[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: much faster XPath queries with XT
Dongwook,
Your demo is impressive (I didn't know your site).
Can you give me more details on the usage you are doing of XT ?
(would be interesting for our site 4xt.org... )
I am wondering, for instance, if it is involved in the search engine
itself or if it is only used to present the results.
Thanks
Eric
Dongwook Shin wrote:
>
> Eric:
>
> I also tested Xalan Xpath on my Pentium II 448Mhz with 256MB RAM.
> The query took around 3 sec in DOM mode. I think the inefficiency
> of Xalan XPath arises from its brute force execution plan. It starts
> from the top-level step, gathering all the context nodes and switching
> to the next level and so on. It is extremely inefficient when you use
> "//" since it tries to collect all the descendant nodes as possible
> context nodes of the next step.
>
> I don't know how much XT is fast. But you can do benchmarking
> with my XRS system that has shakespare colleciton as the Web
> demonstration at: http://dlb2.nlm.nih.gov/~dwshin/xrs.html.
>
> Cheers,
> Dongwook
>
> Eric van der Vlist wrote:
>
> > Hi Lars,
> >
> > It looks amazing.
> >
> > Can you give us more details, and, to begin with, are you running XT in
> > DOM mode ?
> >
> > Thanks
> >
> > Eric
>
> --
> Dongwook Shin
> Visiting Scholar
> Lister Hill National Center for Biomedical Communications
> National Library of Medicine,
> 8600 Rockville Pike Bethesda 20894, MD
> E-mail: dwshin@nlm.nih.gov
> Tel: (301) 435-3257
> FAX: (301) 480-3035
> URL: http://dlb2.nlm.nih.gov/~dwshin
--
------------------------------------------------------------------------
Eric van der Vlist Dyomedea http://dyomedea.com
http://xmlfr.org http://4xt.org http://ducotede.com
------------------------------------------------------------------------