[Seavox] To business....

[John Graybeal]

I think Bryan's changes may address a lot of what I was thinking about.

Part of the reason I want to show the definitions to MBARI scientists is to get their buy-in to what *we* (at MMI) are doing, and hopefully to what you in Europe are doing, and I'm happy to hear of the scientific basis (which I expected you would have).  That's all good.

Here's my thought exercise.  The usefulness of these keywords will depend a lot on the expected technique for selecting them.  If it's always a domain scientist, exercising judgment about which keywords to apply, then the science rules are the critical driver (but consistency becomes a potential problem, since judgment is involved).  If the keywords are selected by simple application of the data values, then the scientific definitions are no longer applicable, and only the data value guidelines are directive (but the scientific definitions are of interest also). 

Of course, in that case -- calculating keywords based on max-min range of the values -- we're back to the question of why you wouldn't just used numeric queries. "Return data sets where dataMax > myDesiredMin or dataMin < myDesiredMax" seems a lot easier (and more precise) to me than  "Return data sets where verticalKeywords include any of verticalKeywordList."

So which part of the definition you emphasize should depend on intended purpose, but I think the intended application environment is hugely diverse. (It's basically all oceanographic users of ISO 19115, right?)  So at best you'll get an approximate fit,  no matter which part you emphasize.  So I'm OK with either point of emphasis. 

John


At 1:46 PM +0000 11/1/06, Roy Lowry wrote:
>John/Karen,
>
>What I'm trying to do with the definitions is to try and lead hard data (ie actual measurement depths) to term conversions towards consistency.  How about if I use a scientific definition and then give the associated physical distance specification as a 'guideline'.  I'm guessing Bryan's proposed 'pattern' for the atmospheric domain might be along these lines.  Would you be happy with that?
>
>I have involved some ocean scientists at POL and NOCS plus Bryan and other atmospheric scientists at RAL in the initial discussions on this vocabulary, but will test out the result on a few more.
>
>Cheers, Roy.
>
>>>> John Graybeal <graybeal at mbari.org> 10/31/06 4:31 AM >>>
>Some points:
>
>- Is it of any concern that Wikipedia cites differing opinions about the names of deeper zones?  (Ignoring the obvious possibility that Wikipedia is wrong, it seems likely that some might disagree -- any concern about that?)
>- Wikipedia spells it hadopelagic.  Probably some American thing.
>- The lack of "about" in the definitions, as in "about 1000 meters", concerned me -- Wikipedia rings more true in that respect, though still with flaws. I guess the application of the definition is all in how the keywords will be used, and why I have such trouble with keywords in the first place. So take it for what it's worth.
>- I agree with Karen's comments on water column boundary layer.
>
>Any reason we shouldn't run these by a bunch of non-data-centric scientists?  They should all agree too, right?
>
>I thought the ASLO vocabulary had some overlapping terms, the benthic boundary layer in particular...?
>
>John
>
>At 10:00 AM +0000 10/30/06, Roy Lowry wrote:
>>Dear All,
>>
>>Please find attached a vocabulary developed from one of the EDIOS local vocabularies to provide terms for describing dataset vertical coverages in discovery metadata.  I would foresee these terms being used as ISO19115 keywords.  Please let me have any comments on content, terms or definitions.  I would also be interested if anyone knows of other vocabularies out there fulfilling this function so I can check them out for ease of interoperability.
>>
>>Cheers, Roy.
>>
>>
>>
>>
>>
>>Attachment converted: Macintosh HD:SeaDataNet_Vocab_L131.xls (XLS4/«IC») (0116226F)
>>_______________________________________________
> >Seavox mailing list
>>Seavox at mailman.nerc-liv.ac.uk
>>http://mailman.nerc-liv.ac.uk/mailman/listinfo/seavox
>
>
>--
>----------
>John Graybeal   <mailto:graybeal at mbari.org>  -- 831-775-1956
>Monterey Bay Aquarium Research Institute
>Marine Metadata Initiative: http://marinemetadata.org   ||  Shore Side Data System: http://www.mbari.org/ssds
>
>
>_______________________________________________
>Seavox mailing list
>Seavox at mailman.nerc-liv.ac.uk
>http://mailman.nerc-liv.ac.uk/mailman/listinfo/seavox


-- 
----------
John Graybeal   <mailto:graybeal at mbari.org>  -- 831-775-1956
Monterey Bay Aquarium Research Institute
Marine Metadata Initiative: http://marinemetadata.org   ||  Shore Side Data System: http://www.mbari.org/ssds