The challenge is for the ontology not to get in the way of the
processing. My experience has been
(1) inserting any ontology slows things way down unless, by ontology,
you mean a mapping of one schema to another (which I don't think you
mean) or a mapping of an upper level ontology to a domain ontology
(which maybe you do mean);
(2) managing the level of abstraction is exceedingly important if you
want users to use it. All due respect to OGC, I find their ontologies
impenetrable to all but the most hard core computational types (which
excludes most all people working in hazards);
(3) it's easy to say cloud but the devil is in the enormous details
needed to sort out the metaphor. Once you sort out the details, it's no
longer a cloud.
(2), on creating layers of ontologies, which reduce the abstraction, is
a good geography question.
Renee
Eric Wolf wrote:
FYI: http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4782703
Sort of antithesis to WPS.
What I'm playing with is creating a distributed architecture for web
mapping that, on the back end, handles petabytes of data but allows
for insanely high traffic bursts. WMS and WPS don't quite hack it. So,
you push the basemap rendering back further away from the user and any
analysis and computation closer towards the user.
Google's solved some of these issues but they only have one static
basemap with a very limited set of features. They also are able to
rely on essentially infinite processing power. They also don't provide
for any real analysis (yet).
What I'm trying to piece together is a system that lets privileged
users combine layers and design and generate a tile cache rapidly in
order to support bursts in traffic. For example, the USGS
earthquake.usgs.gov site typically sees 250K hits per second
immediately following an earthquake event. Currently, maps on that
site are generated as static images that get pushed out to Akamai.
I definitely have enough for an MS - especially in CompSci. But coming
up with a Geography question is much tougher.
-Eric
-=--=---=----=----=---=--=-=--=---=----=---=--=-=-
Eric B. Wolf 720-209-6818
USGS Geographer
Center of Excellence in GIScience
PhD Student
CU-Boulder - Geography
On Wed, Mar 11, 2009 at 3:07 PM, Raj Singh <[email protected]> wrote:
Web Processing Service
http://www.opengeospatial.org/standards/wps
---
Raj
On Mar 11, at 12:58 PM, Sean Gillies wrote:
"OGC Web Pipe Service"
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