Nothing
shd <- function(est, true) {
mat <- table(est, true)
a1 <- sum(est == 0 & true == 1) + sum(est == 1 & true == 0)
a2 <- sum(est == 0 & true == 2) + sum(est == 2 & true == 0)
a3 <- sum(est == 1 & true == 2) + sum(est == 2 & true == 1)
a4 <- sum(est == 3 & true == 2)
list(mat = mat, dis = a1 + a2 + a3 + a4)
}
## SHD as defined in Tsamardinos et al. (2006)
## True Estimated Penalty
## - 1 (a1)
## - 1 (a1)
## -> 1 (a2)
## <- 1 (a2)
## -> - 1 (a3)
## - <- 1 (a3)
## -> <- 1 (a4)
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