Nabble - Simbrain

Re: Getting started

2008-04-11T09:01:37Z

Thanks for replying, Jeff. I typed in an edit before reading your stuff. I like to be active and useful to the forum.
Max2000

Re: Getting started

2008-04-11T08:32:19Z

Hi Max,

You just have to double click on the Simbrain.jar file (inside the folder you unpacked). There is no .exe file. Let me know if you still run into problems.

- Jeff

Getting started

2008-04-10T15:08:20Z

I just downloaded the Simbrain ZIP file and uppacked it. But can't find an executable to run. How to get the program started ?

Regards
Max 2000

Aaahh, and here is the answer, I believe. Simbrain.jar (double click to get simbrain going) shows up in the simbrain2 map as a winrar archive, which I unpacked as well. Just double clicking, without unpacking, does the trick. I hope I have got it right now but it seems to work.

Regards
Max 2000

Re: training a backprop network using odor world data

2008-03-17T12:55:43Z

Hello, and thanks for your query.

There is some documentation on this:

http://www.simbrain.net/Documentation/docs/Pages/Network/network/backpropnetwork.html
http://www.simbrain.net/Documentation/docs/Pages/Network/network/trainingFile.html

On the first page, see the bottom under "training."

The overall process is a bit counterintuitive (relative to the overall visual emphasis of Simbrain). The basic method is to right click on the backprop tab, select "Train Backprop Network" and then to specify input and output files. You have to manually create those files outside of Simbrain. All the training happens in the dialog. (In version 3 we are changing things so that training networks is much more flexible and intuitive).

Most of the training files I've used are in the folder {Simbrain_Home}/simulations/networks/bp/training.

To train a network to respond in some way to OdorWorld objects, you should build your Odor World environment and Simbrain network, see how the OdorWorld objects affect the input layer of the network, and then manually create your training files. Then you can use those files to train the network.

Let me know if this helps,

- Jeff

training a backprop network using odor world data

2008-03-17T00:01:55Z

Hi,

Thanks for putting up Sim brain. it is a very useful tool to teach neural nets.

I am trying to play with training backprop networks using odor world. backprop 3-5-3.sim and backprop auto-3.sim are the demos. But they are networks that are already trained, and we can just run them. How was the training acheived? using what data?

Thanks

Re: Error loading simbrain files on Ubuntu

2008-01-31T12:19:39Z

Ouch! Ok, I'll try running on Ubuntu to see if I can replicate the problem. It may take me a few days to get back to you as I hunt down a suitable machine for testing. Thanks,

- Jeff

Re: Error loading simbrain files on Ubuntu

2008-01-31T12:15:23Z

Hello, thanks for your reply!

I tried to open other files (workspace files, networks files...) but I always get this error. I tried to change all files permissions but it don't work.

I tried to save a random neural net or workspace and I don't get any error message, but simbrain only create empty files.

Re: Error loading simbrain files on Ubuntu

2008-01-29T08:00:14Z

Hello,

That error usually occurs when the workspace file (in this case, the default workspace, "two_agents.sim") can't be located. Simbrain stores the last open workspace file as a user preference, so that when you start Simbrain the last workspace you worked with is automatically loaded. So, you can get rid of the error simply by opening a new workspace file. To do this, just go to File > Open Workspace, and navigate to the "sims" folder, in your case /home/[userfolder]/../Simbrain2/simulations/sims and open a workspace file. two_agents.sim is in simulations/sims/vehicles.

After you open it, next time you reopen Simbrain it should automatically load that workspace file.

Tell me if this works. If not, it may be something else specific to Ubuntu (I have not tested Simbrain on Ubuntu), which I can look into.

- Jeff

Error loading simbrain files on Ubuntu

2008-01-27T11:21:16Z

Hello! and sorry for my bad english...

I get warnings like "Could not find workspace file ./simulation/sims/vehicles/two_agents.sim" each time I'm trying to open a file. It's the only thing not working correctly. How can I solve it?

Instalation path is /home/[userfolder]/../Simbrain2/, and I don't execute it with root user. I don't know if this is important.

Thanks!

echo

2007-12-13T23:17:55Z

Greetings / News

2007-11-22T01:18:43Z

Well, here's an initial post to this forum. Simbrain 3.0 is being actively developed, and I'm hoping for a release this summer. We have a developer list-serv and wiki, but there is no forum for public discussion, etc., so here goes.

- Jeff