[Computer-go] [ANN] Michi - 15x15 ~6k KGS in 540 lines of Python code

Petr Baudis pasky at ucw.cz
Wed Mar 25 11:23:55 PDT 2015

On Wed, Mar 25, 2015 at 07:14:39PM +0100, Kahn Jonas wrote:
> >>Based on my
> >>observations, the limiting factor is time - Python is sloooow and
> >>a faster language with the exact same algorithm should be able to speed
> >>this up at least 5x, which should mean at least two ranks level-up.
> >
> >Maybe a first step would be using numpy arrays for the board and
> >patterns. They are quite fast, so the pattern matching should go fast.
> >It won't be any help for the really sequential loops, however.
> On further thought, I think the pattern matching for strings is already
> fast, so maybe nothing to gain. There is no real operation ON the arrays
> in the programm…

To speed up the Python program, first thing would be to add a list of
chains with list of liberties - right now, chains get floodfilled and
regexed again and again and it's a huge time sink.  Maybe that could
speed things up by 25-100%, but I just didn't feel like doing that
myself anymore. :-)

				Petr Baudis
	If you do not work on an important problem, it's unlikely
	you'll do important work.  -- R. Hamming

More information about the Computer-go mailing list