Extract rules from a party object — extract

Extract interpretable decision rules from a partykit party or constparty object. Each terminal node becomes one rule representing the path from root to that leaf.

Usage

# S3 method for class 'party'
extract_rules(x, ...)

Arguments

x: A party or constparty object from the partykit package.
...: Not currently used.

Value

A tibble with class c("rule_set_party", "rule_set") and columns:

id: integer, the terminal node ID.
rules: list of R expressions, one per terminal node.

Examples

fit <- partykit::ctree(Species ~ ., data = iris)
extract_rules(fit)
#> # A tibble: 4 × 2
#>      id rules     
#>   <int> <list>    
#> 1     2 <language>
#> 2     5 <language>
#> 3     6 <language>
#> 4     7 <language>