summary.ShiftModel: Summary of a ShiVa Shift Model

In ShiVa: Detection of Evolutionary Shifts in Both Optimal Value and Variance

Summary of a ShiVa Shift Model

Description

Generate a summary of a fitted ShiVa model object, including estimated parameters and details of detected shifts in optimal trait value (mean) and evolutionary variance.

Usage

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

Arguments

object	An object of class ShiftModel, typically returned by functions such as fit_OU_mean_var(), or extracted as best_model from get_mean_var_shifts_model_selection() or ShiVa().
...	Additional arguments (currently unused).

Value

An object of class summary.ShiftModel, which includes:

• alpha: Estimated selection strength parameter.

• sigma2: Estimated diffusion variance.

• loglik: Log-likelihood of the fitted model.

• BIC: Bayesian Information Criterion.

• mean_shifts: A data frame of branches with shifts in optimal value.

• var_shifts: A data frame of branches with shifts in evolutionary variance.

ShiVa documentation built on Aug. 22, 2025, 9:14 a.m.