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Add Stratified Randomization to MultiCellMarketSelection #143

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Add Stratified Randomization to MultiCellMarketSelection #143

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Added Stratified Randomization as a sampling method for MultiCellMark…
Th3Bust3r May 15, 2023
0b3c658
Added Stratified Randomization as a sampling method for MultiCellMark…
Th3Bust3r May 15, 2023
a0db356
Merge branch 'facebookincubator:main' into main
Th3Bust3r May 17, 2023
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10 changes: 9 additions & 1 deletion R/MultiCell.R
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Original file line number Diff line number Diff line change
Expand Up @@ -147,7 +147,7 @@ MultiCellMarketSelection <- function(data,
}

# Check Sampling Method
if(!(tolower(sampling_method) %in% c("systematic"))){
if(!(tolower(sampling_method) %in% c("systematic", "stratified"))){
stop("\nEnter a valid sampling_method (check the function documentation for more details).")
}

Expand Down Expand Up @@ -202,6 +202,14 @@ MultiCellMarketSelection <- function(data,
rank_by_loc$cell[seq(r[i], locs_N, k)] <- i
}
}
# Stratified or 'Block' Randomization
else if(tolower(sampling_method) == "stratified"){
rank_by_loc$strata <- ceiling(1:locs_N/k)

for (i in 1:max(rank_by_loc$strata)){
suppressWarnings(rank_by_loc$cell[rank_by_loc$strata==i] <- sample(1:k,k))
}
}

# Initializing output objects
GeoLift_Markets <- list()
Expand Down