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poems  

Pattern-Oriented Ensemble Modeling System
View on CRAN: Click here


Download and install poems package within the R console
Install from CRAN:
install.packages("poems")

Install from Github:
library("remotes")
install_github("cran/poems")

Install by package version:
library("remotes")
install_version("poems", "1.4.0")



Attach the package and use:
library("poems")
Maintained by
July Pilowsky
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2021-03-29
Latest Update: 2025-05-07
Description:
A framework of interoperable R6 classes (Chang, 2020, ) for building ensembles of viable models via the pattern-oriented modeling (POM) approach (Grimm et al., 2005, ). The package includes classes for encapsulating and generating model parameters, and managing the POM workflow. The workflow includes: model setup; generating model parameters via Latin hyper-cube sampling (Iman & Conover, 1980, ); running multiple sampled model simulations; collating summary results; and validating and selecting an ensemble of models that best match known patterns. By default, model validation and selection utilizes an approximate Bayesian computation (ABC) approach (Beaumont et al., 2002, ), although alternative user-defined functionality could be employed. The package includes a spatially explicit demographic population model simulation engine, which incorporates default functionality for density dependence, correlated environmental stochasticity, stage-based transitions, and distance-based dispersal. The user may customize the simulator by defining functionality for translocations, harvesting, mortality, and other processes, as well as defining the sequence order for the simulator processes. The framework could also be adapted for use with other model simulators by utilizing its extendable (inheritable) base classes.
How to cite:
July Pilowsky (2021). poems: Pattern-Oriented Ensemble Modeling System. R package version 1.4.0, https://cran.r-project.org/web/packages/poems. Accessed 06 Mar. 2026.
Previous versions and publish date:
1.0.1 (2021-03-29 17:50), 1.0.2 (2022-01-17 09:32), 1.0.4 (2022-09-30 12:10), 1.1.0 (2023-10-07 08:20), 1.3.1 (2024-09-19 22:40), 1.3.2 (2025-02-24 21:20), 1.3.3 (2025-05-07 21:20)
Other packages that cited poems R package
View poems citation profile
Other R packages that poems depends, imports, suggests or enhances
Complete documentation for poems
Functions, R codes and Examples using the poems R package
Some associated functions: DispersalFriction . DispersalGenerator . DispersalTemplate . GenerativeTemplate . Generator . GenericClass . GenericManager . GenericModel . LatinHypercubeSampler . ModelSimulator . PopulationModel . PopulationResults . Region . ResultsManager . SimulationManager . SimulationModel . SimulationResults . SimulatorReference . SpatialCorrelation . SpatialModel . Validator . poems . population_density . population_dispersal . population_env_stoch . population_results . population_simulator . population_transformation . population_transitions . tasmania_ibra_data . tasmania_ibra_raster . tasmania_raster . thylacine_bounty_record . thylacine_example_matrices . thylacine_example_matrices_rerun . thylacine_example_metrics . thylacine_example_metrics_rerun . thylacine_hs_raster . 
Some associated R codes: DispersalFriction.R . DispersalGenerator.R . DispersalTemplate.R . GenerativeTemplate.R . Generator.R . GenericClass.R . GenericManager.R . GenericModel.R . LatinHypercubeSampler.R . ModelSimulator.R . PopulationModel.R . PopulationResults.R . Region.R . ResultsManager.R . SimulationManager.R . SimulationModel.R . SimulationResults.R . SimulatorReference.R . SpatialCorrelation.R . SpatialModel.R . Validator.R . data.R . poems.R . population_density.R . population_dispersal.R . population_env_stoch.R . population_results.R . population_simulator.R . population_transformation.R . population_transitions.R .  Full poems package functions and examples
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