Hi,
In the last version of draft Multi-Cost ALTO, Section deals with the
representation of 1 Cost Type taking multiple values. A related use
case is given in section ยง5.3. See
http://tools.ietf.org/html/draft-randriamasy-alto-multi-cost-05.txt
An example is a proposed Cost Type called "Path Occupation Cost" (POC)
that takes different values at different times.
The cost values of POC are represented with a JSONArray. The draft
proposes to qualify such a representation with the "dynamic mode".
The idea is to use this value table for planning purposes, to provide
guidance on which time periods are more suitable to operate data
transfers. An analogy can be found with train plan costs, classified wrt
trafic intensities (rush hours, vacation departures, ...) and
represented with e.g. colors or scalar values. These values can be used
to plan the travel period and ticket purchase, wrt the purpose /
emergency of the trip.
The class/cost values in the "dynamic mode" aim to be incentives, to
optimize the network occupation, more than trying to be some statistical
representation, although they stem from empirical knowledge.
Such Costs MUST be representable with single values, in either
"numerical" or "ordinal" modes. Either if only a "static" value is
needed of provided. Or when rapidly (down to couple of minutes) changing
values are available via new ALTO queries.
Are there any objections, suggestions, thoughts?
Thanks
Sabine
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Sabine RANDRIAMASY
Alcatel-Lucent Bell Labs France
Centre de Villarceau
Route de Villejust - 91620 NOZAY - FRANCE
E-MAIL : [email protected]
TEL: +33 (0)1 30 77 27 45
(On Net) 2 103 27 45
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