Results 1 to 10 of about 25 (25)

Designing experiments informed by observational studies

open access: yesJournal of Causal Inference, 2021
The increasing availability of passively observed data has yielded a growing interest in “data fusion” methods, which involve merging data from observational and experimental sources to draw causal conclusions.
Rosenman Evan T. R., Owen Art B.
doaj   +1 more source

Laplace-Stieltjes transform of the system mean lifetime via geometric process model

open access: yesOpen Mathematics, 2016
Operation principle of the engineering systems occupies an important role in the reliability theory. In most of the studies, the reliability function of the system is obtained analytically according to the structure of the system.
Gökdere Gökhan, Gürcan Mehmet
doaj   +1 more source

Elección de la constante de ponderación en diseños óptimos compuestos: Diseños CD-óptimos

open access: yesIngeniería y Ciencia, 2013
Se proponen dos metodologías alternativas para la elección de la constante de ponderación en diseños cD-óptimos. Las metodologías están basadas en el cálculo de la potencia de las pruebas de hipótesis asociadas tanto a la significancia de los parámetros ...
César Flórez-Restrepo   +1 more
doaj   +1 more source

On the block structure of PBIB designs

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 3, Issue 1, Page 169-175, 1980., 1979
Let denote the set having any treatment θ and its n1 first associates in a PBIB design with m(≥2) associate classes. A theorem on distribution of the elements of this set among the blocks of the block design is proved and results related to certain well known association schemes of three associate classes are obtained.
M. L. Chandak
wiley   +1 more source

Metodología para incrementar el número de puntos experimentales en un diseño D-Óptimo

open access: yesIngeniería y Ciencia, 2014
La finalidad de los diseños óptimos es determinar las condiciones experimentales adecuadas de tal forma que se pueda garantizar inferencias estadísticas lo más precisas posibles en términos de mínima varianza.
Sindi Argumedo Galván   +1 more
doaj   +1 more source

Markov modeling on dynamic state space for genetic disorders and infectious diseases with mutations: Probabilistic framework, parameter estimation, and applications

open access: yesComputational and Mathematical Biophysics
The emergence and dynamic prevalence of genetic disorders and infectious diseases with mutations pose significant challenges for public health interventions.
Baranon Mouhamadou Djima   +3 more
doaj   +1 more source

Double machine learning and design in batch adaptive experiments

open access: yesJournal of Causal Inference
We consider an experiment with at least two stages or batches and O(N)O\left(N) subjects per batch. First, we propose a semiparametric treatment effect estimator that efficiently pools information across the batches, and we show that it asymptotically ...
Li Harrison H., Owen Art B.
doaj   +1 more source

Optimal allocation of sample size for randomization-based inference from 2K factorial designs

open access: yesJournal of Causal Inference
Optimizing the allocation of units into treatment groups can help researchers improve the precision of causal estimators and decrease costs when running factorial experiments.
Ravichandran Arun   +3 more
doaj   +1 more source

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