construct_extractors: Construct a list of extractors for parsnip models

In tidysynthesis: A Common API for Synthesizing Data

Construct a list of extractors for parsnip models

Description

Construct a list of extractors for parsnip models

Usage

construct_extractors(
  roadmap,
  default_extractor = NULL,
  custom_extractors = NULL
)

Arguments

roadmap	A roadmap object
default_extractor	An extractor from library(parsnip)
custom_extractors	A formatted list of extractors

Value

A named list of extractors

Examples

# construct_extractors() can create a sequence of extractors using a fully-default 
# approach, a hybrid approach, or a fully-customized approach. All approaches
# require a roadmap and extractors. 

rm <- roadmap(
  conf_data = acs_conf_nw,
  start_data = acs_start_nw
)

# Fully-default approach

construct_extractors(
  roadmap = rm, 
  default_extractor = parsnip::extract_fit_engine
)

# Hybrid approach

construct_extractors(
  roadmap = rm, 
  default_extractor = parsnip::extract_fit_engine,
  custom_extractors = list(
    list(vars = "hcovany", extractor = parsnip::extract_parameter_dials)
  )
)

# Fully-customized approach

construct_extractors(
  roadmap = rm, 
  custom_extractors = list(
    list(
      vars = c("hcovany", "empstat", "classwkr"), 
      extractor = parsnip::extract_fit_engine
    ),
    list(
      vars = c("age", "famsize", "transit_time", "inctot"), 
      extractor = parsnip::extract_parameter_dials
    )
  )
)

tidysynthesis documentation built on March 17, 2026, 1:06 a.m.