Hi BW, On Jan 24, 2012, at 6:32 PM, BW wrote:
> Where is the centralized repository? CAS? It depends: CAS can act as a centralized repository, or can expose distributed repositories, it really depends on the specific architectural configuration. Cheers, Chris > > BW > > On Jan 15, 2012, at 6:16 PM, Bruce Barkstrom <[email protected]> wrote: > >> If you're working Earth sciences, there are at least four >> different dialects for the terms: >> 1. Global Change Master Directory >> 2. ESDIS and derivatives >> 3. ISO 19115-2 and other, related geospatial metadata standards >> 4. CF Profile of Unidata (probably the most even handed of the lot >> - albeit with a fair influence from the general circulation modeling >> community - and therefore somewhat deficient with respect to various >> observations) >> >> There are serious divergences in the vocabularies (GCMD and >> CF Profile have some parameter names with each dialect having >> about 1,000 terms and only about five to ten exact matches >> when all the terms are cast into upper case. The JPSS terms >> for the upcoming operational system may have more than 100,000 >> individual items, but their vocabulary probably doesn't match up >> exactly with the World Meteorological Organization's terms, etc. >> >> In short, there's exactly the mishmash one might expect from trying >> to find the "common language" of isolated Amazonian tribes who >> suddenly encounter each other on the streets of Rio. >> >> Best of luck trying to get to some commonality in describing either >> data formats or time-space sampling patterns. >> >> Bruce B. >> >> >> On Sun, Jan 15, 2012 at 3:12 PM, Mattmann, Chris A (388J) >> <[email protected]> wrote: >>> On Jan 15, 2012, at 9:05 AM, Crichton, Daniel J (4231) wrote: >>> >>>> Building a solid data architecture requires someone with extensive >>>> experience. The planetary science data architecture, for example, is an >>>> international effort with many sub-disciplines. Capturing data compliant >>>> to that data architecture requires defining a solid, consensus-based model >>>> and that takes time and it is a community effort. Other efforts aren't as >>>> rigorous, so I think it depends on the application and use of OODT. In >>>> some cases, it may be a simple model. >>> >>> +1, agreed. >>> >>> Cheers, >>> Chris >>> >>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>> Chris Mattmann, Ph.D. >>> Senior Computer Scientist >>> NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA >>> Office: 171-266B, Mailstop: 171-246 >>> Email: [email protected] >>> WWW: http://sunset.usc.edu/~mattmann/ >>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>> Adjunct Assistant Professor, Computer Science Department >>> University of Southern California, Los Angeles, CA 90089 USA >>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Chris Mattmann, Ph.D. Senior Computer Scientist NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA Office: 171-266B, Mailstop: 171-246 Email: [email protected] WWW: http://sunset.usc.edu/~mattmann/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Adjunct Assistant Professor, Computer Science Department University of Southern California, Los Angeles, CA 90089 USA ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
