Fit a poisson distribution (radioactive decay is a Poisson process),
recompute lambda for whatever bin-size you need, and compute
the new (estimated) bin counts by maximum likehood. It basically
becomes a contrained optimization problem.
Sturla
Den 13.11.2011 17:04, skrev Johannes Bauer:
Hi
On 11/13/11 9:55 AM, Olivier Delalleau wrote:
idea, since it will throw out a lot of information if you decrease the
number of bins:
I agree -- I'd think about looking at a smooth interpolation -- maybe
kernel density estimation?
On 11/14/11 8:12 AM, Sturla Molden wrote:
Fit a poisson
Hi group,
I have a rather simple problem, or so it would seem. However I cannot
seem to find the right solution. Here's the problem:
A Geiger counter measures counts in distinct time intervals. The time
intervals are not of constant length. Imaging for example that the
counter would always
On Sun, Nov 13, 2011 at 16:04, Johannes Bauer dfnsonfsdu...@gmx.de wrote:
Hi group,
I have a rather simple problem, or so it would seem. However I cannot
seem to find the right solution. Here's the problem:
A Geiger counter measures counts in distinct time intervals. The time
intervals are
Just one thing: numpy.interp says it doesn't check that the x coordinates
are increasing, so make sure it's the case.
Assuming this is ok, I could still see how you may get some non-smooth
behavior: this may be because your spike can either be split between two
bins (which dilutes it somehow), or
Also: it seems like you are using values at the boundaries of the bins,
while I think it would make more sense to compute interpolated values at
the middle point of a bin. I'm not sure it'll make a big difference
visually, but it may be more appropriate.
-=- Olivier
2011/11/13 Olivier Delalleau
(Sorry for the spam, I should have given more thought to this before
hitting reply).
It actually seems to me that using a linear interpolation is not a good
idea, since it will throw out a lot of information if you decrease the
number of bins: to compute the value at time t, it will only use the
On Sun, Nov 13, 2011 at 17:48, Olivier Delalleau sh...@keba.be wrote:
Also: it seems like you are using values at the boundaries of the bins,
while I think it would make more sense to compute interpolated values at the
middle point of a bin. I'm not sure it'll make a big difference visually,
2011/11/13 Robert Kern robert.k...@gmail.com
On Sun, Nov 13, 2011 at 17:48, Olivier Delalleau sh...@keba.be wrote:
Also: it seems like you are using values at the boundaries of the bins,
while I think it would make more sense to compute interpolated values at
the
middle point of a bin.
