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https://jira.duraspace.org/browse/DS-1481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=27673#comment-27673
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Ivan Masár commented on DS-1481:
--------------------------------

> There may be an in-between resolution here: Maybe the UI needs to make the 
> choice more evident as to whether the "issued" date is set to 'today' or not, 
> and maybe all other formats of import (SWORD and the like) should just leave 
> the "issued" date empty if it's not included.

I'd have suggested this myself. +1
                
> "dc.date.issued" is often incorrectly set (reported from Google)
> ----------------------------------------------------------------
>
>                 Key: DS-1481
>                 URL: https://jira.duraspace.org/browse/DS-1481
>             Project: DSpace
>          Issue Type: Improvement
>          Components: DSpace API
>    Affects Versions: 1.7.0, 1.7.1, 1.7.2, 1.8.0, 1.8.1, 1.8.2, 3.0, 3.1
>            Reporter: Tim Donohue
>             Fix For: 4.0
>
>
> Google (Anurag Acharya and Darcy Darpa) has contacted DuraSpace about a 
> common indexing issue affecting all DSpace sites.
> When Google & Google Scholar index DSpace content (from a variety of 
> institutions), the "dc.date.issued" value is incorrect the majority of the 
> time. The reason is that, if unspecified, DSpace sets this issued date to the 
> *date of accession* (i.e. date that it was submitted to DSpace), see:
> https://github.com/DSpace/DSpace/blob/master/dspace-api/src/main/java/org/dspace/content/InstallItem.java#L130
> Google says this causes their crawlers (for both Google & Google Scholar) to 
> assume that the date of accession is actually the formal publication date.
> Rather than defaulting the 'dc.date.issued' to the accession date, Google 
> recommends we leave it blank.  DSpace is already tracking the accession date 
> separately (in 'dc.date.accessioned'), so it seems odd to set 
> 'dc.date.issued' to the same value by default.
> Google will be sending along some examples of this. They said they have seen 
> repositories, where 30-50% of their items all have the same "dc.date.issued", 
> as those items were all imported on the same date.
> This seems like a very reasonable recommendation to me as well.  I'm not sure 
> we should be setting 'dc.date.issued' by default, as it really is meant to be 
> the date of *formal publication*, and not the date that something is made 
> available on the web.  
> This also seems like a small fix (remove a few lines from InstallItem).

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