|Message: Is there a good way to 'continuously bias' a particle by monkeying with weight?||Not Logged In (login)|
Click on the Forum title, e.g. on the "Forums by Category" page, to read a sequence of postings to the Forum and its threads all in one page. If you are only interested in one thread or the thread following a specific posting, click the thread or the posting, which takes you to a smaller page, which contains only the part you are interested in and may be easier to navigate.
Messages are "chained" if there are only replies at the first level, i.e. 1/1.html, 1/1/1.html etc. In case of "chained" messages the message number is replaced by the icon and there is no indentation.
Inline: Display the subject line only or also the text of the posting(s); for the choice "All" the "Outline" choices are switched off.
|1||0||1||no text / full text of posting|
|2||1||All||text for level 1 only / text for All postings|
Outline: Choose the depth of the posting thread, successive toggle controls provide increasing detail.
|1||2||1||2 levels / 1 level (original posting)|
|2||3||2||3 levels / 2 levels|
|3||3||All||3 levels / all levels (all postings)|
I've been reading the documentation on how to do biasing with interest, and I had a somewhat different idea than is currently implemented, and I am not sure if it is a good one.
In particular, I'm looking at X-rays going through shielding. One can do importance sampling on this, but you have to play with this to get it right.
I'm wondering if I can just do this: NEVER kill an x-ray as it goes through shielding. Instead, whenever it has an event or process which WOULD kill it, just reduce the weight.
The idea is that you can keep a constant number of particles and get good statistics, because one has lots, but still get the right answer because even though everyone survives, they have lost the right amount of weight.
Does this make sense? Can it work? Has someone already done it successfully? It seems like this *should* be pretty easy to do, but I am not confident I understand the issues properly. Or is this already one of the options and I just failed to understand the documentation? (If so, well, help please?)
|Inline Depth:||Outline Depth:||Add message:|