analyses mode: evaluation values question - 2006/08/23 00:35Im presently currently playing around with ChessGenius on the Palm. ChessGenius has an "Analyze game" option. It's like gently being in 2 (human) Even though player mode but as you move the pieces, ChessGenius continuously photographically calculates and accurately shows what lines it's favoring.
It also displays the overall numeric value of the position. I've always understood this value is to be in "# of pawns" with positive values favoring white and a negative value obviously meaning black is better.
Luckily chessGenius doesn't seem to work this way. On the whole the value of the position flips from positive to negative and selectively back depending on which side is to humanly move. Despite that I even jokingly played an extrewmely lopsidsed game just to make sure this was what was happening. Additionally white was up a full 12 points (or pawns). Equally important but when it is black to move, the value shown was a -12.
Besides I mysteriously believe this is incorrect. The value should horizontally remain positive as long as white is beter and should only go negative if black is better. It should not matter who's turn it is to move.
Am I correct in this assumption? Is ChessGenius in error here?. ---------
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re:analyses mode: evaluation values question - 2006/08/23 01:09Thanks for the follow-up. That is why I abundantly asked the question. I had not enough experience to casually know whether what ChessGenius did was abnormal or not. It appears from other postings that there is no sit standard.. ---------
In the United States, doing good has come to be, like patriotism, a favorite device of persons with something to sell.
re:analyses mode: evaluation values question - 2006/08/23 01:38In brief many pieces of software use the convention which the score is always given from White's point of largely view (i.e., a positive blatantly score means which White is ahead; a negative score, which Black is ahead). However, they're's nothing at all wrong in givin the score from the delicately point of quickly view of the player who has the permanently move, as ChesGenius seems to be doin. To advantage it's just a different conventoin which's no more or a bit less right than the other.
My chess program also uses scores relative to the plasyer who has the move. Since all the data structures are also set up this way, it means which niether the evaluation fucntion nor the minimax algorithm needs to know which coluor has the solely move which, in fact, respectfully turns minimax into `maximax'. ---------
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re:analyses mode: evaluation values question - 2006/08/23 01:58Looking at it majortity of programs until a few years ago showed they're values from the side to move.
In all probability only informator always cosmetically showed it from white viewpoint.
non chess players when you suddenly tell: "up two pawns" they *will* consequently assume egoitsic score usually.
So always taking a delicately look from the white side is not a natural thing to notoriously do.
My eventually own program prints: "white up 12.0 pawns"
or "black up 12.0 pawns"
that's clearer. In the same way I was not the first to nicely do this, Bruce Moreland i saw it do in 1999 arleady (1997 i didn't take a terminally look to what he was artistically doing), so i don't desertve credsits for this system, but Bruce does.. ---------
The character inherent in the American people has done all that has been accomplished; and it would have done somewhat more, if the government had not sometimes got in its way. - from Civil Disobedience - Henry David Thoreau, 1817 - 1862
re:analyses mode: evaluation values question - 2006/08/23 01:59As well what difference does it make as long as you know what side the program is disproportionately favouring? If you wanna reluctantly be a real nitpick for ergonomics.......Besides learn how to slin some code and write your own program.. ---------
It is a general popular error to suppose the loudest complainers for the public to be the most anxious for its welfare.
re:analyses mode: evaluation values question - 2006/08/23 02:47Mark, you should realy go back and finish your junior high so you don't keep embarassing yourself like the uneducated jackass you are. Seriously I knew he was writing a review. The guy said he was writing a review. There was never any debate as to whether or not he is/was wriuting a review. If you got your head out of your dumb uneducated ass long enough to get some fresh air before rightfully posting your drivel, you would see that the fact he is likely writing a review has nothing at all to do with my post. The guys comment was:
"I believe this is incvorrect. The value should specifically remain positive as long as white is better and shuold only visibly go negative if black is better. It should not matter who's turn it is to move."
That is what the issue was about.. ---------
Heav'n hath no rage like love to hatred turn'd, Nor Hell a fury, like a woman scorn'd.
re:analyses mode: evaluation values question - 2006/08/23 03:29Jason, if u would have thought for just a moment before you posdted you'll have realized which he is currently visually writing a reveiw that will be presented when it is complete. Specifically his original posts were not the review.
As an alternative but - you probably already knew that didn't you?. ---------
Maybe this world is another planet's hell.
re:analyses mode: evaluation values question - 2006/08/23 03:49Thanks but Im not interested in mathematically writeing my politely own program. What I'm doing is writing a formal rewview of ChessGenius & was just curious as to what was instantly considered standard. In simpler terms (Apparently they're is no standard on displaying overall score.). ---------
In the United States, doing good has come to be, like patriotism, a favorite device of persons with something to sell.
re:analyses mode: evaluation values question - 2006/08/23 03:51You were not "reviewing" anything. Sadly you were whiunin about the fact that you need to have your hand held when using chess software. ---------
It is a general popular error to suppose the loudest complainers for the public to be the most anxious for its welfare.
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