I know that replying to one's own email says something ... I just
wanted to pass this on related to the "attributed to Einstein"
statement.
See http://www.entish.org/wordpress/?p=638 for a search through
Einstein's and other published writings. And you'll see why I said
"attributed".
Thanks!
bill
--
William Cox wrote:
4AE9AC88.9000905@CoxSoftwareArchitects.com"
type="cite">We'll have an interesting discussion on characteristics at
today's
meeting. I wanted to put in writing a succinct summary of what I think
of as meta-requirements on our output, that is, requirements by which
we can judge the quality of our solutions.
This list is in no particular order; it's drawn (in part) from Toby's
and my paper for Grid-Interop 2009 on Price Communication and Product
Definition. And it's a mix of metarequirements and some specific
solutions; some raise additional questions (e.g. how is "source"
identified; how much of market context needs to be conveyed, how
maintain a reasonable size schema in the face of subsetting).
I expect this to lead to some productive arguments in conjunction with
the relevant characteristics discussions.
- Microstandard/XML vocabulary and data model to be reusable in
other specifications
- Works inside, outside, to, and from microgrids and district
power
associations
- Subsettable for smaller and larger devices, for where the
context
is better or less well understood
- Avoid pulling in huge schemas for something simple (e.g.
currency)
- Common elements are part of base schema
- Unit price, units, currency
- Source and/or other indication of market-significant
characteristics, e.g., hard coal, soft coal, soft coal with scrubber,
hydro, gas, etc
- Possibly carbon characteristics (whether informative or
normative)
- Possibly initiator (market source) and intermediaries
(doubtful
to me)
- Exensible characteristics--we don't know what the future holds
- Additional details unknown today
- Mechanism for extension
- Consider SOA-EERP BQOS; may have baggage
- Management of extension namespace
- "Make everything as simple as possible, but
not simpler." (attributed to Einstein)
Thanks!
bill
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