| From: | boix <boix(at)uclv(dot)cu> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Improving GEQO |
| Date: | 2015-05-27 20:06:26 |
| Message-ID: | 556623C2.7080704@uclv.cu |
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| Lists: | pgsql-hackers |
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?
We attach the patch made with the changes in postgresql-9.2.0.
Regards.
| Attachment | Content-Type | Size |
|---|---|---|
| microg.patch | text/x-patch | 13.2 KB |
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