Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2014.3547.3554IwunduM.P. Albert-UdochukwukaE.B. 1220141424The main aim of the study was to develop an efficient search
algorithm for locating D-optimal exact design. Within a design class, the procedure
requires not more than 25% search on the total available designs. Specifically,
under some arrangements, there exists a D-optimal exact design within a set
of designs constituting about 25% of the total designs. An interesting property
of the algorithm is that it eliminates as much as 80% of the total available
designs, a lot of which are inferior to the optimal design. Also the new algorithm
gives reduction in the number of determinant evaluations. With some rules of
selection, the algorithm is certain to locate the required D-optimal exact design.
The working of the algorithm has been tested using first order bivariate model
defined on a design region that is supported by the points of the Circumscribed
Central Composite Design.]]>Mitchell, T.J.,197416203210Oladugba, A.V. and M.S. Madukaife,20098107115Onukogu, I.B.,1997Onukogu, I.B.,201212127Onukogu, I.B. and M.P. Iwundu,200767415423Iwundu, M.P.,201032141Iwundu, M.P. and O.A.P. Otaru,201413109119Iwundu, M. and P. Chigbu,20121133146Pazman, A.,1987