<div dir="ltr"><div>Hi Alyson,</div><div><br></div>Jo is right, you'd want an ordinal logistic regression (aka ordered logit). Perhaps this implementation? (I'm afraid I haven't tried it...)<div><br></div><div><a href="https://github.com/fabianp/minirank/blob/master/minirank/logistic.py">https://github.com/fabianp/minirank/blob/master/minirank/logistic.py</a><br></div><div><br></div><div>cheers,</div><div>Francisco</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Feb 18, 2016 at 9:42 AM, Jo Etzel <span dir="ltr"><<a href="mailto:jetzel@wustl.edu" target="_blank">jetzel@wustl.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">There's nothing at all wrong with a categorical classifier if you think of your four stimulus orientations as *categories* - four different stimulus types.<br>
<br>
But if you want to analyze the orientations as ordered classes (e.g., 15 degrees half of 30 degrees; 75 more than 15), then yes, you will need a different classifier.<br>
<br>
Jo<div><div class="h5"><br>
<br>
<br>
<br>
On 2/17/2016 4:58 PM, Alyson Saenz wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
Hey guys, I already analyzed my data but I think I can do better. I was<br>
wondering if you can give me a hand.<br>
<br>
<br>
I have a visual task with a continuous stimuli, oriented bars. I<br>
presented several times specific degrees of the stimuli, so 15°, 30°, 60<br>
and 75°. I tried to predict the orientation of the bars by analizing VI,<br>
now, the problem is that I’m using a categorical classifier (the one on<br>
the tutorial, LinearCSVM), I believe there should be a better one for<br>
continuous data. Does that make any sense?<br>
<br>
<br>
Thanks! And sorry for the newbie question<br>
<br>
<br>
<br></div></div>
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<br>
-- <br>
Joset A. Etzel, Ph.D.<br>
Research Analyst<br>
Cognitive Control & Psychopathology Lab<br>
Washington University in St. Louis<br>
<a href="http://mvpa.blogspot.com/" rel="noreferrer" target="_blank">http://mvpa.blogspot.com/</a><br>
<br>
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