On 9/14/2006 5:26 PM, Mark Pinkerton wrote:
> Hi Duncan,
> I had also validated the logic with a simple test which is why I was 
> surprised by the differences I was seeing from tthe more complex simulation. 
> I am running R on a Windows 2000 - I'll have to check which version at my 
> desk tomorrow but it's pretty up to date, maybe 6 monthes old. Attached is a 
> code snippet  from my simulation program which is used to estimate 
> multi-event annual losses for US hurricanes. The event set being sampled from 
> is quite large (~14000) with each event and account combination having a 
> unique beta loss distribution. Simply swapping lines 23 and 24 has the effect 
> on results that I mentioned in the previous email. The simulation is large 
> enough that the MC error in the estimated means are negligible.

The code you sent isn't usable, because it's missing your data.  Could 
you please do the following?

  - verify that the behaviour still happens in the current alpha test 
version

  - try to simplify the example code so someone else can run it?  It 
could be that certain values of alpha and beta trigger a bug but the 
ones I tried were fine.

Duncan Murdoch

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