bayes theorem

..We demonstrate the method on allozyme data from two species of hybridizing trout, as well as on two simulated data sets...

..The main results were that patients with a 211K mutation in the RT region of the viral genome were more likely to have a 215Y mutation and less likely to have a 70R mutation compared to patients without a 211K mutation...

..These inferences were consistent with predictions derived from experimental microdialysis measures of extracellular glutamate levels...

..However, the complexity of biological problems related to genetic structure analysis keeps increasing such that in many cases the current methods may provide either inappropriate or insufficient solutions...

..g. comparing different source reconstruction methods for EEG/MEG or selecting among competing computational models of learning and decision-making...

..g. morphological, nucleotide, and protein-and to explore a wide variety of structured models mixing partition-unique and shared parameters. The program employs MPI to parallelize Metropolis coupling on Macintosh or UNIX clusters...

..A large number of popular stochastic models of sequence evolution are provided and tree-based models suitable for both within- and between-species sequence data are implemented...

..AVAILABILITY: MRBAYES, including the source code, documentation, sample data files, and an executable, is available at http://brahms.biology.rochester.edu/software.html...

..As might be expected, the results are sensitive to the type of genetic marker used (AFLP vs. microsatellite), the number of loci scored, the number of populations sampled, and the number of individuals typed in each sample...

..The methods are implemented in a program, structure, version 2.0, which is available at http://pritch.bsd.uchicago.edu...

..It was concluded that selection on genetic values predicted from markers could substantially increase the rate of genetic gain in animals and plants, especially if combined with reproductive techniques to shorten the generation interval...

..From these we conclude that our method is phylogenetically more accurate and precise than the traditional unrooted model while adding the ability to infer a timescale to evolution...

....

..psychophysiologic interactions). However, unlike previous approaches in neuroimaging, the causal model ascribes responses to designed deterministic inputs, as opposed to treating inputs as unknown and stochastic...

..We demonstrate that both BEST and our method have much better estimation accuracy for species tree topology than concatenation, and our method outperforms BEST in divergence time and population size estimation...

....

..Furthermore, variations in this ACC signal across the population predict variations in subject learning rates. Our results provide a formal account of how we weigh our different experiences in guiding our future actions...

....

..From these analyses, we conclude that our phylogeographic framework will make an important asset in molecular epidemiology that can be easily generalized to infer biogeogeography from genetic data for many organisms...

..Moreover, the model suggests a class of attentional cueing tasks that involve both neuromodulators and shows how their interactions may be part-antagonistic, part-synergistic...

..This study helps tease apart the complex evolutionary history of Africans and African Americans, aiding both anthropological and genetic epidemiologic studies...

..Bayes empirical Bayes identification of amino acid sites under positive selection along the foreground branches was found to be reliable, but lacked power...

....

....

..The results suggest that in small data sets the new BEB method does not generate false positives as did the old NEB approach, while in large data sets it retains the good power of the NEB approach for inferring positively selected sites...

..The central nervous system therefore employs probabilistic models during sensorimotor learning...

..We discuss model critique and model selection, illustrating the role of Bayesian deviance analysis, and node-based model criticism. The assumptions underlying the MTC models and their parameterization are also discussed...

..We illustrate our methods using two example data sets and show that our methods are justifiable, easy to apply, and useful in practice. Software for our method is freely available at: http://biosun1.harvard.edu/complab/batch/...

..Thus, Bayes factors appear to be useful for selecting among complex models, but it is still unclear whether their use strikes a reasonable balance between model complexity and error in parameter estimates...

..AVAILABILITY: The program is available as source under the GNU General Public License and as a web application at http://ceb.scs.fsu.edu/awty...

..The combined use of Bayes factors and DCM thus allows one to evaluate competing scientific theories about the architecture of large-scale neural networks and the neuronal interactions that mediate perception and cognition...

..The algorithm has been implemented using two popular parallel programming models: message passing and shared memory. Performance results indicate nearly linear speed improvement in both programming models for small and large data sets...

..To illustrate some of these points, we have applied AIC-based model averaging to 37 mitochondrial DNA sequences from the subgenus Ohomopterus(genus Carabus) ground beetles described by Sota and Vogler (2001)...

..We illustrate the methods with data on ribonuclease evolution in the Artiodactyla. Software implementing the methods (BayesMultiState) is available from the authors...

..The new algorithm is included in the software package PHASE, version 2.0, available online (http://www.stat.washington.edu/stephens/software.html)...

..We illustrate the methods using Dynamic Causal Models of brain imaging data...

..We demonstrate the method on a set of 106 genes from 8 yeast species...

..We conclude with some general comments on Bayesian approaches to image analysis and on some unresolved issues...

..These results provide a statistically well-supported phylogenetic framework for the largest animal phylum and represent a step towards ending the often-heated, century-long debate on arthropod relationships...

..By providing good practice recommendations for DCM, in the form of ten simple rules, we hope that this article serves as a helpful tutorial for the growing community of DCM users...

..Finally, we also consider, briefly, dynamic models and how these inform the regularisation of free energy ascent schemes, like EM and ReML...

..This could have consequences for the reemergence of drug resistance after pneumococcal vaccination and also for our understanding of diversification and speciation in recombinogenic bacteria...

..In general, the correlation between the phylogenetic accuracy and the posterior probability values obtained from BEST is high, although posterior probabilities are overestimated when the prior distribution for is misspecified...

....

..If these costs are to be mitigated, a greater understanding of the causes, progression and consequences of biological invasions is needed...

....

..We conclude that the relative accuracy of GBLUP and BayesB for a given number of records and heritability are highly dependent on M(e,) which is a property of the target genome, as well as the architecture of the trait (N(QTL))...

..Neurophysiological data on the hypothesis, however, is almost non-existent. A major challenge for neuroscientists is to test these ideas experimentally, and so determine whether and how neurons code information about sensory uncertainty...

..Recent work in Bayesian theories of visual perception has shown how complexity may be managed and ambiguity resolved through the task-dependent, probabilistic integration of prior object knowledge with image features...

..This means the approach automatically selects either a sparse or a distributed model, depending on the data. The scheme is compared with conventional applications of Bayesian solutions to quantify the improvement in performance...

..We demonstrate the use of Bayesian methods for fine mapping in candidate regions, discuss meta-analyses and provide guidance for refereeing manuscripts that contain Bayesian analyses...

..It is available as portable source code and executables for all three major platforms. AVAILABILITY: LAMARC 2.0 is freely available at http://evolution.gs.washington.edu/lamarc..

..We examine these strategies using recent examples from computer vision, and outline some important implications for cognitive science...

..We also present a historical overview of the BUGS project and some future perspectives...

..AVAILABILITY: The software DIY ABC is freely available at http://www.montpellier.inra.fr/CBGP/diyabc...

..Future improvements of our model and algorithm should include consideration of other factors that can cause discordance of gene trees and species trees, such as horizontal transfer or gene duplication...

..While such R(2) values vastly exceed what has been previously reported using a reduced number of pre-selected markers (<0.10), given the heritability of the trait (∼ 0.80), substantial room for improvement remains...

..However, the external route via which subtype C viruses spread to the South American continent has remained unclear...

..This finding substantially advances our understanding of striatal function and provides direct empirical evidence for formal learning theories that posit a central role for prediction error-dependent plasticity...

..The technique of simulated annealing is adopted along with Metropolis coupling as performed in MrBayes to improve the convergence rate of the Markov Chain Monte Carlo algorithm. AVAILABILITY: http://www.stat.osu.edu/~dkp/BEST...

..Key to much of this work is the use of mixing models to estimate the proportion of sources contributing to a mixture such as in diet estimation...

....

..The results imply that paleogeographic and paleoceanographic changes, such as closure of major seaways, have influenced the dynamics of radiation in extant cetaceans...

..Here we present the Extended Bayesian Skyline Plot, a non-parametric Bayesian Markov chain Monte Carlo algorithm that extends a previous coalescent-based method in several ways, including the ability to analyze multiple loci...

..Methods that can solve potential shortcomings of some of these Bayesian regression procedures are discussed briefly...

..We will look at the models entailed by the brain and how minimisation of its free energy can explain its dynamics and structure...

....

..Chromatin immunoprecipitation, followed by sequencing of the resulting samples, produces large amounts of data that can be used to map genomic features such as transcription factor binding sites and histone modifications...

..ABC can be a powerful tool to make inferences with complex models if these principles are carefully applied...

..Subsequently, we discuss ways in which model-based phylogeography can interface with various subfields to become one of the most integrative fields in all of ecology and evolutionary biology...

....

..Next, we estimate the demographic histories of human influenza A hemagglutinin sequences, serially sampled throughout 3 flu seasons...

....

..g., simulations) not possible by Bayesian methods. Our simulation results demonstrate that inclusion of ancestral populations or their surrogates in the analysis is required by any method of IA estimation to obtain reasonable results...

..We conclude that the greatly increased accuracy of the SS and TI methods argues for their use instead of the HM method, despite the extra computation needed...

..We show how FunCoup can be used for discovering candidate members of the Parkinson and Alzheimer pathways. Cross-species pathway conservation analysis provided further support to these observations...

..The LL-innovation estimation method has been already applied to small and medium scale models. With improved Bayesian computations the practical estimation of very large scale EEG/fMRI models shall soon be possible...

..We then apply our model to EEG data from a face-perception experiment, to ask whether there is evidence for non-linear coupling between early visual cortex and fusiform areas...

..However, E-BAYES appears to outperform all other methods in terms of minimizing the mean-squared error (MSE) with relatively short computing time. Application of the new method to real data was demonstrated using a barley dataset...

..These results have practical implications for MEG source reconstruction, particularly in the context of group studies...

....

....

..Collectively, these findings reveal complementary prefrontal computations essential for promoting short- and long-term behavioral flexibility...

..The advantages of incorporating the dependence due to linkage in the classification models are illustrated by analyses of both simulated data and real samples of Bacillus cereus...

..However, the speed and time frame of the model also suggest that the migration of A. thaliana into Europe may have accompanied the spread of agriculture during the Neolithic transition...

..Markov chain Monte Carlo (MCMC) algorithms are developed to simulate the parameters from the posteriors. The methods are illustrated using well-known barley data...

....

..The close relationship between green plants and Chromalveolata is further supported by the common replacement in two plastid-targeted genes...

..Finally, we illustrate how our approach can be used to quantify subjective beliefs and preferences that underlie inter-individual differences in behaviour...

....

..To illustrate the problem, we apply these tests to long-term data on the Soay sheep (Ovis aries) and the great tit (Parus major) and show that previously reported temporal trends in breeding values are not supported...

..Results demonstrate the utility of DBN in inferring the effective connectivity in cortical networks...

..This result emphasizes the importance of top-down projections in recurrent processing that involve high-order associative cortices for conscious perception...

..Adverse event reports (AERs) submitted to the US Food and Drug Administration (FDA) were reviewed to confirm the platinum agent-associated mild, severe, and lethal hypersensitivity reactions...

..Both estimators are robust to modest rate variation; however, their use should be coupled with a statistical test to rule out extreme rate variation as the resulting CIs may not be reliable...

..Of great relevance, however, is the problem of identifying the presence of previously unknown targets or of targets that evolve rapidly...

..Application of this methodology to yeast chromosomal arrays demonstrate substantial improvement over currently existing methods in terms of sensitivity as well as biological interpretability...

....

..We develop the notion of the mean population partition, which is the partition of individuals to populations that minimizes the squared partition distance to the partitions sampled by the MCMC algorithm...

..We improve the performance of Rec-I-DCM3 via parallelisation. The experiments demonstrate that our parallel method, PRec-I-DCM3, achieves significant improvements, both in speed and accuracy, over its sequential counterpart...

..Amphisbaenians are the sister group of lacertids, and dibamid lizards diverged early in squamate evolutionary history. Snakes are grouped with iguanians, lacertiforms, and anguimorphs, but are not nested within anguimorphs...

..This work will contribute toward improved diagnostics and therapies for schizophrenia, a disease that affects millions of people. ..

..The information obtained will be used to design more effective diet, exercise or drug therapy that will prevent the illnesses associated with obesity. ..

..The information obtained will be used to design more effective diet, exercise or drug therapy that will prevent the illnesses associated with obesity. ..

..This bioinformatic approach has the potential for integrating clinical and serologic diagnostic approaches using a standardized serum bank. ..

..These methods will be compared with simulated data, representing different population structures, histories and genetic marker types, and with real data. ..

....

..Understanding patient methods can help health care providers to identify ways improve heart failure status and reduce untimely, repeated heart failure hospitalizations. ..

..Pancreas from such individuals would allow histologic analysis, studies of disease pathogenesis (e.g. TCR usage and virology), and we believe most importantly T cell cloning from diseased islets. ..

..Our data will be deposited in PharmacoGKB, GenBank, and dbSNP. Additionally, our clinical responses data and DNA samples will be deposited in the UCLA DNA Bank that is accessible to other investigators. ..

..Finally, new methods for predicting RNA secondary structure will be developed. The method will combine information from comparative sequence analysis and the Gibb's free energy. ..

....

....

..Finally, new methods for predicting RNA secondary structure will be developed. The method will combine information from comparative sequence analysis and the Gibb's free energy. ..

..Finally, new methods for modeling genomic changes, such as gene duplications, deletions, inversions, and lateral gene transfer, will be developed. ..

..The results of the proposed work will expedite discoveries in basic science, early disease detection, and drug discovery and development. ..

..This will result in fewer health care problems following transplantation. ..

..This will result in fewer health care problems following transplantation. ..

..Finally, we will develop a computer program for Bayesian linear and non-linear system analysis, which allows investigators to use the (model independent representations and MCMC-based methods we will investigate. ..

..The work can also improve the efficient use of data currently collected by developing new ways of combining data from multiple surveys. ..

..The work can also improve the efficient use of data currently collected by developing new ways of combining data from multiple surveys. ..

..Encourage discussions among researchers in diverse areas to foster cross-fertilization of ideas. Facilitate small-group discussions among senior and junior researchers. Disseminate results of the conference as widely as possible. ..

..Such pathways, once identified, will be attractive new targets for antiviral therapy. ..

..Such pathways, once identified, will be attractive new targets for antiviral therapy. ..

..It is anticipated that the results produced will provide the preliminary data needed to continue definitive investigations under the auspices of subsequent R01 funding. ..

..3) A conservative approach to Markov chain Monte Carlo, using it primarily in contexts where it is possible to find lower bounds on its rate of convergence. ..

..The capabilities of this approach will be evaluated with simulated data, empirical MEG data from a head phantom, and empirical fMRI and MEG data from evoked response experiments. ..