[R] Support vector model?

[Niels Richard Hansen]

Dear Celine

If you are considering using support vector machines in R,
you might find it worthwhile to read the paper:

http://www.jstatsoft.org/v15/i09/paper

Best, Niels


Celine Carret wrote:
> Dear All,
> 
> Apologies for sending this email to both list, but at this point I'm not
> sure which one could help me the most.
> 
> I have 4 sets of data, 1 test and 3 different sets of controls.
> The measurements are binary, with a matrix of 0 and 1
> I'm measuring across time (rows, ~815) the behaviour of organelles in
> the cell by microscopy in response to different stimuli (several
> measurements for each set, 57 columns in total)
> Set 1: parasite test
> Set 2: no stimulus
> Set 3: inert stimulus (beads)
> Set 4: different pathogen
> Across time, a "zero" means nothing happens around my parasite
> introduced in the cell, a "1" means some cytoskeleton dynamics occurring
> around my parasite
> I want to give some statistical value to my observations in saying that
> the cytoskeleton dynamics are specific to my parasite at that frequency
> across time.
> 
> I thought of comparing profiles, like a smooth profile to summarise all
> that is happening in each set and test for distances between 2 smoothed
> sets. But the timig when something is happening varies a lot, sometimes
> it's few seconds, sometimes minutes, sometimes only once per
> measurements, sometimes more for the same parasite..
> I'm not sure how to proceed.
> 
> I have been looking into e1071 package in R for support vector machine,
> but I'm not sure this will give me the right model.
> 
> I am very grateful for any help / advice anyone can think of
> 
> Thank you very much
> Celine
> 
> 
> 
> 

-- 
Niels Richard Hansen
Associate Professor
Department of Mathematical Sciences
University of Copenhagen
Universitetsparken 5
2100 Copenhagen Ø
Denmark
+45 353 20783