Model Extensions

BAM Engine includes three built-in extensions that add economic mechanisms beyond the baseline BAM model.

Quick Start

Each extension provides an Extension bundle that activates all its components in a single call:

import bamengine as bam
from extensions.rnd import RND

sim = bam.Simulation.init(seed=42)
sim.use(RND)

results = sim.run(n_periods=1000, collect=True)

Individual components (roles, events, config) are also available for manual activation; see Model Extensions for the manual pattern.

Available Extensions

Extension	Book Section	Description
Growth+ (R&D) Extension	Section 3.8	Endogenous productivity growth via R&D investment
Buffer-Stock Consumption Extension	Section 3.9.4	Target savings-to-income ratio consumption rule
Taxation Extension	Section 3.10.2	Profit taxation for structural experiments

Multiple extensions can be combined. See Model Extensions for the combining pattern and for writing your own extensions.