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Relevant bibliographies by topics / Fractional Bayes factor

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Academic literature on the topic 'Fractional Bayes factor'

Author: Grafiati

Published: 9 March 2023

Last updated: 19 July 2025

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Journal articles on the topic "Fractional Bayes factor"

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Conigliani, Caterina, and Anthony O'hagan. "Sensitivity of the fractional Bayes factor to prior distributions." Canadian Journal of Statistics 28, no. 2 (2000): 343–52. http://dx.doi.org/10.2307/3315983.

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De Santis, Fulvio, and Fulvio Spezzaferri. "Consistent fractional Bayes factor for nested normal linear models." Journal of Statistical Planning and Inference 97, no. 2 (2001): 305–21. http://dx.doi.org/10.1016/s0378-3758(00)00240-8.

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Ariza-Hernandez, Francisco J., Jorge Sanchez-Ortiz, Martin P. Arciga-Alejandre, and Luis X. Vivas-Cruz. "Bayesian Analysis for a Fractional Population Growth Model." Journal of Applied Mathematics 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/9654506.

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We implement the Bayesian statistical inversion theory to obtain the solution for an inverse problem of growth data, using a fractional population growth model. We estimate the parameters in the model and we make a comparison between this model and an exponential one, based on an approximation of Bayes factor. A simulation study is carried out to show the performance of the estimators and the Bayes factor. Finally, we present a real data example to illustrate the effectiveness of the method proposed here and the pertinence of using a fractional model.

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Dittrich, Dino, Roger Th A. J. Leenders, and Joris Mulder. "Network Autocorrelation Modeling: A Bayes Factor Approach for Testing (Multiple) Precise and Interval Hypotheses." Sociological Methods & Research 48, no. 3 (2017): 642–76. http://dx.doi.org/10.1177/0049124117729712.

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Currently available (classical) testing procedures for the network autocorrelation can only be used for falsifying a precise null hypothesis of no network effect. Classical methods can be neither used for quantifying evidence for the null nor for testing multiple hypotheses simultaneously. This article presents flexible Bayes factor testing procedures that do not have these limitations. We propose Bayes factors based on an empirical and a uniform prior for the network effect, respectively, first. Next, we develop a fractional Bayes factor where a default prior is automatically constructed. Sim

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de Santis, Fulvio, and Fulvio Spezzaferri. "Methods for Default and Robust Bayesian Model Comparison: The Fractional Bayes Factor Approach." International Statistical Review / Revue Internationale de Statistique 67, no. 3 (1999): 267. http://dx.doi.org/10.2307/1403706.

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Santis, Fulvio, and Fulvio Spezzaferri. "Methods for Default and Robust Bayesian Model Comparison: the Fractional Bayes Factor Approach." International Statistical Review 67, no. 3 (1999): 267–86. http://dx.doi.org/10.1111/j.1751-5823.1999.tb00449.x.

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Mashayekhi, Somayeh, and Peter Beerli. "Fractional coalescent." Proceedings of the National Academy of Sciences 116, no. 13 (2019): 6244–49. http://dx.doi.org/10.1073/pnas.1810239116.

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An approach to the coalescent, the fractional coalescent (f-coalescent), is introduced. The derivation is based on the discrete-time Cannings population model in which the variance of the number of offspring depends on the parameter α. This additional parameter α affects the variability of the patterns of the waiting times; values ofα<1lead to an increase of short time intervals, but occasionally allow for very long time intervals. Whenα=1, the f-coalescent and the Kingman’s n-coalescent are equivalent. The distribution of the time to the most recent common ancestor and the probability that

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Kaiser, Andrew R., Nihan S. Pol, Maura A. McLaughlin, et al. "Disentangling Multiple Stochastic Gravitational Wave Background Sources in PTA Data Sets." Astrophysical Journal 938, no. 2 (2022): 115. http://dx.doi.org/10.3847/1538-4357/ac86cc.

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Abstract With strong evidence of a common-spectrum stochastic process in the most recent data sets from the NANOGrav Collaboration, the European Pulsar Timing Array (PTA), Parkes PTA, and the International PTA, it is crucial to assess the effects of the several astrophysical and cosmological sources that could contribute to the stochastic gravitational wave background (GWB). Using the same data set creation and injection techniques as in Pol et al., we assess the separability of multiple GWBs by creating single and multiple GWB source data sets. We search for these injected sources using Bayes

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O'Hagan, Anthony. "Fractional Bayes Factors for Model Comparison." Journal of the Royal Statistical Society: Series B (Methodological) 57, no. 1 (1995): 99–118. http://dx.doi.org/10.1111/j.2517-6161.1995.tb02017.x.

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O’Hagan, A. "Properties of intrinsic and fractional Bayes factors." Test 6, no. 1 (1997): 101–18. http://dx.doi.org/10.1007/bf02564428.

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Dissertations / Theses on the topic "Fractional Bayes factor"

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Wang, Guojun. "Some Bayesian Methods in the Estimation of Parameters in the Measurement Error Models and Crossover Trial." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1076852153.

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ARTARIA, ANDREA. "Objective Bayesian Analysis for Differential Gaussian Directed Acyclic Graphs." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2014. http://hdl.handle.net/10281/55327.

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Often we are confronted with heterogeneous multivariate data, i.e., data coming from several categories, and the interest may center on the differential structure of stochastic dependence among the variables between the groups. The focus in this work is on the two groups problem and is faced modeling the system through a Gaussian directed acyclic graph (DAG) couple linked in a fashion to obtain a joint estimation in order to exploit, whenever they exist, similarities between the graphs. The model can be viewed as a set of separate regressions and the proposal consists in assigning a non-local

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Garnier, Gérard. "Le facteur B du complément humain : bases structurales et biosynthétiques de sa microhétérogénéité, mises en évidence par les techniques électrophorétiques." Rouen, 1988. http://www.theses.fr/1988ROUES026.

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Palazzoli, Irene. "Identification of the most effective factors responsible for the flushing of a tracer in a system of shallow bays." Thesis, 2017. https://hdl.handle.net/2144/24086.

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The exchange of dissolved constituents between a shallow bay and the ocean is governed by regular tidal fluxes as well as by wind generated storm surges and currents. In this study the transport of a conservative tracer was simulated using the numerical model Delft3D in a system of shallow bays along the coast of the Delmarva Peninsula, Virginia. The evaluation of the tracer residence time was carried out using the Eulerian approach. The main mechanisms governing the decay of the tracer concentration inside the lagoons were assessed by considering the influence of different factors such as the

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Books on the topic "Fractional Bayes factor"

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Reutenauer, Christophe. From Christoffel Words to Markoff Numbers. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198827542.001.0001.

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Christoffel introduced in 1875 a special class of words on a binary alphabet, linked to continued fractions. Some years laterMarkoff published his famous theory, called nowMarkoff theory. It characterizes certain quadratic forms, and certain real numbers by extremal inequalities. Both classes are constructed by using certain natural numbers, calledMarkoff numbers; they are characterized by a certain diophantine equality. More basically, they are constructed using certain words, essentially the Christoffel words. The link between Christoffelwords and the theory ofMarkoffwas noted by Frobenius.M

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Book chapters on the topic "Fractional Bayes factor"

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De Santis, Fulvio, and Fulvio Spezzaferri. "Comparing hierarchical models using Bayes factor and fractional Bayes factor: a robust analysis." In Institute of Mathematical Statistics Lecture Notes - Monograph Series. Institute of Mathematical Statistics, 1996. http://dx.doi.org/10.1214/lnms/1215453075.

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Moreno, Elias. "Bayes factors for intrinsic and fractional priors in nested models. Bayesian robustness." In Institute of Mathematical Statistics Lecture Notes - Monograph Series. Institute of Mathematical Statistics, 1997. http://dx.doi.org/10.1214/lnms/1215454142.

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Habyarimana, Ephrem, and Sofia Michailidou. "Genomic Prediction and Selection in Support of Sorghum Value Chains." In Big Data in Bioeconomy. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71069-9_16.

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AbstractGenomic prediction and selection models (GS) were deployed as part of DataBio project infrastructure and solutions. The work addressed end-user requirements, i.e., the need for cost-effectiveness of the implemented technologies, simplified breeding schemes, and shortening the time to cultivar development by selecting for genetic merit. Our solutions applied genomic modelling in order to sustainably improve productivity and profits. GS models were implemented in sorghum crop for several breeding scenarios. We fitted the best linear unbiased predictions data using Bayesian ridge regression, genomic best linear unbiased predictions, Bayesian least absolute shrinkage and selection operator, and BayesB algorithms. The performance of the models was evaluated using Monte Carlo cross-validation with 70% and 30%, respectively, as training and validation sets. Our results show that genomic models perform comparably with traditional methods under single environments. Under multiple environments, predicting non-field evaluated lines benefits from borrowing information from lines that were evaluated in other environments. Accounting for environmental noise and other factors, also this model gave comparable accuracy with traditional methods, but higher compared to the single environment model. The GS accuracy was comparable in genomic selection index, aboveground dry biomass yield and plant height, while it was lower for the dry mass fraction of the fresh weight. The genomic selection model performances obtained in our pilots are high enough to sustain sorghum breeding for several traits including antioxidants production and allow important genetic gains per unit of time and cost.

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Marinucci, Domenico, and Lea Petrella. "A Bayesian Proposal for the Analysis of Stationary and Nonstationary AR(1) Time Series." In Bayesian Statistics 6. Oxford University PressOxford, 1999. http://dx.doi.org/10.1093/oso/9780198504856.003.0043.

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Abstract Default Bayesian analysis for the AR(1) model is considered and an improper prior is suggested, the choice being motivated by consideration of the functional relationship between the autoregressive parameter ρ and the variance of the process in a time series framework. We discuss the initialization issue under both stationarity and nonstationarity, and we propose a procedure that avoids discontinuities in statistical inference. We present numerical evidence, based on frequentist criteria, on the performance of the suggested prior and of the fractional Bayes factor when comparing stationary versus nonstationary models.

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Garisch, Isabelle, and Pieter C. N. Groenewald. "The Nile Revisited: Changepoint Analysis with Autocorrelation." In Bayesian Statistics 6. Oxford University PressOxford, 1999. http://dx.doi.org/10.1093/oso/9780198504856.003.0035.

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Abstract Bayesian changepoint analyses in the linear model is examined when the errors are correlated. Bayes factors and posterior probabilities are derived for the number of changepoints and positions of changepoints in a sequence of random variables. The principle of partial Bayes factors is applied through the fractional and intrinsic Bayes factors.The methods are applied to the well-known data of annual discharge of the Nile river at Aswan, as well as to an example of a multiphase bacterial growth model. It appears that, while the autocorrelation has little effect on the estimated positions of the changepoints, the presence of changepoints can have a substantial effect on the estimation of the correlation coefficient.

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Chennupati, Janani, Mounika Susarla, Vani K. Suvarna, K. S. Vijaya Lakshmi, and Chennu Nandini Priyanka. "Algorithm-Based Spatio-Temporal Study on Identification of Pure Bamboo Vegetation Using LULC Classification." In Handbook of Research on Advancements in AI and IoT Convergence Technologies. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-6971-2.ch014.

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Bamboo is a natural air purifier that helps to keep the surroundings clean. Bamboo forests, an essential source of socioeconomic life for rural communities and an integral part of the ecosystem, are undergoing substantial changes. In the mapping and identification of natural resources, space technology has been beneficial. The objective of classification is to divide a large subject into fewer, more manageable fractions. For land use and land cover, four supervised learning methods, namely Naive Bayes, random forest, support vector machine, and decision tree, are used. Their overall accuracies will be compared to obtain the best algorithm. Land cover mapping and monitoring were carried out to preserve current natural resources and better understand the causative factors of land use in the study region, i.e., East Garo Hills, a district of Meghalaya, for the 2018 data. The application performance was measured in terms of Accuracy 97.23%, Recall 89.23%, F1 measure 97.23%, and Throughput 96.34%, which were improved and competed with future-level applications.

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Cnossen, Sijbren. "Revenue Performance." In Modernizing VATs in Africa. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198844075.003.0006.

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Chapter 6 examines the revenue performance of African VATs by calculating their collection efficiencies defined as actual VAT revenue as a fraction of potential revenue. The VAT gap consists of the policy gap (exemptions and reduced rates) and the compliance gap (evasion and lack of enforcement). Possible explanatory factors, such as the level of economic development, the VAT structure, and the effectiveness of the VAT administration, are reviewed. The analysis appears to indicate that it is unlikely that African VATs in their current form are up to the task of generating much more revenue. Further, replacement of trade taxes by VATs is not easy if VAT bases are too narrow and enforcement too shallow to put much trust in VAT’s revenue-raising capacity.

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Barberger-Gateau Pascale, Lambert Jean-Charles, Féart Catherine, et al. "From Genetics to Dietetics: The Contribution of Epidemiology to Understanding Alzheimer's Disease." In Advances in Alzheimer’s Disease. IOS Press, 2013. https://doi.org/10.3233/978-1-61499-154-0-457.

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Late-life dementia results from non-modifiable risk factors such as age and genetics, modulated by deleterious and protective environmental factors among which nutrition may play a major role. This paper highlights five major recent contributions of the French Three-City (3C) and PAQUID epidemiological studies to Alzheimer's disease (AD) knowledge, targeting genetic and dietary risk factors, and the impact of cognitive decline in daily living. The 3C study contributed to a large genome-wide association study to identify new genetic risk factors for AD. In addition to apolipoprotein E (APOE), two loci gave replicated evidence of association: one within CLU, encoding clusterin or apolipoprotein J, and the other within CR1, encoding the complement component receptor 1. Although the attributable fraction of risk for these polymorphisms is moderate, genetic studies provide significant insights into the molecular bases of AD. Regarding dietary data, findings from 3C suggest that healthy diets associating sources of both omega 3 fatty acids (fish) and antioxidants (fruits and vegetables) such as the Mediterranean diet, and caffeine could be associated with decreased risk for AD. However, the protective effect of omega3 fatty acids might be limited to APOE4 non-carriers. Future research should focus on gene-nutrient interactions. Regarding the functional impact of prodromal AD, the PAQUID study showed that taking into account mild functional limitations considerably increases the predictive value of neuropsychological tests for conversion to dementia. Research should focus on sensitive instruments to capture early functional decline to improve the identification of elderly patients at high risk of conversion to dementia.

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Pratim Das, Partha. "SYNTHESIS OF CROWN ETHERS WITH ADDITIONAL AZOMETHINE/SCHIFF-BASE FUNCTIONALITY AND THEIR METAL COMPLEXES." In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 3. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3becm3ch2.

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The most investigated macromolecules are crown ethers, which are distinguished by their varied host-guest chemistry. Because of their wide-ranging significance, modifying simple crown ethers is of relevance to scientists everywhere. The confluence of two or more distinct kinds of functionalities in one molecular framework leads to ambidentate chelating complexes. Off late Schiff base appended oxa-crown ether systems and their metal complexes have been extensively studied. Schiff bases and their metal complexes have been studied even before crown ethers were synthesized. Numerous research opportunities are made possible by the fact that it may interact with both Group I/II metal ions i. e. s-block metal ions [Lithium (I), Potassium (I), Sodium (I), Barium (II), etc.] via the crown ether component and transition metals or d-block metal ions of intermediary hardness [Iron (II), Manganese (II), Manganese (III), Cobalt (II), Cobalt (III), Nickel (II), Copper (II), Zinc (II), etc.] via the Schiff base fraction. Such systems have found numerous applications in diverse fields. These modified crown ethers are more sensitive, selective, and capable of binding ions than the initial crown ether. This chapter extensively covers general synthesis processes of mono-, bis-, and multi-crown ether schiff base molecules along with their metal complexes. A handful of these complexes' catalytic properties were emphasised. When compared to the similar schiff base compounds, these complexes exhibit enhanced catalytic activity.

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Del Genio, Anthony D. "GCM Simulations of Cirrus for Climate Studies." In Cirrus. Oxford University Press, 2002. http://dx.doi.org/10.1093/oso/9780195130720.003.0019.

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One of the great challenges in predicting the rate and geographical pattern of climate change is to faithfully represent the feedback effects of various cloud types that arise via different mechanisms in different parts of the atmosphere. Cirrus clouds are a particularly uncertain component of general circulation model (GCM) simulations of long-term climate change for a variety of reasons, as detailed below. First, cirrus encompass a wide range of optical thicknesses and altitudes. At one extreme are the thin tropopause cirrus that barely affect the short-wave albedo while radiating to space at very cold temperatures, producing a net positive effect on the planetary radiation balance and causing local upper troposphere warming, thus stabilizing the lapse rate. At the other extreme are thick cumulus anvil cirrus whose bases descend to the freezing level; these clouds produce significant but opposing short-wave and long-wave effects on the planetary energy balance while cooling the surface via their reflection of sunlight. In fact, satellite climatologies show a continuum of optical thicknesses between these two extremes (Rossow and Schiffer 1991). In a climate change, the net effect of cirrus might either be a positive or a negative feedback, depending on the sign and magnitude of the cloud cover change in each cloud-type category and the direction and extent of changes in their optical properties (see Stephens et al. 1990). Second, the dynamic processes that create cirrus are poorly resolved and different in different parts of the globe. In the tropics, small-scale convective transport of water from the planetary boundary layer to the upper troposphere is the immediate source of a significant fraction of the condensate in mesoscale cirrus anvils (see Gamache and Houze 1983), and ultimately the source of much of the water vapor that condenses out in large-scale uplift to form thinner cirrus. However, many observed thin cirrus cannot directly be identified with a convective source, suggesting that in situ upper troposphere dynamics and regeneration processes within cirrus (see Starr and Cox 1985) are important. In mid-latitudes, although summertime continental convection is a source of cirrus, in general cirrus is associated with mesoscale frontal circulations in synoptic-scale baroclinic waves and jet streaks (see Starr and Wylie 1990; Mace et al. 1995).

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Conference papers on the topic "Fractional Bayes factor"

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Al-Ali, Mohannad H., and K. C. Ho. "Bayesian multi-antenna sensing in cognitive radio networks using Fractional Bayes Factor." In 2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2017. http://dx.doi.org/10.1109/icassp.2017.7952822.

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Botsis, Ch, G. Anagnostides, and N. Kokavesis. "A Comprehensive Review of Ultimate and Allowable Stress Design Methodologies for External Load Calculation of Petrochemical Equipment: Eurocode 8 Versus ASME Codes." In ASME 2003 Pressure Vessels and Piping Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/pvp2003-2108.

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The purpose of this paper is to provide a review of design methodologies for process equipment under pressure subjected to seismic loads. Such equipment includes spherical and cylindrical tanks, pressure vessels including towers and reactors, and fired heaters. For this equipment, the wall thickness of the pressure retaining space is designed so that the hoop stress is a fraction of the yield stress, Sy, of the material of construction. This fraction of the yield stress is called the allowable stress, Sm, and it is used in the allowable stress design codes such as ASME and API. However the mag

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Zha, Kan, Radu-Catalin Florea, and Marcis Jansons. "Comparison of Soot Evolution Using High-Speed CMOS Color Camera and Two-Color Thermometry in an Optical Diesel Engine Fueled With B20 Biodiesel Blend and Ultra-Low Sulfur Diesel." In ASME 2011 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/icef2011-60146.

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Biodiesel is a desirable alternative fuel for the diesel engine due to its low engine-out soot emission tendency. When blended with petroleum-based diesel fuels, soot emissions generally decrease in proportion to the volume fraction of biodiesel in the mixture. While comparisons of engine-out soot measurements between biodiesel blends and petroleum-based diesel have been widely reported, in-cylinder soot evolution has not been experimentally explored to the same extent. To elucidate the soot emission reduction mechanism of biodiesel, a single-cylinder optically-accessible diesel engine was use

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Costa, PA. "FRAÇÃO DE PLAQUETAS IMATURAS (IPF): UMA REVISÃO DA LITERATURA." In Resumos do 54º Congresso Brasileiro de Patologia Clínica/Medicina Laboratorial. Zeppelini Editorial e Comunicação, 2022. http://dx.doi.org/10.5327/1516-3180.140s1.5646.

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Objetivo: O objetivo deste trabalho foi pesquisar a utilidade diagnóstica das PRs, por meio do parâmetro de fração de plaquetas imaturas (IPF) na rotina médica, e suas limitações, além das perspectivas futuras para seu uso. Método: Foi realizada uma pesquisa bibliográfica em bases de dados confiáveis: Medline, US. National Library of Medicine National Institutes of Health, USA (PubMed), Scientific Eletronic Library Online (SciELO Brazil) e Biblioteca Regional de Medicina, Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde (BIREME), utilizando os descritores platelet indices

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Corporan, Edwin, Matthew J. DeWitt, Christopher D. Klingshirn, Shannon M. Mahurin, and Meng-Dawn Cheng. "Emissions Characteristics of a Legacy Military Aircraft." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59255.

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Emissions from aircraft and associated ground equipment are major sources of local pollution at airports and military bases. These pollutant emissions, especially particulate matter (PM), have been receiving significant attention lately due to their proven harmful health and environmental effects. As the U.S. Environmental Protection Agency (EPA) tightens environmental standards, it is likely that military operations, including the basing of advanced and legacy aircraft, will be impacted. Accurate determination of emission indices from aircraft is necessary to properly assess their environment

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Glaude, Pierre A., Rene´ Fournet, Roda Bounaceur, and Michel Moliere. "Gas Turbines and Biodiesel: A Clarification of the Relative NOX Indices of FAME, Gasoil, and Natural Gas." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59623.

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There is currently a sustained interest in biofuels as they represent a potential alternative to petroleum derived fuels. Biofuels are likely to help decrease greenhouse gases emissions and the dependence on oil resources. Biodiesels are Fatty Acid Methyl Esters (FAMEs) that are mainly derived from vegetable oils; their compositions depend from the parent vegetables: rapeseed (“RME”), soybean (“SME”), sunflower, palm etc. A fraction of biodiesel has also an animal origin (“tallow”). A key factor for the use of biofuels in gas turbines is their Emissions Indices (NOx, CO, VOC, PM) in comparison

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