[DDI-ADG] time pieces in V 2.0

Mon Jul 25 14:22:13 EDT 2005

Hi,

Just a couple of general comments about time and how it fits into the 3.0
outline. There is the multi-use class of time elements that can be used in
any module. There can also be special or specific use time related
elements in the individual modules. While I haven't done this, it might be
useful to determine which of the current or needed time elements should be
in the repeatable class and which are module specific.

wendy

On Mon, 25 Jul 2005, Sanda Ionescu wrote:

> Hi.
>
> Just one remark - I think multiple ranges could be specified in Version
> 2.0, by using the attribute "cycle". For example,
>
> <timePrd event="start" date="1998-05-01" cycle="1" (or:"Wave 1", or "Cycle
> 1")>May 1, 1998</timePrd>
> <timePrd event="end" "date="1998-05-31" cycle="1" (or:"Wave 1", or "Cycle
> 1")>May 31, 1998</timePrd>,
>
> then,
>
> <timePrd event="start" date="2000-05-01" cycle="2" (or:"Wave 2", or "Cycle
> 2")>May 1, 1998</timePrd>
> <timePrd event="end" "date="2000-05-25" cycle="2" (or:"Wave 2", or "Cycle
> 2")>May 25, 1998</timePrd>,
>
>
> the difficulty was that we did not have a controlled vocabulary for the
> "cycle" attribute, so it was hard to read by software.
>
> Sanda.
>
>
> At 01:42 PM 7/25/2005, Mary Vardigan wrote:
> >Thanks, Sanda. A few questions/comments:
> >
> >* A goal for Version 3.0 is to have a way to specify multiple date ranges
> >in Time Period and Date of Collection. This wasn't possible in Version
> >2.0. Plus we might want to associate the date ranges with cycles.
> >
> >* Does it make sense to have Time Method as a discrete methodology item or
> >should this be broader to encompass other types of methodologies? Either
> >way, do we want a controlled vocabulary for this? If so, how do we develop
> >it? Ken has done some of this work in compiling the different types of
> >methodologies for ELSST.
> >
> >* Re frequency, this could describe a dataset or a data series. Should it
> >be an element associated with Series information also?
> >
> >* We might also discuss the issues of administrative dates and what our
> >responsibility is in that area.
> >
> >Mary
> >
> >At 08:48 AM 7/21/2005, Sanda Ionescu wrote:
> >>Section 2, Study Description:
> >>
> >>2.2.3.1 <timePrd event="" date="" cycle="">
> >>
> >>Tag Library description and examples:
> >>Description: The time period to which the data refer. This item reflects
> >>the time period covered by the data, not the dates of coding or making
> >>documents machine-readable or the dates the data were collected. Also
> >>known as span. Use the event attribute to specify "start", "end", or
> >>"single" for each date entered. The ISO standard for dates (YYYY-MM-DD)
> >>is recommended for use with the "date" attribute. The "cycle" attribute
> >>permits specification of the relevant cycle, wave, or round of data. Maps
> >>to Dublin Core Coverage element. Inclusion of this element is recommended.
> >>
> >>Example(s):
> >><timePrd event="start" date="1998-05-01">May 1, 1998</timePrd>
> >><timePrd event="end" "date=1998-05-31">May 31, 1998</timePrd>
> >>
> >>2.2.3.2 <collDate event="" date="" cycle="">
> >>
> >>Description: Contains the date(s) when the data were collected. Use the
> >>event attribute to specify "start", "end", or "single" for each date
> >>entered. The ISO standard for dates (YYYY-MM-DD) is recommended for use
> >>with the "date" attribute. The "cycle" attribute permits specification of
> >>the relevant cycle, wave, or round of data. Maps to Dublin Core Coverage
> >>element. Inclusion of this element in the codebook is recommended.
> >>
> >>Example(s):
> >><collDate event="single" date="1998-11-10">10 November 1998</collDate>
> >>
> >>
> >>2.3.1.1 <timeMeth method="">
> >>
> >>Description: The time method or time dimension of the data collection.
> >>The "method" attribute is included to permit the development of a
> >>controlled vocabulary for this element.
> >>
> >>Example(s):
> >><timeMeth>panel survey</timeMeth>
> >><timeMeth>cross-section</timeMeth>
> >><timeMeth>trend study</timeMeth>
> >><timeMeth>time-series</timeMeth>
> >>
> >>2.3.1.3 <frequenc freq="">
> >>
> >>Description: For data collected at more than one point in time, the
> >>frequency with which the data were collected. The "freq" attribute is
> >>included to permit the development of a controlled vocabulary for this element.
> >>
> >>Example(s):
> >><freq>monthly</freq>
> >><freq>quarterly</freq>
> >>
> >>4.3 <var temporal="">
> >>
> >>The attribute "temporal" indicates whether the variable relays
> >>time-related information. (Currently set as Y|N with N as a default).
> >>
> >>[Aside from these, of course,  we have the various dates in citation, but
> >>those are "administrative" rather than study-related information].
> >>
> >>Sanda.
> >>
> >>
> >>
> >>
> >>Sanda Ionescu,
> >>Research Associate
> >>Inter-university Consortium for Political and Social Research (ICPSR)
> >>The University of Michigan
> >>P.O. Box 1248
> >>Ann Arbor, MI 48106
> >>
> >>Phone: (734) 615-7890
> >>Fax: (734) 615-7890
> >>        (734) 647-8200
> >>
> >>_______________________________________________
> >>DDI-ADG mailing list
> >>DDI-ADG at icpsr.umich.edu
> >>http://www.icpsr.umich.edu/mailman/listinfo/ddi-adg
> >
> >Mary Vardigan
> >Director, Collection Delivery
> >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
>
>
>
> Sanda Ionescu,
> Research Associate
> Inter-university Consortium for Political and Social Research (ICPSR)
> The University of Michigan
> P.O. Box 1248
> Ann Arbor, MI 48106
>
> Phone: (734) 615-7890
> Fax: (734) 615-7890
>         (734) 647-8200
>
> _______________________________________________
> DDI-ADG mailing list
> DDI-ADG at icpsr.umich.edu
> http://www.icpsr.umich.edu/mailman/listinfo/ddi-adg
>

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