On Tue, 2010-10-26 at 11:41 +0200, [email protected] wrote: > Aha, could it be that Gomorra picked up some good lines from > MyGoFriend and then improves upon them? Because when kaesebrot turned > up I think it really crushed Valkyria for some time. I have now > updated the book used for Valkyria3.5.15-4cx a little bit. For sure it picked some lines, also it seems to me that Gomorra hadn't changed a lot (if at all) in strength by doing that. Probably, next weekend, I'll give it another try.
> MyGoFriend plays different from most other programs in the opening, my > guess is that MGF does not suffers from some bias inherent in most MC > programs and thus plays more natural (from human aesthetic point of > view) and stronger moves. perhaps it uses some high quality pattern > matching to bias the tree part and does not use AMAF or RAVE at all. MGF also had a superko-bug in the exp1 Version. It lost at least 2 games against Gomorra with illegal moves. That should be easy to fix if not already done in exp2. > My problem is that AMAF/RAVE makes Valkyria very strong and at the > same time it currently sets a ceiling on how strong it can play > because in many positions it seems to completely miss some very strong > moves systematically and it is very hard to fix that because it so > deeply rooted in an otherwise very efficient selective search process. Same for me and probably everyone working with RAVE :( > > Valkyria3.5.14-4cx is using exactly the same book as in Kanazawa and > Valkyria3.5.15-4cx probably just have a lot of bugfixes and changes to > the playouts. This does not mean that the program now plays stronger. > Sometimes changing the way it behaves in some tactical situations > makes it get into new kinds of fights that reveal more bugs... Also > balancing the ability to judge whether an invasion is possible or not > can be disturbed by adding "better" knowledge to it I believe. At least against Gomorra your modifications were helpful. But as the overall rating of 3.5.15 is below 3.5.14 on CGOS, you should throw your modifications away and give Gomorra a chance again :) Concerning the ability to judge whether an invasion is possible or not, I would expect an enhancement by adding "better" knowledge. From my understanding, a successful invasion most often requires the correct play of a rather long sequence. Here good knowledge is very helpful I think. So, I need an address if you need a cheese-bread :) - Lars > > Best > Magnus > > Quoting Lars Schäfers <[email protected]>: > > > Hi Magnus, > > > > kaesebrot is german for cheese-bread and was a test version of Gomorra. > > It has an adaptive opening book and makes a lot of computations after > > every lost game. Thats why it disappeared after every lost game for a > > while. So not a new program. > > Valkyria is constantly doing very well. Also at the olympiade in > > Kanazawa it got a good 5th rank with very limited hardware. I was really > > impressed. > > It appears to me that Gomorra likes the >2600 Elo Versions much more > > than the <2600 Elo Versions of Valkyria. I would give a cheese-bread for > > informations about the difference between Valkyria3.5.14-4cx and > > Valkyria3.5.15-4cx :) > > > > Best wishes, > > Lars > > > > On Tue, 2010-10-26 at 08:48 +0200, [email protected] wrote: > >> Hi all! > >> > >> The last days there has been some increased activity on CGOS 9x9. > >> MyGoFriend is back and shows it is really strong. I am playing with > >> Valkyria using the opening library developed for the Kanazawa > >> tournament. It is not so helpful yet against MyGoFriend as it plays > >> different line than what I was prepared for. > >> > >> Furthermore other mysterious programs has appeared such as Ghosper and > >> Kaesebrot. At least one of those I think is Mogo given the way it > >> plays the opening. They have not so high rankings yet, maybe because > >> of bugs that makes them lost against very weak programs. They are > >> doing very well against Valkyria and MyGofriend. > >> > >> Right now a strong version of ToGo is playing. So it would be fun to > >> the same kind of activity there was on 19x19 CGOS some time ago. > >> > >> I am also sure the programmers of those unknown programs read this and > >> it would be really nice to have a presentation of the programs here on > >> the list too :-) You do not have to tell all the secrets! > >> > >> Best > >> Magnus > >> _______________________________________________ > >> Computer-go mailing list > >> [email protected] > >> http://dvandva.org/cgi-bin/mailman/listinfo/computer-go > > > > _______________________________________________ > > Computer-go mailing list > > [email protected] > > http://dvandva.org/cgi-bin/mailman/listinfo/computer-go > > > > > _______________________________________________ > Computer-go mailing list > [email protected] > http://dvandva.org/cgi-bin/mailman/listinfo/computer-go _______________________________________________ Computer-go mailing list [email protected] http://dvandva.org/cgi-bin/mailman/listinfo/computer-go
