[OSM-dev] NameFinder - problems building index

[Nick Black]

On Jan 21, 2008 5:57 PM, David Earl <david at frankieandshadow.com> wrote:
> On 21/01/2008 17:28, Nick Black wrote:
> > Ok, the problem was the namefinder.sql - I've checked in an updated version.
>
> Yes, sorry. You got to it before I did. That was a side effect of the
> change to API 0.5.
>
> > If its taking five days to run on planet right now, its not a viable
> > option.  Have you (David) or anyone looked at running it from a diffed
> > planet?
>
> Yes - I think I said previously, I have a design and I am about half way
> through coding it.
>
> The problem is that it isn't enough to just process a diff through the
> existing algorithm - for example, if a way is deleted with some name,
> that may require a node or way which is nearby which hasn't been changed
> so doesn't appear in the diff to be "revealed" in the name finder.
> Example:  "Parkside School" in Cambridge is represented by both by a way
> (area) and a node, and there is also a Parkside School in Chester, say.
> The name finder search has two entries, one for the Cambridge name,
> which happens to be derived from the node, and one for the Chester. The
> node is removed. The name finder has to replace this with the area from
> Cambridge, so has to have reference to the whole data set in order to
> determine this because the area doesn't appear in the diff. Similarly,
> if the diff adds a name, it may not want to be added to the namefinder
> search as it may be very close to another entry with the same name.

Ok, in the meantime, could I take a look at a sample of your apache
logs to see what queries are coming from OSM?



>
> David
>
>



-- 
Nick Black
--------------------------------
http://www.blacksworld.net