Ian Clarke <[EMAIL PROTECTED]> writes: >On Wed, Oct 01, 2003 at 06:41:50PM -0400, Ed Tomlinson wrote: >> On October 01, 2003 06:23 pm, Ian Clarke wrote: >> > Yes, but if pSF==1 then that implies that all searches failed, which >> > clearly contradicts the fact that I observed many nodes with pSF=1 but >> > with successfulTransfers > 0. >> >> pSF is a estimate. If you happened to be watching just after it succeeded >> you would find it at about 0.8 and it would slowly go back to .9999 as >> the next 100 or so queries were rejected. > >I haven't done the math, but I suspect it would take a *very* long time >for the running average to return to 1 after a successful search. 0.9999 >maybe, but not 1. I think that your explanation is unlikly.
The running average should return to 1 asymptotically, at a rate which depends on the decay factor used. In Ed's example, you should see a series like: 1, 0.8, 0.84, 0.872, 0.8956, 0.9165, 0.9332, 0.9466, 0.9573... Obviously, it should never reach 1 exactly, though it will approach 1 as closely as you like given enough time. theo -- Theodore Hong Dept. of Computing, Imperial College London [EMAIL PROTECTED] 180 Queen's Gate, London SW7 2BZ PGP key: http://www.doc.ic.ac.uk/~twh1/ _______________________________________________ Devl mailing list [EMAIL PROTECTED] http://dodo.freenetproject.org/cgi-bin/mailman/listinfo/devl
