Results 31 to 40 of about 1,530,540 (307)

A Bayesian model for gene family evolution

BMC Bioinformatics, 2011
Background A birth and death process is frequently used for modeling the size of a gene family that may vary along the branches of a phylogenetic tree. Under the birth and death model, maximum likelihood methods have been developed to estimate the birth ...
Liu Liang, Yu Lili, Kalavacharla Venugopal, Liu Zhanji   +3 more
doaj   +1 more source

Tree Exploration for Bayesian RL Exploration [PDF]

2008 International Conference on Computational Intelligence for Modelling Control & Automation, 2008
Research in reinforcement learning has produced algorithms for optimal decision making under uncertainty that fall within two main types. The first employs a Bayesian framework, where optimality improves with increased computational time. This is because the resulting planning task takes the form of a dynamic programming problem on a belief tree with ...
openaire   +6 more sources

The enigmatic monotypic crab plover Dromas ardeola is closely related to pratincoles and coursers (Aves, Charadriiformes, Glareolidae)

Genetics and Molecular Biology, 2010
The phylogenetic placement of the monotypic crab plover Dromas ardeola (Aves, Charadriiformes) remains controversial. Phylogenetic analysis of anatomical and behavioral traits using phenetic and cladistic methods of tree inference have resulted in ...
Sergio L. Pereira, Allan J. Baker
doaj   +1 more source

Software Defect Prediction with Bayesian Approaches

Mathematics, 2023
Software defect prediction is an important area in software engineering because it helps developers identify and fix problems before they become costly and hard-to-fix bugs.
María José Hernández-Molinos, Angel J. Sánchez-García, Rocío Erandi Barrientos-Martínez, Juan Carlos Pérez-Arriaga, Jorge Octavio Ocharán-Hernández   +4 more
doaj   +1 more source

Bayesian learning of a tree substitution grammar [PDF]

Proceedings of the ACL-IJCNLP 2009 Conference Short Papers on - ACL-IJCNLP '09, 2009
Tree substitution grammars (TSGs) offer many advantages over context-free grammars (CFGs), but are hard to learn. Past approaches have resorted to heuristics. In this paper, we learn a TSG using Gibbs sampling with a nonparametric prior to control subtree size.
Matt Post, Daniel Gildea
openaire   +2 more sources

Bayesian classification and regression trees for predicting incidence of cryptosporidiosis. [PDF]

PLoS ONE, 2011
BackgroundClassification and regression tree (CART) models are tree-based exploratory data analysis methods which have been shown to be very useful in identifying and estimating complex hierarchical relationships in ecological and medical contexts.
Wenbiao Hu, Rebecca A O'Leary, Kerrie Mengersen, Samantha Low Choy   +3 more
doaj   +1 more source

Analyses and algorithms of personnel safety in mines using event tree and Bayesian network method [PDF]

E3S Web of Conferences
Determination of the hazard index in ensuring the safety of personnel in underground mines requires a comprehensive approach. Different methods can be applied depending on the specifics and conditions of work.
Kalandarov Ilyos, Namozov Nodirbek, Bozorov Bakhriddin   +2 more
doaj   +1 more source

Implicit inequality constraints in a binary tree model [PDF]

, 2011
In this paper we investigate the geometry of a discrete Bayesian network whose graph is a tree all of whose variables are binary and the only observed variables are those labeling its leaves.
Zwiernik, Piotr, Piotr Zwiernik, Jim Q. Smith, Smith, J. Q.   +3 more
core   +1 more source

Effects of visualizing statistical information – An empirical study on tree diagrams and 2 x 2 tables

Frontiers in Psychology, 2015
In their research articles, scholars often use 2 x 2 tables or tree diagrams including natural frequencies in order to illustrate Bayesian reasoning situations to their peers. Interestingly, the effect of these visualizations on participants’ performance
Karin eBinder, Stefan eKrauss, Georg eBruckmaier   +2 more
doaj   +1 more source

A Bayesian network model to disentangle the effects of stand and climate factors on tree mortality of Chinese fir plantations

Frontiers in Forests and Global Change, 2023
Tree mortality is a complex process that not only be affected by the various factors, such as stand and climate factors, but also the various long-term effects of the factors to each other.
Yihang Jiang, Yihang Jiang, Zhen Wang, Hanyue Chen, Yuxin Hu, Yancheng Qu, Sophan Chhin, Jianguo Zhang, Xiongqing Zhang, Xiongqing Zhang   +9 more
doaj   +1 more source