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Re: [GNUnet-developers] GNUnet SVN HEAD FTBS?

From: Milan
Subject: Re: [GNUnet-developers] GNUnet SVN HEAD FTBS?
Date: Mon, 11 Feb 2008 10:11:07 +0100
User-agent: Thunderbird (X11/20071022)

Christian Grothoff a écrit :
> This is certainly why we got fewer results, but getting bogus results is not 
> really the goal here ;-).
Sure, what I was fearing is more an inadequate query processing like...
>   The current issue that I am trying to fix is more 
> fundamental: previously, a peer could respond to a (repeated) query for the 
> same keyword with the same response millions of times, essentially not 
> contributing anything (but getting rewards in terms of trust).  Databases 
> spewing out always the same first result to a query matching possibly 
> thousands of entries made this kind of behavior the norm.
...this one. ;-)
As I understand it, this little bug can have blocked most of the files
from being shown.
> The code in SVN changes the query format to include a bloomfilter which 
> *excludes* certain responses. In essence, the query is extended to 
> specifically exclude responses that the client has already seen.  That way, 
> other peers have an incentive (and are forced to) produce *diverse* result 
> sets.
> That's the main change describing the essence of how the new code will 
> hopefully increase the number of search results.
Really nice. I expect this kind of change to be really major for the
range of results we get.

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