On Tuesday 05 August 2008 18:31, Michael Rogers wrote:
> Matthew Toseland wrote:
> > Well, a small world network has a low diameter almost by definition ...
> 
> Exactly - MAX_DEPTH is set to 10, which is probably higher than the
> diameter of the network, to make sure the success rate is very close to
> 100%, because success rate isn't what I'm trying to measure.
> 
> > you're sure it won't skew the results?
> 
> Depends on what you're trying to measure. I'm interested in (1) how many
> nodes an effectively unlimited search visits before finding the data,

Which you measure via the HashSet.

> and (2) the length of the return path. 

Right.

You show both of these outcomes?

> If you also want to measure how 
> well a particular HTL scheme approximates an unlimited search then I
> think you might need to run a separate set of simulations, otherwise you
> won't be able to separate failures-due-to-HTL-scheme from
> failures-due-to-caching-scheme.
> 
> > Could you make the proposed change and re-run 
> > and see if it makes any difference to the outcome? (I'd expect more hops, 
> > more failures, so a more pronounced difference??)
> 
> Sorry, I've lost access to those 50 PCs so I doubt I'll get it done any
> time soon.
> 
> >>> Also, do you use the request rate code?
> >> No, there are no bandwidth limits in these simulations and the network
> >> only handles one request at a time - I had to strip out as much as
> >> possible to be able to simulate more than 100 nodes.
> > 
> > Okay so it's just left-over code.
> 
> Ah, sorry, I see what you mean now - I thought you were talking about
> throttling.
> 
> The request rate of a key represents its popularity. Requests for each
> key are generated by a Poisson process with rate proportional to the
> key's popularity, and each request runs to completion before the next
> request starts.
> 
> Cheers,
> Michael
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