Re: [HACKERS] GEQO: ERX

2009-05-20 Thread Tobias Zahn
do you think that compressed annealing might be the better approach? TIA and best regards, Tobias Zahn Adriano Lange schrieb: Robert Haas escreveu: On Wed, May 13, 2009 at 4:14 PM, Tobias Zahn tobias-z...@arcor.de wrote: Hello, thank you for posting the paper, it was quite interesting to read

Re: [HACKERS] GEQO: ERX

2009-05-13 Thread Tobias Zahn
of a given join order. Therefore, it would only be necessary to write an algorithm witch chooses the right input for the cost function. I would be interested in your opinion. Regards, Tobias Robert Haas schrieb: On Sat, May 2, 2009 at 11:37 AM, Tom Lane t...@sss.pgh.pa.us wrote: Tobias Zahn

Re: [HACKERS] GEQO: ERX

2009-05-02 Thread Tobias Zahn
Hello again, I didn't not get any response to my initial message below. Now I am wondering if nobody is into the optimizer or if my question was just too stupid. Could you please give me some clues? Your help would really be appreciated. Regards, Tobias Hello, I was digging through the

[HACKERS] GEQO: ERX

2009-04-20 Thread Tobias Zahn
Hello, I was digging through the optimizer code and have a question regarding the edge recombination crossover (ERX) of the GEQO. It might be completely stupid and therefore I apologize for this in advance. As far as I understand it, the idea of the ERX is the minimization of edge failures. When