[Cs4800] How does scoring work?

[Srinivas N Jay]

Hi Guys,

First thing I want to say is, take it easy! It is obvious that you wouldn't
be graded based on an erroneous system. So just relax.  The system is new
for us too and we are not familiar with entire code base. It was never been
tested with so many people participating in a tournament. So obviously
there will be some bugs.

I believe this is an awesome way to learn algorithms. So if you find any
bugs please let us know rather than being worried about your grades. We
together has to work and fix these bugs to make it a better system.

We are working continuously to improve the system. As you can see Tuesday's
tournament was much better than Monday's.

Thanks a lot for finding out bugs. We will fix them soon.

Best,
Srinivas

On Tue, Nov 8, 2011 at 11:26 PM, David Richards <dirich at ccs.neu.edu> wrote:

> To further support my theory that there's a bug:
>
> If you look in the "proceed" method of scg.protocolInterpreter.
> StrengtheningProtocolInterpreter
> you will see that it calls claim.getProtocol().strengthenP(originalClaim,
> claim)) as follows:
>
> > if (!claim.getProtocol().strengthenP(originalClaim, claim)) {
> >                       updateReputation(0, 1); // Alice wins
>
>
> If we look at the scg.protocol.ForAllExistsMin class we can see that it
> doesn't implement
> strengthenP(…) so it must inherit it from it's superclass which is
> scg.protocol.ForAllExists.
> The implementation of strengthenP(…) in that file is the following:
>
> >        // return true iff the strengthenedClaim is stronger than the old
> claim
> >       public boolean strengthenP(Claim oldClaim, Claim
> strengthenedClaim){
> >               return strengthenedClaim.getQuality() >
> oldClaim.getQuality();
> >       }
>
> Clearly this is wrong for the ForAllExistsMin protocol since strengthened
> claims have
> smaller qualities.
>
> -David Richards
>
> On Nov 8, 2011, at 11:13 PM, Greg I Kerr wrote:
>
> > After looking at the log, I agree with David. It's pretty clear that
> strengthening a proposal does not win any points (and that the server never
> asks for a solution to be provided). This is concerning as strengthening
> claims is a major part of the game.
> >
> > - Greg
> >
> > On Tue, Nov 8, 2011 at 10:59 PM, David Richards <dirich at ccs.neu.edu>
> wrote:
> > Could you explain how to defend my strengthening?  If the server were to
> ask for a solution I would provide it…
> > so clearly the server isn't asking me to defend the strengthening.
> >
> > -Dave
> >
> > On Nov 8, 2011, at 10:50 PM, srinivasnjay wrote:
> >
> > > I was with Matt when he replied you. Strengthening protocol requires
> you to defend your strengthened claims. If you fail to do so, opponent will
> again points.
> > >
> > > - N Jay
> > >
> > > On Nov 8, 2011, at 22:42, David Richards <dirich at ccs.neu.edu> wrote:
> > >
> > >> Again: how does the scoring work and why does strengthening a claim
> seem to lose you points?
> > >>
> > >> In this match:
> http://tank.ccs.neu.edu:7007/tournament_details?resource=smart_history&session=B0E44B907BCC44D0&tournament_id=43&history_file=usb2%20vs%20dirich11-08-11-22-18-54.txt
> > >> I successfully defended all my claims, refuted invalid claims, and
> strengthened poor claims, and
> > >> yet my opponent ended up with more points than I did…
> > >>
> > >> I don't think it's fair to grade us based on a buggy non-transparent
> scoring system.
> > >>
> > >> -David Richards
> > >> _______________________________________________
> > >> Cs4800 mailing list
> > >> Cs4800 at lists.ccs.neu.edu
> > >> https://lists.ccs.neu.edu/bin/listinfo/cs4800
> >
> >
> > _______________________________________________
> > Cs4800 mailing list
> > Cs4800 at lists.ccs.neu.edu
> > https://lists.ccs.neu.edu/bin/listinfo/cs4800
> >
>
>


-- 
***Race A Race Where You Are The Goal For Every Opponent! - *N Jay****

Srinivas *N Jay*
srinivasnjay at gmail.com
+1(617)-817-0913
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