On 9 Jan 2006, at 16:07, Oskar Sandberg wrote:

> Ian Clarke wrote:
>> One of the most useful parts of the visualization is a histogram  
>> of  the link connection lengths.  Some may recall that the goal is  
>> for  the probably of the existence of a connection to be  
>> proportional to 1/ D where D is the length of the connection (ie.  
>> the difference between  the node's locations).  The effectiveness  
>> of Oskar's location  swapping algorithm can be measured by how  
>> well the network conforms  to this pattern.  As you can see from  
>> the attached image, right now  it is performing extremely well,  
>> even on such a small network.
>
> Not be the pessimist just because I am, but one thing that I have  
> seen is that the algorithm is very good at quickly creating a link  
> length distribution that looks correct. It is, unfortunately, a  
> much harder problem to make a network that routes well. (I can  
> create graphs with a great looking distribution, but where routing  
> fails horribly.)

How would you create a network with good-looking distribution, but  
which doesn't route well?

Ian.

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