[DDI-ADG] time spreadsheet
Mary Vardigan
maryv at icpsr.umich.edu
Thu Aug 25 13:50:20 EDT 2005
Sanda provides the following additional questions and then some responses
below.
* In J's spreadsheet, how do we use reporting date and what does it mean?
* Where do frequency and time method fit in or what became of them?
Perhaps in our call tomorrow we can start from Kate's and Sanda's questions.
Mary
At 05:01 PM 8/22/2005, Katherine McNeill-Harman wrote:
>Couple of comments about the new version of the date spreadsheet:
>
>- Wendy's explanation of calendar makes sense and I think we should keep
>it in. However, in ultimate implementation I'm we might also consider it
>as an attribute of the other dates (i.e. if the original date was
>according to the Jewish calendar, not sure if it'd then be translated into
>Gregorian calendar and be repeated).
>
>- R.e. security, it seems like the main differences between that and
>embargo are 1) it can apply at the variable level and 2) it can apply
>differently to different groups. And it seems like it has two parts, both
>a release date and the category of users to which it applies (I guess the
>latter is an attribute). So it seems like we should keep it, although I
>wonder if it could be combined into the same element as the embargo, maybe
>something like access restrictions, that could contain both dates and
>categories of people?
Agreed that these should be combined. Attributes can indicate reason for
limited access, category of user it affects, and date stamp.
>- In this spreadsheet, should we have it written down explicitly at the
>top that all dates will be in ISO format? Just to have it officially
>written somewhere.
Yes.
>- I'm noticing that none of the TemporalCoverage or AdministrativeDates
>dates are required. Is there any that we feel like we could require, e.g.
>reference? Conversely, they are all listed as potentially going up to
>N. Is this also what we want? Some items could repeat if they can apply
>to different variables or values (e.g. ReferenceDate), but some other
>things I think would only happen one time per file (e.g. publication date).
What we should require in 3.0 is an important issue that perhaps the SRG
will give some guidance on.
>- PublicationDate appears both in TemporalCoverage and
>AdministrativeDates. Was this repeat deliberate? If not, I guess we
>could keep it in AdministrativeDates.
This seems like an administrative date.
>- I'm not entirely clear on a couple of things about DateType. First, is
>it a sub-element or attribute of those other dates? Also, I see the
>attempt to distinguish single dates vs. date ranges, but I'm a little
>confused as to how it works. If there's a single date they fill out only
>Date? But then Start Group seems to be a required element, so they'd also
>have to put the single date as the start/end date?
>
>- Small notes on frequency: 1) I imagine we'd want Occurrence to be
>0..1. And do we need to we say in the note that it's a reusable class on
>its own (i.e. that it can be applied at the variable level)?
>
>Kate
>
>At 03:03 PM 8/17/2005 -0500, Wendy Thomas wrote:
>>Don't know...lets see how it shakes out. Does it make sense to have all
>>the dates in one place except for the geography? I guess I thought that
>>the date in Geography was a reference to the date(s).
>>
>>wendy
>>
>>
>>On Wed, 17 Aug 2005, J Gager wrote:
>>
>> > I purposefully omitted Geography, as we included a Date in the Geography
>> > structure. Is there an issue with that?
>> >
>> > -----Original Message-----
>> > From: ddi-adg-bounces at icpsr.umich.edu
>> > [mailto:ddi-adg-bounces at icpsr.umich.edu] On Behalf Of Wendy Thomas
>> > Sent: Wednesday, August 17, 2005 3:45 PM
>> > To: ddi-adg at icpsr.umich.edu
>> > Subject: [DDI-ADG] time spreadsheet
>> >
>> >
>> > Need to include "geographic time" in the list. This can be different
>> > than the data time stamp. Aggregate data is often retabulated for new
>> > goegraphies such as congressional districts (ex. 2000 data for 2002
>> > congressional district geography).
>> >
>> > Calender date: This was provided in order to allow for alternative
>> > calender systems particularly if relevant to the data. This is
>> > hypothetical but if I were collecting data related to a specific date in
>> > the Jewish Calender I need to know that date. This is particularly true
>> > if I were collecting over a number of years or months as the
>> > relationships between the Jewish Calender and Georgian calender shift
>> > and you'd never see the relationship if using only the Georgian
>> > calender.
>> >
>> > While this seems a bit of a stretch, we have frequently discussed the
>> > ability to use DDI for historical data derived from historical
>> > administrative records...kept in the calender of the time and place.
>> >
>> > SECURITY: version 2.0 4.3.4, 4.4.6
>> >
>> > security? (ATT == ID, xml-lang, source, date)
>> >
>> > <!-- 4.3.4 Security (security)
>> > -->
>> > <!--
>> > -->
>> > <!-- Provides information regarding levels of access to the variable,
>> > e.g., public, subscriber, need to know. The ISO standard for
>> > dates (YYYY-MM-DD) is recommended for use with the date
>> > attribute.
>> > -->
>> >
>> > <!ELEMENT security (#PCDATA | %a.phrase; | %e.form;)*
>> > >
>> > <!ATTLIST security
>> > %a.global;
>> > %a.date;
>> > >
>> >
>> >
>> >
>> >
>> > Wendy L. Thomas Phone: +1 612.624.4389
>> > Data Access Core Director Fax: +1 612.626.8375
>> > Minnesota Population Center Email: wlt at pop.umn.edu
>> > University of Minnesota
>> > 50 Willey Hall
>> > 225 19th Avenue South
>> > Minneapolis, MN 55455
>> >
>> > _______________________________________________
>> > DDI-ADG mailing list
>> > DDI-ADG at icpsr.umich.edu
>> > http://www.icpsr.umich.edu/mailman/listinfo/ddi-adg
>> >
>> >
>> > _______________________________________________
>> > DDI-ADG mailing list
>> > DDI-ADG at icpsr.umich.edu
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>> >
>>
>>Wendy L. Thomas Phone: +1 612.624.4389
>>Data Access Core Director Fax: +1 612.626.8375
>>Minnesota Population Center Email: wlt at pop.umn.edu
>>University of Minnesota
>>50 Willey Hall
>>225 19th Avenue South
>>Minneapolis, MN 55455
>>
>>_______________________________________________
>>DDI-ADG mailing list
>>DDI-ADG at icpsr.umich.edu
>>http://www.icpsr.umich.edu/mailman/listinfo/ddi-adg
>
>___________________________________________
>Katherine McNeill-Harman
>Data Services Librarian
>Dewey Library for Management and Social Sciences
>Massachusetts Institute of Technology
>77 Massachusetts Avenue, E53-100
>Cambridge, MA 02139
>mcneillh at mit.edu
>617-253-0787
>_______________________________________________
>DDI-ADG mailing list
>DDI-ADG at icpsr.umich.edu
>http://www.icpsr.umich.edu/mailman/listinfo/ddi-adg
Mary Vardigan
Assistant Director
Inter-university Consortium for Political and Social Research (ICPSR)
University of Michigan
P.O. Box 1248, Ann Arbor, MI 48106-1248
Phone: 734-615-7908
Fax: 734-647-8200
www.icpsr.umich.edu
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