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Outpost evaluation
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Robert Hyatt



Joined: 27 Feb 2006
Posts: 15816
Location: Birmingham, AL
PostPost subject: Re: Outpost evaluation    Posted: Sat Apr 14, 2012 4:16 am Reply to topic Reply with quote
lucasart wrote:
Rebel wrote:
I have a parameter for Knight outposts (I don't do Bishop outpost) and my notes state:

[Strong Squares = 125] 0=46.0% | 100=50.0% | 200=48.2% | 150=48.7%

Meaning, when I remove it (value 0) it gives a drop of 4% (28 elo).

Perhaps your bonus is too high?

Seems you're right:
1/ bishop outpost are probably not a great idea. knight only seems to be better.
2/ my values were too high. As a human player, I tend to think that an outposted enemy knight into my territory, that I can't remove by pawns or exchange is a real menace, sometimes worth a pawn perhaps (maybe even the exchange in certain situations). But that's essentially my "risk aversion": I am worried to make calculation mistakes with this constant menace, so I prefer to pay the price of a pawn to get rid of it. A computer on the other hand makes much less calculation mistakes, so it should have a much smaller risk aversion, hence the smaller value Very Happy


Bishop outpost can work. We use one in Crafty, and removing it hurts. But like all eval terms, it requires tuning.
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Display posts from previous:   
Subject Author Date/Time
Outpost evaluation Lucas Braesch Sun Mar 18, 2012 10:42 am
      Re: Outpost evaluation Ed Schroder Sun Mar 18, 2012 12:15 pm
            Re: Outpost evaluation Lucas Braesch Sun Mar 18, 2012 1:47 pm
                  Re: Outpost evaluation Matthew R. Brades Sun Mar 18, 2012 4:27 pm
                        Re: Outpost evaluation John Merlino Sun Mar 18, 2012 4:44 pm
                              Re: Outpost evaluation Matthew R. Brades Sun Mar 18, 2012 5:54 pm
                                    Re: Outpost evaluation Charles Roberson Sun Mar 18, 2012 8:07 pm
                  Re: Outpost evaluation Pio Korinth Sun Mar 18, 2012 7:38 pm
                        Re: Outpost evaluation Michael Hoffmann Sun Mar 18, 2012 8:35 pm
                              Re: Outpost evaluation Pio Korinth Sun Mar 18, 2012 9:30 pm
                                    Re: Outpost evaluation Pawel Koziol Sun Mar 18, 2012 10:29 pm
                  Re: Outpost evaluation Ed Schroder Mon Mar 19, 2012 12:20 pm
                        Re: Outpost evaluation Robert Purves Tue Mar 20, 2012 7:14 am
                              Re: Outpost evaluation Gabriel LEPERLIER Fri Apr 13, 2012 8:00 pm
                                    Re: Outpost evaluation Ferdinand Mosca Sat Apr 14, 2012 1:34 am
                                          Re: Outpost evaluation Gabriel LEPERLIER Sat Apr 14, 2012 7:24 am
                                          Re: Outpost evaluation Lucas Braesch Sat Apr 14, 2012 2:28 pm
                                                Re: Outpost evaluation Ferdinand Mosca Sat Apr 14, 2012 4:34 pm
                  Re: Outpost evaluation Robert Hyatt Sat Apr 14, 2012 4:16 am
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