Hi - that sounds fine - at this stage TFCE is 'better' than dumb
cluster-based - but it is a lot slower.
Cheers.
On 15 Apr 2008, at 17:00, Deryk Beal wrote:
> Hello Everyone
>
> I am interested in comparing results from an independent t-test of a
> patient group and a control group using both TFCE & Cluster-based
> thresholding. I ran randomise once using the -T command and 5000
> permutations. The permutations, as expected, took about 1 minute 45
> seconds each on my single core 3.0GHz computer for a total of about
> 7 days processing time. I then reran randomise using the -c option
> and a threshold of 3. This time each permutation only took 15
> seconds per - for total of 5-6 hours running time. In talking with
> colleagues this processing time seems awfully short. Is it okay to
> re-run randomise like this in the same stats folder, with different
> output names of course, or is something happening that I'm not
> picking up on?
>
> Cheers,
>
> Deryk
>
>
> --
> Deryk Beal, M.HSc., S-LP(C), Reg. CASLPO
> Speech-Language Pathologist
> Doctoral Candidate
> 416-946-8635
> [log in to unmask] or [log in to unmask]
> *************************************************************************
> This email may contain confidential and/or privileged information
> for the
> sole use of the intended recipient. Any review or distribution by
> others is
> strictly prohibited. If you have received this email in error, please
> contact the sender and delete all copies. Opinions, conclusions or
> other
> information expressed or contained in this email are not given or
> endorsed
> by the sender unless otherwise affirmed independently by the sender.
---------------------------------------------------------------------------
Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
---------------------------------------------------------------------------
|