Discovering Insightful Rules among Truck Crash Characteristics using Apriori Algorithm

Table 2

Number of rules by combination of minimum support and confidence.

α/β	0.1	0.2	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1
0.01	851,955	783,385	705,858	641,263	570,749	473,965	340,999	206,040	102,130	6,471
0.02	215,951	202,489	183,575	167,520	149,725	90,951	86,910	51,382	24,605	803
0.03	90,379	85,715	78,150	71,446	63,969	53,177	36,305	21,123	9,674	228
0.04	46,854	44,698	40,979	37,524	33,692	27,962	18,619	10,525	4,421	97
0.05	27,952	26,847	24,753	22,690	20,474	17,096	11,187	6,237	2,484	56
0.06	13,775	13,182	12,242	10,934	9,815	8,101	5,417	3,366	1,462	25
0.07	9,183	8,840	8,232	7,334	6,639	5,529	3,641	2,220	835	16
0.08	6,475	6,263	5,827	5,184	4,718	3,932	2,561	1,525	512	9
0.09	4,741	4,600	4,301	3,835	3,507	2,929	1,873	1,110	358	7
0.1	3,626	3,531	3,312	2,941	2,699	2,267	1,458	872	285	4
0.11	2,763	2,712	2,547	2,266	2,076	1,750	1,115	662	205	1
0.12	2,153	2,122	2,002	1,766	1,629	1,371	858	494	145	1
0.13	1,688	1,667	1,575	1,396	1,284	1,082	656	366	95	1
0.14	1,306	1,288	1,214	1,089	1,001	842	501	273	64	1
0.15	1,073	1,059	1,003	905	831	698	407	207	43	—
0.16	884	876	835	756	696	576	326	160	32	—
0.17	720	713	688	626	578	484	272	135	24	—
0.18	587	582	566	510	479	394	208	95	16	—
0.19	507	505	492	447	421	351	181	84	13	—