	NB	0.6412	0.8111	0.6582	0.5916	0.6566	0.6361	0.6928	0.7457	0.6366	0.3963	0.5460	0.5495
NPV	DT	0.9837	0.9896	0.9881	0.9859	0.9811	0.9897	0.9786	0.9942	0.9848	0.9919	0.9770	0.9872
	SVM	0.9730	0.9664	0.9632	0.9749	0.9669	0.9765	0.9648	0.9873	0.9761	0.9819	0.9687	0.9751
	KNN	0.9673	0.9737	0.9722	0.9821	0.9714	0.9745	0.9646	0.9906	0.9767	0.9839	0.9555	0.9677
	NB	0.91975	0.9400	0.9198	0.9259	0.94643	0.9455	0.8888	0.9353	0.9037	0.9105	0.8909	0.9570
SEN	DT	0.9189	0.9498	0.9426	0.9283	0.8900	0.9529	0.8605	0.9742	0.9297	0.9588	0.8749	0.9447
	SVM	0.8544	0.8374	0.8239	0.8777	0.8113	0.8936	0.8212	0.9400	0.8775	0.9064	0.8185	0.8935
	KNN	0.8323	0.8754	0.8632	0.9047	0.8293	0.8931	0.8095	0.9559	0.8849	0.9195	0.7488	0.8565
	NB	0.5606	0.7015	0.5766	0.6028	0.7495	0.7624	0.3432	0.6759	0.5148	0.5984	0.3603	0.8315
SPE	DT	0.9901	0.9893	0.9787	0.9893	0.9911	0.9791	0.9936	0.9811	0.9788	0.9893	0.9896	0.9799
	SVM	0.9698	0.9745	0.9571	0.9704	0.9744	0.9747	0.9778	0.9712	0.9697	0.9846	0.9797	0.9702
	KNN	0.9765	0.9660	0.9725	0.9789	0.9838	0.9625	0.9863	0.9439	0.9708	0.9745	0.9874	0.9738
	NB	0.9413	0.9662	0.9419	0.9226	0.9185	0.9043	0.9718	0.9531	0.9394	0.8176	0.9458	0.8463
FDR	DT	0.0505	0.0517	0.0995	0.0552	0.0545	0.0918	0.0459	0.0812	0.0959	0.05349	0.0599	0.0849
	SVM	0.1607	0.1273	0.2004	0.1419	0.1519	0.1139	0.1195	0.1287	0.1513	0.0808	0.1244	0.1254
	KNN	0.1254	0.1563	0.1354	0.1107	0.1030	0.1511	0.0817	0.2248	0.1411	0.1227	0.0843	0.1189
	NB	0.3588	0.1889	0.3417	0.4084	0.3434	0.3639	0.3072	0.2543	0.3634	0.6037	0.4539	0.4505
FOR	DT	0.0163	0.0104	0.0119	0.0142	0.0189	0.0103	0.0214	0.0057	0.0152	0.0081	0.0229	0.0128
	SVM	0.0269	0.0336	0.0368	0.0250	0.0330	0.0234	0.0352	0.0127	0.0239	0.0181	0.0313	0.02486
	KNN	0.0327	0.0263	0.0278	0.0179	0.0286	0.0255	0.0354	0.0094	0.0233	0.0161	0.0445	0.0323
	NB	0.0803	0.0599	0.0802	0.0741	0.0536	0.0545	0.1112	0.0647	0.0963	0.0895	0.1091	0.0429
ACC	DT	0.9781	0.9826	0.9725	0.9792	0.9762	0.9744	0.9756	0.9798	0.97007	0.9843	0.9716	0.9733
	SVM	0.9518	0.9509	0.9342	0.9547	0.9499	0.9601	0.9517	0.9658	0.9547	0.9719	0.9558	0.9558
	KNN	0.9528	0.9503	0.9540	0.9672	0.9614	0.9492	0.9581	0.9459	0.9564	0.9655	0.9504	0.9522
	NB	0.8814	0.9209	0.8826	0.8724	0.8894	0.8787	0.8737	0.9063	0.8668	0.7811	0.8561	0.8436