[Cs4800] How does scoring work?

[David Richards]

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
>