نتایج جستجو برای: bic criteria
تعداد نتایج: 259823 فیلتر نتایج به سال:
In this paper I present a Minimum Description Length Estimator for number of sources in an anechoic mixture of sparse signals. The criterion is roughly equal to the sum of negative normalized maximum log-likelihood and the logarithm of number of sources. Numerical evidence supports this approach and compares favorabily to both the Akaike (AIC) and Bayesian (BIC) Information Criteria. 1 Signal a...
We have developed a new model selection criteria, the partial intrinsic Bayes factor, which is designed for cases when we select a model among a small number of candidate models. For example, we can choose only a few candidate models after exploring scatter plots. Based on this motivation, the partial intrinsic Bayes factor is developed. By simulation study, we showed that PIBF performs better ...
This paper presents the R package gRapHD for efficient selection of highdimensional undirected graphical models. The package provides tools for selecting trees, forests and decomposable models minimizing information criteria such as AIC or BIC, and for displaying the independence graphs of the models. It has also some useful tools for analysing graphical structures. It supports the use of discr...
Population heterogeneity in growth trajectories can be detected with growth mixture modeling (GMM). It is common that researchers compute composite scores of repeated measures and use them as multiple indicators of growth factors (baseline performance and growth) assuming measurement invariance between latent classes. Considering that the assumption of measurement invariance does not always hol...
Bayesian networks are among most popular model classes for discrete vector-valued i.i.d data. Currently the most popular model selection criterion for Bayesian networks follows Bayesian paradigm. However, this method has recently been reported to be very sensitive to the choice of prior hyper-parameters [1]. On the other hand, the general model selection criteria, AIC [2] and BIC [3], are deriv...
The known dimensions of hydrothermal fluid circulation associated with emplacement of the 2.055-Ga Bushveld Igneous Complex (BIC) are extended with new isotopic ages for Paleoproterozoic mineral deposits in wallrocks (Transvaal Supergroup) surrounding the BIC. A fluorite-rich Mississippi Valley–type (MVT) deposit in the Zeerust district, dated at 2.05 Ga (Sm-Nd isochron age), has Nd isotopic co...
A stochastic search method, the so-called Adaptive Subspace (AdaSub) is proposed for variable selection in high-dimensional linear regression models. The method aims at finding best model with respect to a certain criterion and based on idea of adaptively solving low-dimensional sub-problems order provide solution original problem. Any usual $\ell _{0}$-type criteria can be used, such as Akaike...
In our previous work[18], it was proved that the performance of bic-tcp was good under satellite network, and a new adaptive window increment based bic-tcp algorithm (bic_AWI) was proposed to show an improved data transfer in satellite network. We, implemented the idea on ns2’s implementation of bic tcp. Proposed modifications has been made on bic-tcp, and improvement in performance has been re...
Body image concerns: levels, correlates and gender differences among students in the United Kingdom.
AIMS This cross-sectional study aimed to determine the socio-demographic, lifestyle and well-being variables that are associated with body image concerns (BIC) and whether these associations differed between female and male students. METHODS A cross-sectional survey; 3,706 undergraduate students (2,699 females, 765 males) from seven universities in the UK completed a self-administered questio...
To be therapeutically active, oral hyperimmune bovine immunoglobulin concentrate (BIC) must survive its passage through the intestinal tract. This led us to study the gastrointestinal stability of orally administered BIC directed against Clostridium difficile toxins (BIC-C. difficile). BIC-C. difficile was stable at neutral pH in vitro but was degraded at low pH, particularly in the presence of...
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