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<p class="MsoNormal">We’re largely trying to avoid using date expressions too, for the same reasons—and
<a href="https://archivesspace.atlassian.net/browse/ANW-1273">this ticket</a> is something we’re hoping will be approved at some point to make the normalized dates a little easier to read for users.<o:p></o:p></p>
<p class="MsoNormal">--Benn<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> archivesspace_users_group-bounces@lyralists.lyrasis.org <archivesspace_users_group-bounces@lyralists.lyrasis.org>
<b>On Behalf Of </b>Ron Van den Branden<br>
<b>Sent:</b> Thursday, October 13, 2022 11:02 AM<br>
<b>To:</b> Archivesspace Users Group <archivesspace_users_group@lyralists.lyrasis.org><br>
<b>Subject:</b> Re: [Archivesspace_Users_Group] how to encode open-ended date ranges?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="NL-BE">Hi Jim,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL-BE"><o:p> </o:p></span></p>
<p class="MsoNormal">Thanks for your thoughts. We’re aiming at minimizing the use of date expressions as much as possible, in order to:<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l2 level1 lfo1">Reduce the workload and avoid the need to record date information twice (once as date expression, once as standardized date)<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l2 level1 lfo1">Reduce the amount of possible input error and ambiguity caused by that redundancy<o:p></o:p></li></ul>
<p class="MsoNormal">In other words: if registrants have to enter a date, it would seem most efficient if they could express this as just a standardized date, which is both precise and machine-processable. Also, for exchangeability, a precise standardized representation
of dates would seem preferable over date expressions, wouldn’t it?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Ron<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span lang="NL">Van:</span></b><span lang="NL"> <a href="mailto:archivesspace_users_group-bounces@lyralists.lyrasis.org">
archivesspace_users_group-bounces@lyralists.lyrasis.org</a> <<a href="mailto:archivesspace_users_group-bounces@lyralists.lyrasis.org">archivesspace_users_group-bounces@lyralists.lyrasis.org</a>>
<b>Namens </b>James E. Cross<br>
<b>Verzonden:</b> donderdag 13 oktober 2022 16:56<br>
<b>Aan:</b> Archivesspace Users Group <<a href="mailto:archivesspace_users_group@lyralists.lyrasis.org">archivesspace_users_group@lyralists.lyrasis.org</a>><br>
<b>Onderwerp:</b> Re: [Archivesspace_Users_Group] how to encode open-ended date ranges?<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="NL-BE"><o:p> </o:p></span></p>
<p class="MsoNormal">Another thought: use single date in both cases and let the “Date Expression” field indicate that it is open-ended, i.e. single date “1990,” date expression “1990 - ” or single date “1990,” date expression “1990 (end date)” The date expression
is what the user will see in the PUI.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Jim<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="mso-line-height-alt:0pt"><b><span style="font-size:14.0pt;font-family:"Arial",sans-serif;color:#F36721">James Cross</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#333333"> <br>
</span><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2E1A47">Manuscripts Archivist</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#333333"><br>
Special Collections and Archives<br>
Clemson University<br>
<br>
Strom Thurmond Institute Building<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-line-height-alt:0pt"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#333333">230 Kappa Street<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-line-height-alt:0pt"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#333333">Clemson, SC 29634<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-line-height-alt:0pt"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#333333"><a href="mailto:jcross@clemson.edu">jcross@clemson.edu</a>
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;mso-line-height-alt:0pt"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#333333">864.656.5182<br>
<a href="https://urldefense.com/v3/__http:/library.clemson.edu/specialcollections/__;!!Dq0X2DkFhyF93HkjWTBQKhk!Vhv7kTVtnT65Ea6wvRVHjpJxPAGILvbvp5uxHvgQMY1hz876NvjNUT1ud7NpUoLSyhAbV7lvXsqNxGnMEAdcYXey5ZmTmr7OpUUB0Iiz$">http://library.clemson.edu/specialcollections/</a>
<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> <a href="mailto:archivesspace_users_group-bounces@lyralists.lyrasis.org">
archivesspace_users_group-bounces@lyralists.lyrasis.org</a> <<a href="mailto:archivesspace_users_group-bounces@lyralists.lyrasis.org">archivesspace_users_group-bounces@lyralists.lyrasis.org</a>>
<b>On Behalf Of </b>Ron Van den Branden<br>
<b>Sent:</b> Thursday, October 13, 2022 10:32 AM<br>
<b>To:</b> <a href="mailto:archivesspace_users_group@lyralists.lyrasis.org">archivesspace_users_group@lyralists.lyrasis.org</a><br>
<b>Subject:</b> [Archivesspace_Users_Group] how to encode open-ended date ranges?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="NL-BE">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL-BE"><o:p> </o:p></span></p>
<p class="MsoNormal">We’re in the process of migrating data to ArchivesSpace, and one thing I’m still struggling with is how to encode open-ended date ranges, using standardized dates only. In other words: how to express:<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l5 level1 lfo2">the fact that only a start date is known<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l5 level1 lfo2">or the fact that only an end date is known<o:p></o:p></li></ul>
<p class="MsoNormal">…while still indicating this known date is the start / end of a range whose other end is not known; as opposite to expressing a precise singular/punctual date.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Given the fact that ArchivesSpace currently uses 2 distinct date models for accessions, resources/archival objects and digital objects vs agents (see
<a href="https://urldefense.com/v3/__https:/www.mail-archive.com/archivesspace_users_group@lyralists.lyrasis.org/msg05341.html__;!!PTd7Sdtyuw!QEv9HwNAtu0O8yQ0ApRp7X3OLav3cGzG6U8Z3ZWXiSBU2UtBSlOPNIlB0iboNUhLSJYzbb8_xbHNbELs8h37VQInUry3C2sr$">
https://www.mail-archive.com/archivesspace_users_group@lyralists.lyrasis.org/msg05341.html</a>), I’ll outline the observations and options I’m seeing.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">[1] Accessions, resources, archival objects, digital objects:<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">“Single” date only offers a single date field, labeled “Begin”<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l1 level1 lfo3">“Inclusive” date offers both a “Begin” and “End” date field, only one of which is required
<o:p></o:p></li></ul>
<p class="MsoNormal">Would this be a good strategy:<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo4">“singular/punctual” dates: “single” date, one value as “Begin” date<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo4">date range: “inclusive” date, start and end dates as “Begin” and “End” dates, respectively<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo4">open-ended date range: “inclusive” date, with known date as either “Begin” or “End” date<o:p></o:p></li></ul>
<p class="MsoNormal">?<o:p></o:p></p>
<p class="MsoNormal">This leads me to the question whether in practice “single” dates are used at all for anything except accession dates, creation dates of digital objects, or as dates for only the lowest-level archival objects?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">[2] Agents:<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l4 level1 lfo5">“Single” date only offers a single date field, which can be labeled as either “Begin” or “End”<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l4 level1 lfo5">“Inclusive” date offers both a “Begin” and “End” date field, of which “Begin” is mandatory<o:p></o:p></li></ul>
<p class="MsoNormal">Would this be a good strategy:<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l3 level1 lfo6">“singular/punctual” dates: “single” date, one value as either “Begin” or “End” date<o:p></o:p></li></ul>
<p class="MsoListParagraph">Note: in EAC output, the begin/end qualification is dismissed: both are exported without distinction as e.g.
<br>
<date localType="existence" standardDate="2022-10-08">2022-10-08</date><o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo4">date range: “inclusive” date, start and end dates as “Begin” and “End” dates, respectively<o:p></o:p></li></ul>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l3 level1 lfo6">open-ended date range: ?
<br>
<span style="font-family:Wingdings">è</span> problem if only end date is known, since begin date is mandatory<o:p></o:p></li></ul>
<p class="MsoNormal">In other words: how would one differentiate between, e.g.:<o:p></o:p></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l3 level1 lfo6">birth date of a living person (1990 - )<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l3 level1 lfo6">birth date of a deceased person, whose death date is unknown (1800 - ?)<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l3 level1 lfo6">death date of a person whose birth date is unknown (? - 1950)<o:p></o:p></li></ul>
<p class="MsoNormal">?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The documentation in the ArchivesSpace Help Center merely documents the different fields, but I couldn’t find much guidance on how to use them in practice. The DACS, EAD, and EAC documentation is rather sparse as well regarding open-ended
date ranges. Therefore, any guidance on this matter would be much appreciated!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Ron<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="line-height:125%"><b><span lang="NL-BE" style="font-size:9.0pt;line-height:125%;font-family:"Arial",sans-serif;color:#4D4D4D">Ron Van den Branden | functioneel analist - applicatiebeheerder Letterenhuis</span></b><span lang="NL-BE" style="font-size:9.0pt;line-height:125%;font-family:"Arial",sans-serif;color:#4D4D4D"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:125%"><span lang="NL-BE" style="font-size:9.0pt;line-height:125%;font-family:"Arial",sans-serif;color:#4D4D4D">Stad Antwerpen | Talentontwikkeling en Vrijetijdsbeleving</span><span lang="NL-BE" style="font-size:9.0pt;line-height:125%;font-family:"Arial",sans-serif">
<span style="color:#4D4D4D">| Musea en Erfgoed <o:p></o:p></span></span></p>
<p class="MsoNormal" style="line-height:125%"><span lang="NL-BE" style="font-size:9.0pt;line-height:125%;font-family:"Arial",sans-serif;color:#4D4D4D">Minderbroedersstraat 22, 2000 Antwerpen<o:p></o:p></span></p>
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