Estimating the Concrete Compressive Strength Using Hard Clustering and Fuzzy Clustering Based Regression Techniques

Table 3

MAE and RMSE using Logistic regression for different number of clusters in -means algorithm.

Number of clusters	Cluster number	MAE	RMSE	Number of records	Weighted MAE	Weighted RMSE
1	1	9.99	12.41	1030	9.99	12.41
2	1	10.56	13.04	586	9.75	12.10
	2	8.68	10.87	444
3	1	11.06	13.42	182	9.69	11.93
	2	9.43	11.59	533
	3	9.34	11.64	315
4	1	9.41	11.23	108	9.21	11.45
	2	8.96	11.21	249
	3	10.39	12.79	297
	4	8.39	10.61	376
7	1	10.70	12.49	78	9.24	11.30
	2	9.22	11.45	214
	3	11.01	13.23	246
	4	5.56	7.50	103
	5	9.29	11.29	89
	6	9.00	11.20	171
	7	8.21	9.84	129
10	1	10.74	13.09	54	9.31	11.33
	2	8.01	9.82	159
	3	10.79	13.45	114
	4	6.70	8.64	102
	5	9.65	11.85	86
	6	9.76	11.84	162
	7	8.55	10.28	115
	8	10.06	11.86	150
	9	9.99	12.44	25
	10	10.60	12.38	63