Table 2.

Detection performance of single-site, multi-site, and combined models for events of different amplitude based on the data of Sensor Group 1.

Data	Amplitude	Models	False alarm	Event detection rate	F1 score	Average detection time (min)
Training	1.0–1.5	Single-site	6	0.36	0.13	57.4
		Multi-site	6	0.71	0.50	52.3
		Combined	10	0.79	0.50	51.6
	1.5–2.0	Single-site	4	0.57	0.21	46.5
		Multi-site	5	0.86	0.59	47.2
		Combined	7	0.93	0.61	45.5
	2.0–2.5	Single-site	3	0.86	0.30	46.8
		Multi-site	5	1.00	0.68	43.3
		Combined	6	1.00	0.69	40.5
	2.5–3.0	Single-site	3	0.93	0.44	43.2
		Multi-site	4	1.00	0.73	39.0
		Combined	5	1.00	0.74	36.1
Testing	1.0–1.5	Single-site	1	0.29	0.02	63
		Multi-site	2	0.71	0.42	55.6
		Combined	2	0.86	0.42	53.8
	1.5–2.0	Single-site	1	0.57	0.11	65.3
		Multi-site	3	0.86	0.53	47.3
		Combined	3	0.86	0.53	47.3
	2.0–2.5	Single-site	1	0.71	0.19	51.4
		Multi-site	3	0.86	0.56	41.7
		Combined	3	0.86	0.56	40
	2.5–3.0	Single-site	1	0.86	0.39	47.3
		Multi-site	3	0.71	0.59	38
		Combined	3	0.86	0.59	40