Re: Improving GEQO - Mailing list pgsql-hackers

From Jaime Casanova
Subject Re: Improving GEQO
Date
Msg-id CAJKUy5j9=Bo-cVmDsN6O-pRbff-3Q=bXLEbKB9+7OH317fp6ig@mail.gmail.com
Whole thread Raw
In response to Improving GEQO  ("alejandro" <boix@uclv.cu>)
List pgsql-hackers
On Wed, May 20, 2015 at 1:06 PM, alejandro <boix@uclv.cu> wrote:
> hello, my partner and me are working with the goal of improve the GEQO's
> performance, we tried with Ant Colony Optimization, but it does not improve,
> actually we are trying with a new variant of Genetic Algorithm, specifically
> Micro-GA. This algorithm finds a better solution than GEQO in less time,
> however the total query execution time is higher. The fitness is calculated
> by geqo_eval function. Does anybody know why this happens?
>

It will be difficult for anyone here to figure out anything without
the code to look at

--
Jaime Casanova         www.2ndQuadrant.com
Professional PostgreSQL: Soporte 24x7 y capacitación



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