errs: Estimator accuracy and bias

In mikeroswell/MeanRarity: Hill Diversity Estimation and Visualization

Estimator accuracy and bias

Description

A simulated dataset with rmse and mean absolute error for different approaches to estimating the true (asymptotic) Hill diversity based on finite samples from simulated species abundance distributions. Hill diversity was estimated with the naïve estimator, rarity(sample_freq, l), the Chao and Jost 2015 non-parametric asymptotic estimator Chao_Hill_abu(sample_freq, l), and God's estimator GUE(sample_freq, true_freq, l).

Usage

errs

Format

A data.frame with 2376 rows and 8 variables:

• ell: Scalar, scaling parameter for Hill diversity

• distribution Factor, family, one of "lnorm" or "gamma"

• fitted.parameter Factor, shape parameter for fitting SAD

• n: Numeric, individuals sampled

• SAD: Integer, index of SAD sampled

• estimator Character, estimator whose error is described

• rmse Numeric, root mean squared error of estimator

• bias Numeric, mean difference between estimator and true diversity

References

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Chao2015MeanRarity

mikeroswell/MeanRarity documentation built on May 5, 2024, 4:50 p.m.