[Os-project-managers] Question about schemas

[Kipp Martin]

Hi Jun:

> Let's try to schedule a meeting for this week or next.
> My calendar this week is not as busy as it usually is. Feel free to
> suggest and I will block the time.
> It always get busier as it gets in to the week.

This week is really bad for me and next week is INFORMS. I won't be 
available until the week of October 22. However, I don't want to be a 
bottleneck, so if you and Gus want to go ahead and discuss schemas, feel 
free to schedule a meeting.

Cheers


> See my answers below.
>
>  > Hi guys,
>
>  > I have thought some more about the OSrL question of the last few
>  > exchanges. I do not have a solution, but there are other questions,
>  > about both OSrL and OSoL.
>
>
>  > 1. OSoL> We have <other> elements in <variables>, <constraints> and
>  > <objectives>, and there is a "type" attribute. What does that
>  > attribute refer to? I think it is ambiguous. Since the <var> array is
>  > optional, it seems that there could be an option something like
>  >
>  > <other name="relaxIntegrality" type="real" value="0.2"/>
>  >
>  > In this case, the "type" refers to the value of the option. But in
>  > other cases, such as
>  >
>  > <other name="stageInfo" type="integer" numberOfVar="2">
>  > <var idx="0" value="1"/>
>  > <var idx="1" value="2"/>
>  > </other>
>  >
>  > what does the "type" attribute of the <other> refer to? I assume it
>  > refers to the value inside the <var> element. Is that your reading
>  > also?
> Yes. If other is an array, as in the above example, it is then an
> integer array.
>
>  >Should there then be an attribute "varType" and "enumType" to
>  > allow for the possibility that an <other> option has both a global
>  > value and a number of <var> children, with possibly different types?
> No. The value should be either scalar or vector, but not both. I would
> assume~
>
>  > Also, why does each <var> element have an optional "name", and should
>  > there be a restriction that either a <var> array or an <enumeration>
>  > can be given, but not both? Or should the restriction also cover the
>  > "value" attribute, that is, there can be at most (exactly?) one of
>  > "value", <var>, <enumeration>? In the latter case, we could get by
>  > with the single "type" element, but we had better document this!!!
> I am not sure about the question exactly.
> I also peeked at the emails ahead in the queue. We probably can talk in
> the meeting some time this week or next.
>
>  > 2. The same question for the OSrL schema.
>  >
>  > 3. In addition, when we set up "type" for OSrL, I think we should have
>  > an enumeration of types. What should go into that enumeration?
>  >
>  > integer
>  > real (or double?)
>  > char
>  > string
>  > boolean (? needed? "true"/"false" are strings)
>  > ?
> R/B/I/S
> for real/binary/integer/string
>
>  > Cheers
>  >
>  > gus
>  > -------------------------------------------------------
>  >
>  > Horand I. Gassmann, Professor
>  >
>  > School of Business Administration, Dalhousie University
>  > 6100 University Avenue, PO Box 15000
>  > Halifax, Nova Scotia, Canada, B3H 4R2
>  > ph. (902) 494-1844
>  > fax (902) 494-1107
>  >
>  > http://myweb.dal.ca/gassmann/
>  >
>  > _______________________________________________
>  > Os-project-managers mailing list
>  > Os-project-managers at list.coin-or.org
>  > http://list.coin-or.org/mailman/listinfo/os-project-managers
>
>
> _______________________________________________
> Os-project-managers mailing list
> Os-project-managers at list.coin-or.org
> http://list.coin-or.org/mailman/listinfo/os-project-managers
>


-- 
Kipp Martin
Professor of Operations Research
and Computing Technology
Booth School of Business
University of Chicago
5807 South Woodlawn Avenue
Chicago, IL 60637
773-702-7456
kmartin at chicagobooth.edu
http://www.chicagobooth.edu/faculty/bio.aspx?person_id=12825325568
http://projects.coin-or.org/OS

Sent without Blackberry, Droid, iPhone, or any other
wireless device.
--