CSP Spatial Filter Trainer

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Aline Buzzi
Posts: 9
Joined: Mon Oct 12, 2015 2:47 pm

CSP Spatial Filter Trainer

Post by Aline Buzzi »

Hi Dear,

I'm starting to use OpenVibe in few days just, because that my doubt can be ridiculus, if is sorry :) .

I need to train a classifier. Because that I saw the tutorials and I found the file "mi-csp-2-train-csp.xml" this scenario computes Common Spatial Pattern to produce a spatial filter that maximizes the difference between the signal of the two classes. I have just done one modification, I put the 'GDF file Reader' where had the 'generic stream reader'. But, the problem is that the box 'CSP Spatial filter trainer' don't generate a file with the configurations about my spatial filter. And the worst is that the Openvibe non return error or warnings.

My question is: Anyone knows what, maybe, is happen?

Thank you :)

fabien.lotte
Posts: 112
Joined: Sun Mar 14, 2010 12:58 pm

Re: CSP Spatial Filter Trainer

Post by fabien.lotte »

Maybe you could post your scenario so we can know more about what can go wrong?
Also, what messages do you have in OpenViBE console?

Aline Buzzi
Posts: 9
Joined: Mon Oct 12, 2015 2:47 pm

Re: CSP Spatial Filter Trainer

Post by Aline Buzzi »

Hi,

So, first, I used the scenario 'mi-scp-1-acquisition.xml' and I modified the Lua stimulator. The configuration file that I used in Lua Stimulator in attached. And where have the acquisition client I put the GDF writer which I put my signal file.
Then, how I said I used the mi-csp-2-train-CSP.xml, I just put the GDF file reader.

In the console appear just:
[ INF ] Adding configuration file(s) [C:/Program Files (x86)/openvibe//share/openvibe/kernel/openvibe-delayed.conf]
[ INF ] Adding configuration file(s) [C:/Users/Windows/AppData/Roaming/openvibe/openvibe-delayed.conf]
[ INF ] Adding configuration file(s) [C:/Users/Windows/Desktop/IC/Programas OpenVibe/scenario.conf]

I send how attachments the both scenarios that I said and my lua stimulator configuration.
Attachments
mi-csp-2-train-CSP.xml
(28.49 KiB) Downloaded 304 times
mi-csp-1-acquisition.xml
(25 KiB) Downloaded 299 times
Stimulu-rdre.txt
(2.33 KiB) Downloaded 309 times

fabien.lotte
Posts: 112
Joined: Sun Mar 14, 2010 12:58 pm

Re: CSP Spatial Filter Trainer

Post by fabien.lotte »

Hello,

Sorry for the late reply. There are two things that seem a bit weird in the files you send, and may explain the error:

- in the Lua script, there is a line "a = 2b = a+2", and b is undefined. I think b should be defined, and Lua probably does not allow two variable assignment in a row. First define, b, then a. But if b is defined as a function of a, and a as a function of b, that cannot work.

- in the acquisition scenario, you don't use an acquisition server but a gdf reader: where does the file you put there comes from? And why the need for an acquisition scenario if don't acquire anything?

I hope this helps,

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