Pack: Parametric Bootstrap or Resample a projection matrix pack
Title: Parametric Bootstrap or Resample a projection matrix pack
Description
This pack contains a workflow, a file and documentation (tutorial to run the workflow). The Parametric Bootstrap or Resample a projection matrix Workflow provides an environment to resample a projection matrix using a multinomial distribution for transitions and a log normal distribution for fertilities (Stubben, Milligan, and Nantel. 2011). The resample is based on number of plants surveyed. The projection matrix A is first split into separate transition and fertility matrices. Dead fates are added to the transition matrix and the columns are then sampled from a Multinomial distribution based on the size in each corresponding stage class in n. The fertility rates are sample from a Log Normal distribution using the lnorms function. The same variance is applied to all rates by default. (Stubben, Milligan and Nantel 2013, Caswell 2001 see section 12.1.5.2).
The goal of a demographic analysis is very often to estimate lambda, because lambda is estimated from imperfect data, such estimation are uncertain. Therefore, when the results have policy implications it is important to quantify that uncertainty. Confidence interval is one of the traditional tools to doing so (see outputs: Confidence interval of Lambda).
Analyses:
 Lambda (λ)
 Mean matrix
 Variance matrix
 Histogram
 Confidence interval of Lambda
 X= List of resampled matrices.
Items (3)

File: Matrix Terschelling 8788 (Maria Paula BalcazarVargas)
Added by Maria Paula BalcazarVargas ... more than 1 year ago (20140709 14:19:36)

File: Parametric Bootstrap or Resample a projection matrix documentation (Maria Paula BalcazarVargas)
Added by Maria Paula BalcazarVargas ... more than 1 year ago (20140725 09:41:32)

Workflow: Parametric Bootstrap or Resample a projection matrix Workflow (Maria Paula BalcazarVargas)
Added by Maria Paula BalcazarVargas ... more than 1 year ago (20140709 14:17:19)
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Tags from Items (21)
 analysis
 
 biovel
 
 confidence interval of lambda
 
 demography
 
 gentiana pneumonanthe
 
 gerard oostermeijer
 
 growth rates (lambda)
 
 histogram
 
 lambda or dominant eigenvalue
 
 life table response experiments
 
 life table response experiments (ltre)
 
 matrix
 
 matrix population models
 
 mean matrix
 
 model
 
 package ‘popbio’ in r
 
 population
 
 population projection
 
 projection
 
 retrospective analysis.
 
 stage matrix
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