observe_data: Observe data, given a strategy

In CausalQueries: Make, Update, and Query Binary Causal Models

Observe data, given a strategy

Description

Observe data, given a strategy

Usage

observe_data(
  complete_data,
  observed = NULL,
  nodes_to_observe = NULL,
  prob = 1,
  m = NULL,
  subset = TRUE
)

Arguments

complete_data	A data.frame. Data observed and unobserved.
observed	A data.frame. Data observed.
nodes_to_observe	A list. Nodes to observe.
prob	A scalar. Observation probability.
m	A integer. Number of units to observe; if specified, m overrides prob.
subset	A character. Logical statement that can be applied to rows of complete data. For instance observation for some nodes might depend on observed values of other nodes; or observation may only be sought if data not already observed!

Value

A data.frame with logical values indicating which nodes to observe in each row of 'complete_data'.

Examples

model <- make_model("X -> Y")
df <- make_data(model, n = 8)
# Observe X values only
observe_data(complete_data = df, nodes_to_observe = "X")
# Observe half the Y values for cases with observed X = 1
observe_data(complete_data = df,
     observed = observe_data(complete_data = df, nodes_to_observe = "X"),
     nodes_to_observe = "Y", prob = .5,
     subset = "X==1")

CausalQueries documentation built on Oct. 20, 2023, 1:06 a.m.