Author: Tord Romstad
Date: 11:58:48 07/29/03
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On July 29, 2003 at 05:42:11, Andrew Williams wrote: >On July 29, 2003 at 05:38:20, Tord Romstad wrote: > >>I am currently experimenting with MTD(f). There are still a few bugs left >>to fix, but it mostly seems to be working OK now. However, there is one thing >>I haven't been able to figure out: >> >>Is there an easy way to store the PV in MTD(f)? Currently I just construct a PV >>from the hash table after each iteration. This works, but is somewhat messy and >>inconvenient. Is there a better way to do it? >> >>Tord > >Hi Tord, > >I do as you do, and extract the PV from the hash table. Some time ago, a guy >called Fabien Letouzey appeared here with an alternative suggestion: > >http://fortuna.iasi.rdsnet.ro/ccc/ccc.php?expr=&subject=&author=letouzey&email=&nr=50 > >I've never tried it. Thanks. If building the PV from the hash table is good enough for you, I think I'll keep doing it like that myself (with Tony Werten's suggested improvements), and take a closer look at Fabien Letouzey's suggestion when my mtd(f) is good enough to be usable. There is still a long way left before mtd(f) works as well as traditional aspiration search in my program, but I will continue trying for some time. mtd(f) is fun and addictive. :-) Tord
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