lump: Aggregate a Markov chain over a partition

In markovchain: Easy Handling Discrete Time Markov Chains

Aggregate a Markov chain over a partition

Description

Coarsens a Markov chain to a reduced state space. By default the function requires exact lumpability. With force = TRUE, it performs an approximate aggregation using stationary weights when available and arithmetic averages for macro-states with zero stationary mass.

Usage

lump(object, partition, force = FALSE)

## S4 method for signature 'markovchain'
lump(object, partition, force = FALSE)

Arguments

object	A markovchain object.
partition	A named list of character vectors defining macro-states.
force	If FALSE, stop unless the chain is exactly lumpable. If TRUE, return a weighted approximate lumping.

Value

A markovchain object on the macro-state space.

markovchain documentation built on Oct. 10, 2026, 9:07 a.m.