Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 7

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Sampling methods for the concentration parameter and discrete baseline of the Dirichlet Process

100%

Liu Y. , Nandram B.

tom 23

nr 4

21-36

There are many models in the current statistical literature for making inferences based on samples selected from a finite population. Parametric models may be problematic because statistical inference is sensitive to parametric assumptions. The Dirichlet process (DP) prior is very flexible and determines the complexity of the model. It is indexed by two hyperparameters: the baseline distribution and concentration parameter. We address two distinct problems in the article. Firstly, we review the current sampling methods for the concentration parameter, which use the continuous baseline distribution. We compare three different methods: the adaptive rejection method, the mixture of Gammas method and the grid method. We also propose a new method based on the ratio of uniforms. Secondly, in practice, some survey responses are known to be discrete. If a continuous distribution is adopted as the baseline distribution, the model is misspecified and standard inference may be invalid. We propose a discrete baseline approach to the DP prior and sample the unobserved responses from the finite population both using a Polya urn scheme and a Multinomial distribution. We applied our discrete baseline approach to a Phytophthora data set.

Implementing Sustainable Competitive Advantage to the Public Sector’s Management System – By Sense and Respond Methodology in Facilities Services Unit’s Preparedness

85%

Vornanen V.-J. , Takala J. , Liu Y. , Vornanen V.-J. , Takala J. , Liu Y.

2013

nr 3

Blow-up of a nonlocal p-Laplacian evolution equation with critical initial energy

80%

Liu Y. , Lv P. , Da C.

tom 117

nr 1

89-99

This paper is concerned with the initial boundary value problem for a nonlocal p-Laplacian evolution equation with critical initial energy. In the framework of the energy method, we construct an unstable set and establish its invariance. Finally, the finite time blow-up of solutions is derived by a combination of the unstable set and the concavity method.

Transformational Leadership in Operational Competitiveness Improvement: A Case Study in Malaysian Automotive Industry

71%

Wu Q. , Shamsuddin A. , Tasmin R. , Takala J. , Liu Y. , Wu Q. , Shamsuddin A. , Tasmin R. , Takala J. , Liu Y.

nr 1

Validating Knowledge and Technology Effects to Operative Sustainable Competitive Advantage

71%

Takala J. , Koskinen J. , Liu Y. , Tas M. S. , Muhos M. , Takala J. , Koskinen J. , Liu Y. , Tas M. S. , Muhos M.

2013

nr 3

Stability analysis of high-order Hopfield-type neural networks based on a new impulsive differential inequality

71%

Liu Y. , Yang R. , Lu J. , Wu B. , Cai X.

nr 1

201-211

This paper is devoted to studying the globally exponential stability of impulsive high-order Hopfield-type neural networks with time-varying delays. In the process of impulsive effect, nonlinear and delayed factors are simultaneously considered. A new impulsive differential inequality is derived based on the Lyapunov-Razumikhin method and some novel stability criteria are then given. These conditions, ensuring the global exponential stability, are simpler and less conservative than some of the previous results. Finally, two numerical examples are given to illustrate the advantages of the obtained results.

Evaluation And Selection Process of Suppliers Through Analytical Framework: An Emprical Evidence of Evaluation Tool

57%

Imeri S. , Shahzad K. , Takala J. , Liu Y. , Sillanpää I. , Ali T. , Imeri S. , Shahzad K. , Takala J. , Liu Y. , Sillanpää I. , Ali T.

nr 3