Summary of LE0 Fits

Summarizes parameter estimates and goodness-of-fit statistics for a fitted LE0 model.

Usage

# S3 method for class 'le0_fit'
summary(object, ...)

Arguments

object

A le0_fit object.

...

Additional arguments passed to methods.

Value

A data frame containing parameter estimates and model diagnostics for each fitted bottle.

Details

The summary typically includes:

• Asymptotic gas production (A)

• Fractional rate constant (k)

• Shape parameter (d)

• Residual Sum of Squares (RSS)

• Root Mean Squared Error (RMSE)

• R-squared (R²)

• Akaike Information Criterion (AIC)

• Bayesian Information Criterion (BIC)

The LE0 (Logistic-Exponential) model combines exponential fermentation kinetics with a logistic component to provide additional flexibility in curve shape without requiring an explicit lag phase.

The shape parameter d controls the curvature of the fermentation profile and can improve fit performance for sigmoidal gas production data.

See also

fit_le0, fit_lel, plot_fit, plot_residuals, compare_models

Examples

files <- example_data()

raw_data <- read_ankom(
  files$ankom
)

metadata <- read_metadata(
  files$metadata
)

gp <- process_ankom(
  raw_data,
  metadata,
  headspace_ml = 210,
  temperature_c = 39
)

fit <- fit_le0(
  gp
)
#> Warning: Large negative pressure values detected. Minimum PSI = -1.274 . Please inspect the affected bottles.
#> rumenGP data validation passed.
#> Observations: 1752
#> Heads: 24
#> Treatments: 5

summary(
  fit
)
#> 
#> Logistic-Exponential (LE0) model summary
#> ----------------------------------------
#> Total bottles: 24
#> Successful fits: 23
#> Failed fits: 1
#> Low R-squared (< 0.90): 2
#>