Author: Jeremiah Penery
Date: 16:20:14 01/23/00
Go up one level in this thread
On January 23, 2000 at 15:42:32, Tom Kerrigan wrote: >On January 23, 2000 at 14:50:36, Jeremiah Penery wrote: > >>My question is "Why hasn't someone _else_ done it?". >>It sounds pretty much like DB just had a bunch more knowledge, and extended >>more/differently than PC programs. If it would be a good program this way, why >>hasn't someone else implemented all their knowledge and search techniques (as >>much as they can figure out) already? Probably because it would perform >>pathetically on the PC. > >No, that's not the reason. The reason is that nobody knows how DB works. It's >not like DB's evaluation function is public domain. If it was, somebody would >have already made DB for a PC and we wouldn't have these arguments. > >If you can give me an exact description of DB's eval function, I will pay you >$100 (possibly more), and I will release a program using that function in less >than a month. We don't have an exact description, but we do know a lot of what it does. Why aren't _any_ of the programs now doing certain things that DB _was_ doing? Because they're prohibitively expensive to do on a PC. The added knowledge is not worth the tradeoff in speed. >>uses a selective search, which DB does not do. If you add all the extra DB >>knowledge, the program will be even slower. With no forward pruning/selective >>search, the depth will be even less. With all the extensions DB did, the depth >>would be still less. > >I suspect that CS Tal's evaluation function does more work than DB's. I actually >have evidence. So, what is the evidence? > And so far, nobody's been able to prove me wrong. Also, there's >no reason why you can't use the DB eval function with a search function that's >more appropriate for a PC. Then it wouldn't quite be DB, now would it? >>But you're asking why Hsu doesn't do it? Here's what I think would happen: >>It would probably sell a bunch. So what? It won't perform very well, and the >>anti-DB stuff will be even worse. A lot of people won't really understand the >>speed difference between this and the real DB; they will call DB weak and >>stupid. People who already think DB wasn't very good will have their opinion >>reinforced. It's pretty much a no-win situation for Hsu. Besides the money, >>which he probably doesn't need (or may not care about, if you consider the >>above), there is absolutely no motivation for him to do something like this. > >People are already calling DB weak and stupid left and right. Most of the fire True. I think releasing it for the PC can only make these accusations worse. >that he's coming under is simply because he isn't releasing DB >information/games. If he actually releases a program, I suspect that people will >gain much more respect for him. Right now, everybody is bitter because all they >have access to is hype. It sounds to me as if you're one of these bitter people. :|
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