Author: Stuart Cracraft
Date: 13:43:46 07/18/04
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On July 18, 2004 at 02:40:03, Rémi Coulom wrote: >On July 17, 2004 at 23:44:55, Stuart Cracraft wrote: > >>www.cs.ualberta.ca/~jonathan/Papers/Papers/td.ps > >If you are interested in papers on TDLeaf(lambda) from someone other than Baxter >et al, you should read those by Beal and Smith. They invented the technique >first, and applied it to chess. I find their papers to be more convincing than >those by Baxter. They used self-play instead of online play, and played many >more games. They managed to obtain weights that look much better. > >Two of their papers were published in the ICGA journal. They have papers in >_Information Science_ (122, 2000, 3-21) and _Theoretical Computer Science_ (252 >(2001) 105-119), also. Unfortunately, I do not think that any of those papers is >available online for free. The paper in _Information Science_ is particularly >intersting because it introduces a technique called "temporal coherence" to >speed-up learning by using an individual adapative learning rate for every >weight. > >Another interesting reference that is available online is this technical report: >http://www.cs.bris.ac.uk/Publications/pub_info.jsp?id=2000100 > >Rémi Remi -- I'm well aware of Beal's work pre-dating it and read it quite a while ago. However, it is Baxter et al who solidified and expanded. Don would likely agree with this. It was in a far more limited domain of piece-value auto-tuning that Beal and colleagues operated and at base positions rather than frontier nodes, etc. as I recall. And if you want to play the game of go-back, please go back to Art Samuel whose work, I feel, anticipated Sutton's, Tesauro's, Baxter's, and everybody else's in this area. I was merely pointing out Shaffer's solid backing of TDleaf after having spoke of it downwardly before -- he even alludes to that point in the paper, so it's a big admission and step forward for a solid researcher and I recommend that paper. Manual tuning is for the birds, Stuart
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