scholarly journals Assessing Parameter Identifiability in Phylogenetic Models Using Data Cloning

2012 ◽  
Vol 61 (6) ◽  
pp. 955-972 ◽  
Author(s):  
José Miguel Ponciano ◽  
J. Gordon Burleigh ◽  
Edward L. Braun ◽  
Mark L. Taper
Ecology ◽  
2009 ◽  
Vol 90 (2) ◽  
pp. 356-362 ◽  
Author(s):  
José Miguel Ponciano ◽  
Mark L. Taper ◽  
Brian Dennis ◽  
Subhash R. Lele

Author(s):  
Odile Maliet ◽  
Hélène Morlon

1AbstractDiversification rates vary across species as a response to various factors, including environmental conditions and species-specific features. Phylogenetic models that allow accounting for and quantifying this heterogeneity in diversification rates have proven particularly useful for understanding clades diversification. Recently, we introduced the cladogenetic diversification rate shift model (ClaDS), which allows inferring subtle rate variations across lineages. Here we present a new inference technique for this model that considerably reduces computation time through the use of data augmentation and provide an implementation of this method in Julia. In addition to drastically reducing computation time, this new inference approach provides a posterior distribution of the augmented data, that is the tree with extinct and unsampled lineages as well as associated diversification rates. In particular, this allows extracting the distribution through time of both the mean rate and the number of lineages. We assess the statistical performances of our approach using simulations and illustrate its application on the entire bird radiation.


Author(s):  
Andrés Benchimol ◽  
Irene Albarrán ◽  
Juan Miguel Marín ◽  
Pablo Alonso-González

2015 ◽  
Vol 89 ◽  
pp. 158-171
Author(s):  
Mahmoud Torabi ◽  
Subhash R. Lele ◽  
Narasimha G.N. Prasad

2000 ◽  
Vol 179 ◽  
pp. 193-196
Author(s):  
V. I. Makarov ◽  
A. G. Tlatov

AbstractA possible scenario of polar magnetic field reversal of the Sun during the Maunder Minimum (1645–1715) is discussed using data of magnetic field reversals of the Sun for 1880–1991 and the14Ccontent variations in the bi-annual rings of the pine-trees in 1600–1730 yrs.


Author(s):  
Brynne D. Ovalle ◽  
Rahul Chakraborty

This article has two purposes: (a) to examine the relationship between intercultural power relations and the widespread practice of accent discrimination and (b) to underscore the ramifications of accent discrimination both for the individual and for global society as a whole. First, authors review social theory regarding language and group identity construction, and then go on to integrate more current studies linking accent bias to sociocultural variables. Authors discuss three examples of intercultural accent discrimination in order to illustrate how this link manifests itself in the broader context of international relations (i.e., how accent discrimination is generated in situations of unequal power) and, using a review of current research, assess the consequences of accent discrimination for the individual. Finally, the article highlights the impact that linguistic discrimination is having on linguistic diversity globally, partially using data from the United Nations Educational, Scientific and Cultural Organization (UNESCO) and partially by offering a potential context for interpreting the emergence of practices that seek to reduce or modify speaker accents.


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