lower | R Documentation |
Calculate the lower bounds for a vector of sets
lower(x, sets)
x |
credal set or mass function |
sets |
vector of sets where each set is represented by state names separated by "/". If sets are missing, lower bounds on singletons are calculated. |
lower bound of mass or probability for each set in the vector sets or if sets is missing lower bounds on singletons
This is equivalent to belief in Dempster-Shafer theory
Alexander Karlsson
Shafer, G., (1976), A Mathematical Theory of Evidence Princeton University Press
Walley, P. (2000), Towards a unified theory of imprecise probability, International Journal of Approximate Reasoning, 24, 125-148
upper
# state space stateSpace <- c("a", "b", "c") # mass function m <- mass(list("a"=0.1, "b"=0.1 , "c"=0.4, "a/b/c"=0.4), stateSpace) # credal set c <- credal(c(0.1, 0.1, 0.1), c(0.8, 0.8, 0.8), stateSpace) # calculate lower bounds lower(m, c("a", "a/b")) lower(c, c("a", "a/b")) # lower bounds on singletons lower(m)
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