FEADO 6.2: D-optimal designs Program
(c) 2010 Design Computing (designcomputing.net/)

Note: Best design for m=4, p=15, and n=15.

try #     	4
seed      	-1407416505
# of iterations	8
det       	1.1693048E12
det*      	0.4250473
det^(-1)  	8.5520898E-13
det^(-1/p)	0.15684529
trace V   	5.5735765
vmax      	2.2113
vbar      	1.4762
G-eff     	45.22%

Design points (and prediction variance):

-1	-1	-1	0	(1.0)
-1	-1	0	-1	(1.0)
-1	-1	1	1	(1.0)
-1	0	-1	1	(1.0)
-1	1	-1	-1	(1.0)
-1	1	0	1	(1.0)
-1	1	1	-1	(1.0)
0	-1	-1	1	(1.0)
0	0	0	0	(1.0)
1	-1	-1	-1	(1.0)
1	-1	0	1	(1.0)
1	-1	1	-1	(1.0)
1	1	-1	1	(1.0)
1	1	0	-1	(1.0)
1	1	1	1	(1.0)

X'X

15	13	13	10	13	-1	-1	-2	1	-0	1	-0	1	-0	-1	
	13	12	9	12	-1	0	-1	0	-0	1	-0	-0	1	-0	
		13	9	12	0	-1	-1	0	-0	0	1	1	-0	-0	
			10	9	-1	-1	-2	1	-0	1	-0	1	-0	-1	
				13	0	0	-1	1	-1	0	-0	-0	-0	-1	
					13	0	1	-0	-0	-1	-0	-0	3	-0	
						13	1	0	0	-0	3	-1	0	0	
							10	-1	-0	-1	-0	-1	0	1	
								13	3	0	-0	0	0	-1	
									12	0	1	0	1	1	
										9	-0	0	1	0	
											12	1	-1	-0	
												9	-0	-0	
													12	0	
														9	

inverse(X'X)

1	-0.3333	-0.3333	-0.0606	-0.3333	0.0303	0.0303	0.0606	-0.0303	-0.0303	-0.0606	0.0303	-0.0606	0.0303	0.0606	
	1.0556	-0.3194	-0.0581	-0.3194	0.0707	-0.0543	-0.0253	0.0543	-0.029	-0.0581	0.029	0.0669	-0.096	-0.0669	
		1.0556	-0.0581	-0.3194	-0.0543	0.0707	-0.0253	0.0543	-0.029	0.0669	-0.096	-0.0581	0.029	-0.0669	
			0.3324	-0.0581	0.0118	0.0118	0.0274	-0.0118	-0.0042	-0.0199	0.0042	-0.0199	0.0042	0.0199	
				1.0556	-0.0543	-0.0543	-0.0253	-0.0707	0.096	0.0669	0.029	0.0669	0.029	0.0581	
					0.0926	-0.0012	-0.0042	0.0012	-0.0026	0.0005	0.0026	0.0005	-0.0286	-0.0005	
						0.0926	-0.0042	0.0012	-0.0026	0.0005	-0.0286	0.0005	0.0026	-0.0005	
							0.1127	0.0042	-0.0033	0.0047	0.0033	0.0047	0.0033	-0.0047	
								0.0926	-0.0286	-0.0005	-0.0026	-0.0005	-0.0026	0.0005	
									0.1001	0.0071	-0.0064	0.0071	-0.0064	-0.0071	
										0.1279	-0.0071	0.0029	-0.0071	-0.0029	
											0.1001	-0.0071	0.0064	0.0071	
												0.1279	-0.0071	-0.0029	
													0.1001	0.0071	
														0.1279	

Note: vmax and vbar are maximum and average prediction variances over candidate points.
Note: FEADO used 0.039 seconds.