Re: [igraph] InfoMap and Isolated Vertices

[Thomas Lin Pedersen]

I don’t know - While I’m not 100% sure I can’t recall anything about that from the initial article.

The only thing I can say is that it seems to work fine on my extremely sparse graphs…

On 15 Jan 2015, at 17:52, Nick Eubank <address@hidden> wrote:

I'm not entirely sure -- I've been having trouble getting infomap to run to completion on a very large network (10 million nodes, 200 million edges), and while trouble shooting found that note in the C documentation and (a) thought it might be an explanation, and (b) was nervous about that note not appearing in the other documentation. I'm running infomap on the giant component now to see if that fixes the problem, but it's not done yet...

Do you think the note in the C documentation is wrong or out of date?

On Thu, Jan 15, 2015 at 12:21 AM Thomas Lin Pedersen <address@hidden> wrote:

Can this be elaborated upon? I use infomap on very sparse graph that both contains unconnected subgraphs as well as zero-degree vertices and haven’t experienced any problems…

/Thomas

On 14 Jan 2015, at 22:22, Gábor Csárdi <address@hidden> wrote:

Agreed! https://github.com/igraph/rigraph/issues/59 Gabor

On Wed, Jan 14, 2015 at 3:17 PM, Nick Eubank <address@hidden> wrote:

Hi All,

Two quick things:

 - the C notes for community_infomap() say infomap can't take isolated vertices. It might be a good idea to put that note in the python and R documentation. I only found it after lots of trouble shooting. 

 - Does "isolated vertices" mean no vertices of degree zero, or no disconnected components?

Thanks!

Nick

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