Re: [igraph] trying to understand edge betweeness community detection implemented in igraph (re-send)

[Enzo Tagliazucchi]

Dear Gabor,

I've tested this code in Ubuntu linux (version 8.04) and in Kubuntu linux (version 7.10, recently updated to latest version).

I compile the code using:  

gcc community.c -I/usr/local/include/igraph  -L/usr/local/lib -ligraph

I just updated gcc to the latest version - the problem persists (according to ubuntu's package manager, the version is 4:4.2.3-1ubuntu6).

The igraph version I'm using is 0.5.2.

In the attachments you'll find the karate graph I'm using, and the code I'm using (the one which generates the weird community values).

I've checked and cross-checked everything as much as I could. I might be overlooking something or making some stupid mistake, I hope this isn't the case...

(no problem about the delay, this is by no means urgent, I just need to get it working from here to some time in the future)

thanks a lot, again!

Enzo

On Fri, May 22, 2009 at 1:08 AM, Gábor Csárdi <address@hidden> wrote:

Enzo, I have just run your code, and both programs print the same
values, so this is quite strange. You might have a broken or old
igraph installation. Please try to give me all information that I
might need to reproduce this:

- igraph version
- operating system and compiler version
- how did you compile the programs (i.e. gcc options if you use gcc)
- send me the karate.txt file as an attachment

Thanks,
G.

ps. I will be offline for most of the following three days, and might
answer on Monday only, sorry about that.

On Thu, May 21, 2009 at 11:39 PM, Enzo Tagliazucchi <address@hidden> wrote:
> Gabor,
>
> I don't get the same values. When running the following code (which prints
> the modularity values obtained by the merges, without constructing the
> membership vector),
>

[...]

>
> All this implies to me that either:
> a)  something is going wrong with the algorithms or my code (unlikely to me)
> b)  I've problems interpretating the results of the algorithms  (this might
> be the case)

[...]

--

Gabor Csardi <address@hidden>     UNIL DGM


_______________________________________________
igraph-help mailing list
address@hidden
http://lists.nongnu.org/mailman/listinfo/igraph-help

karate.txt
Description: Text document

community.c
Description: Text Data