Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"D-optimality"”.
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Item selection methods in multidimensional computerized adaptive testing adopting polytomously-scored items under multidimensional generalized partial credit model
… examined include Fisher information based D-optimality (D-optimality), Kullback-Leibler information index (KI), mutual information (MI), and continuous entropy method (CEM). The three test formats considered are the POLYTYPE format that contains polytomous items with three response …
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Optimal experimental designs for two-variable logistic regression models
… Optimal designs are developed addressing D optimality, Q optimality, and the estimation of interaction between the design variables. The two-variable models with and without interaction usually have to be handled separately. The equivalence theory concerning D optimal designs is studied. The …
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The performance of orthogonal arrays with adjoined or unavailable runs
… designs that are optimal according to a range of optimality criteria. This makes it tempting to construct fractional factorial designs by adjoining additional runs to an OA, or by removing runs from an OA, when the number of runs available for the experiment is only slightly larger or smaller than …
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Optimality criteria applied to certain response surface designs
… primary goal. A design criterion, D<sub>S</sub>-optimality, was applied to several classes of RSM designs to find optimal choices of design parameters. Further, previous results on D-optimal RSM designs were extended. The designs resulting from the use of the two criteria were compared. Two other …
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DESIGNS FOR TESTING LACK OF FIT FOR A CLASS OF SIGMOID CURVE MODELS
… with two, three, or four parameters. We use D-optimality as our design criterion. We first consider adding one extra point to the design, and consider five alternative designs and discuss their suitability to test for lack of fit. Then we extend the results to include one more additional point …
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New design comparison criteria in Taguchi's robust parameter design
… New criteria are developed based on classical optimality criteria for judging various designs with respect to their performance in RPD. Many different designs are studied and compared. Several first-order and many second order designs such as the central-composite designs, Box-Behnken designs, …
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Optimality and Construction of Designs with Generalized Group Divisible Structure
<p>This thesis is an investigation of the optimality and construction problems attendant to the assignment of v treatments to experimental units in b blocks of size k, paying special attention to settings for which equal replication of the treatments is not possible. The model is that of one way …
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D-optymalne chemiczne układy wagowe przy różnych postaciach macierzy kowariancji błędów losowych
W pracy zaprezentowano wyniki dotyczące D-optymalnych chemicznych układów wagowych przy trzech postaciach macierzy kowariancji błędów losowych, które w ogólności są różne od macierzy jednostkowej. W przypadku diagonalnej macierzy kowariancji błędów udowodniono górne oszacowanie wyznacznika macierzy …