Re: Cube extension kNN support

On Mon, Mar 31, 2014 at 10:01 PM, Sergey Konoplev <gray(dot)ru(at)gmail(dot)com> wrote:

> On Thu, Mar 27, 2014 at 3:26 PM, Sergey Konoplev <gray(dot)ru(at)gmail(dot)com>
> wrote:
> > On Sun, Sep 22, 2013 at 4:38 PM, Stas Kelvich <stas(dot)kelvich(at)gmail(dot)com>
> wrote:
> >> Here is the patch that introduces kNN search for cubes with euclidean,
> taxicab and chebyshev distances.
> >
> > What is the status of this patch?
>
> Referring to our private conversation with Alexander Korotkov, the
> patch is in WIP state currently, and, hopefully, will be ready by 9.5.
> I'm ready to actively participate in its testing on a real world
> production set of data.
>
> I'm not sure if it is doable at all, but are there any possibility to
> implement here, or, what would be just great, any ready/half ready
> solutions of a Hamming distance based kNN search?

Cube dealing with float8 numbers. There is another patch making it work
with other number types. But Hamming distance is for bit vectors, isn't it?

----
With best regards,
Alexander Korotkov.