gbm.bfcheck

Provides minimum bag fractions for gbm.auto, preventing failure
due to bf &amp; samples rows limit. Simon Dedman, 2016, simondedman@gmail.com,
GitHub.com/SimonDedman/gbm.auto

Automates delta log-normal boosted regression tree abundance
prediction. Loops through parameters provided (LR (learning rate), TC
(tree complexity), BF (bag fraction)), chooses best, simplifies, &
generates line, dot & bar plots, & outputs these & predictions & a
report, makes predicted abundance maps, and Unrepresentativeness
surfaces. Package core built around 'gbm' (gradient boosting machine)
functions in 'dismo' (Hijmans, Phillips, Leathwick & Jane Elith, 2020
& ongoing), itself built around 'gbm' (Greenwell, Boehmke, Cunningham
& Metcalfe, 2020 & ongoing, originally by Ridgeway). Indebted to
Elith/Leathwick/Hastie 2008 'Working Guide'
<doi:10.1111/j.1365-2656.2008.01390.x>; workflow follows Appendix S3.
See <https://www.simondedman.com/> for published guides and papers
using this package.

Simon Dedman

gbm.auto

Automated Boosted Regression Tree Modelling and Mapping Suite

gbm.bfcheck function

<dl><dt>samples</dt>
<dd>Samples dataset, same as gbm.auto.</dd>
<dt>resvar</dt>
<dd>Response variable column in samples.</dd>
<dt>ZI</dt>
<dd>Are samples zero-inflated? TRUE/FALSE/"CHECK".</dd>
<dt>grv</dt>
<dd>Dummy param for package testing for CRAN, ignore.</dd></dl>

Arguments

Simon Dedman, <a href="/link/simondedman%40gmail.com?package=gbm.auto&version=2024.10.01" data-mini-rdoc="gbm.auto::simondedman@gmail.com">simondedman@gmail.com</a>

Author

Calculates minimum Bag Fraction size for gbm.auto — gbm.bfcheck

<dl>

<dt>samples</dt>
<dd>Samples dataset, same as gbm.auto.</dd>


<dt>resvar</dt>
<dd>Response variable column in samples.</dd>


<dt>ZI</dt>
<dd>Are samples zero-inflated? TRUE/FALSE/"CHECK".</dd>


<dt>grv</dt>
<dd>Dummy param for package testing for CRAN, ignore.</dd>

</dl>

Simon Dedman, <a href='mailto:simondedman@gmail.com'>simondedman@gmail.com</a>

gbm.bfcheck: Calculates minimum Bag Fraction size for gbm.auto

Description

Usage

Value

Arguments

Author

Examples