Displaying 2 results from an estimated 2 matches for "improvedlhs".
2008 May 29
1
Bimodal Distribution
Hello R Users,
I am doing a Latin Hypercube type simulation. I have found the
improvedLHS function and have used it to generate a bunch of properly
distributed uniform probabilities. Now I am using functions like qlnorm
to transform that into the appropriately lognormal or triangularly
distributed parameters for my modes. However I have a parameter which I
believe is bimodally distr...
2008 Nov 23
2
Latin Hypercube with condition sum = 1
Hi
I want to du a sensitivity analysis using Latin Hypercubes. But my
parameters have to fulfill two conditions:
1) ranging from 0 to 1
2) have to sum up to 1
So far I am using the lhs package and am doing the following:
library(lhs)
ws <- improvedLHS(1000, 7)
wsSums <- rowSums(ws)
wss <- ws / wsSums
but I think I can't do that, as after the normalization
> min(wss)
[1] 0.0001113015
> max(wss)
[1] 0.5095729
Therefore my question: how can I create a Latin Hypercube whicgh
fulfills the conditions 1) and 2)?
Thanks a lot
Rainer...