Re: [Bug-gnubg] "Joseph-ID" in benchmark db

[Mark Higgins]

Thx all!

One more benchmark database question, on format: I'm assuming:

* The rollout probabilities are in eg contact-train-data, not contact.bm (not 
sure exactly what that is).
* The format is <ID> <prob of any win> <prob of any gammon win> <prob of any 
gammon loss> <prob of bg win> <prob of bg loss>.
* Probabilities assume that the player is holding the dice, about to roll.

Is that correct?



On Feb 9, 2012, at 5:32 PM, Joseph Heled wrote:

> On 9 February 2012 20:33, Michael Petch <address@hidden> wrote:
>> On 09/02/2012 12:01 AM, Mark Higgins wrote:
>>> Can anyone point me to a function to convert the keys in the benchmark dbs 
>>> to a board layout pls?
>>> 
>>> They don't look like 14-char position IDs, and checking this list archive I 
>>> see them occasionally referred to as Joseph-ID.
>>> 
>> 
>> Thanks to Philippe, the code I think you are looking for is now in
>> gnubg.c. Philippe committed a change last month that allows the "set
>> board" command to take a gnubg-nn ID (Which I think is what you are
>> referring to) and allow it to be used to setup a position in GNUBG. If
>> you want this feature I can build a windows release tomorrow. The
>> excerpt from the source code that does the work is here:
> 
> When accepting an id from user, you do want to test that pch[XXX] -
> 'A' is indeed 4 bits, i.e.  'A' <= pch[XXX] <= 'A' + 15
> 
> -Joseph
> 
>> 
>>    if( strlen(pch) == 20) { /* gnubg-nn position string */
>>        static oldpositionkey key;
>> 
>>        for(i = 0; i < 10; ++i) {
>>           key.auch[i] = ((pch[2*i+0] - 'A') << 4) +  (pch[2*i+1] - 'A');
>>        }
>> 
>>        oldPositionFromKey( an, &key);
>> 
>>        return 0;
>>    }
>> 
>> 
>> The above is a snippet from GNUBG.C in the function
>> extern int ParsePosition( TanBoard an, char **ppch, char *pchDesc )
>> which was added by Philippe.
>> 
>> --
>> Michael Petch
>> CApp::Sysware Consulting Ltd.
>> OpenPGP FingerPrint=D81C 6A0D 987E 7DA5 3219 6715 466A 2ACE 5CAE 3304
>> 
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