Merged contexts in a COVLMC

The function returns NULL when the context represented by the node parameter is not merged with another context (see is_merged()). In the other case, it returns a list of contexts with which this one is merged.

Usage

merged_with(node)

Arguments

node

A ctx_node_covlmc object as returned by find_sequence() or contexts.covlmc()

Value

NULL or a list of contexts merged with node represented by ctx_node_covlmc objects

Details

If the context is merged, the function returns a list with one value for each element in the state space (see states()). The value is NULL if the corresponding context is not merged with the node context, while it is a ctx_node_covlmc object in the other case. A context merged with node differs from the context represented by node only in its last value (in temporal order) which is used as its name in the list. For instance, if the context ABC is merged only with CBC (when represented in temporal ordering), then the resulting list is of the form list("A" = NULL, "B" = NULL, "C"= ctx_node_covlmc(CBX)).

See also

is_merged()

Examples

pc_week_15_16 <- powerconsumption[powerconsumption$week %in% c(15, 16), ]
elec <- pc_week_15_16$active_power
elec_dts <- cut(elec, breaks = c(0, 0.4, 2, 8), labels = c("low", "typical", "high"))
elec_cov <- data.frame(day = (pc_week_15_16$hour >= 7 & pc_week_15_16$hour <= 18))
elec_tune <- tune_covlmc(elec_dts, elec_cov, min_size = 5)
elec_model <- prune(as_covlmc(elec_tune), alpha = 3.961e-10)
ctxs <- contexts(elec_model)
for (ctx in ctxs) {
  if (is_merged(ctx)) {
    print(ctx)
    cat("\nis merged with\n\n")
    print(merged_with(ctx))
  }
}
#> Context [T]: low, typical 
#>  followed by low (44), typical (70), high (6)
#> 
#> is merged with
#> 
#> $low
#> NULL
#> 
#> $typical
#> NULL
#> 
#> $high
#> Context [T]: high, typical 
#>  followed by low (2), typical (58), high (11)
#> 
#> Context [T]: high, typical 
#>  followed by low (2), typical (58), high (11)
#> 
#> is merged with
#> 
#> $low
#> Context [T]: low, typical 
#>  followed by low (44), typical (70), high (6)
#> 
#> $typical
#> NULL
#> 
#> $high
#> NULL
#>