Property talk:P8539

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ERIC Thesaurus ID
identifier for a term in the Education Resources Information Center (ERIC) Thesaurus

Applicable "stated in" value	Education Resources Information Center Thesaurus (Q72698219)
Data type	External identifier
Allowed values	[A-Za-z0-9][A-Za-z0-9\s\(\)]+
Example	preschool class (Q8174803) → Kindergarten attention span (Q4115119) → Attention Span 21st century skill (Q25304922) → 21st Century Skills accessibility (Q555097) → Accessibility (for Disabled)
Source	https://eric.ed.gov/?ti=all
Formatter URL	https://eric.ed.gov/?ti=$1
See also	Australian Thesaurus of Education Descriptors ID (P9497), Australian Educational Vocabulary ID (P7033)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P8539 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 213 Main statement 207 out of 11,761 (2% complete) 97.2% of uses Qualifier 5 2.3% of uses Reference 1 0.5% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: cell biology (Q7141), cytology (Q3009579)
List of violations of this constraint: Database reports/Constraint violations/P8539#Unique value, SPARQL (every item), SPARQL (by value)

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: biology (Q420)
List of violations of this constraint: Database reports/Constraint violations/P8539#Single value, SPARQL

Scope is as main value (Q54828448): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8539#Scope, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8539#Entity types

Format “[A-Za-z0-9][A-Za-z0-9\s\(\)]+”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8539#Format, SPARQL

Qualifiers “subject named as (P1810), reason for deprecated rank (P2241), alternative name (P4970), mapping relation type (P4390), reason for preferred rank (P7452), scope note (P9570)”: this property should be used only with the listed qualifiers. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P8539#allowed qualifiers, SPARQL

ERIC Thesaurus ID links not working correctly

Copied from Special:Permalink/1260909288#ERIC_Thesaurus_ID_links_not_working_correctly

Hi,

Thank you for creating the ERIC Thesaurus ID property. I discovered that the links from identifiers that have the + character are not working properly. For example the link for Attention+Span gets converted to https://eric.ed.gov/?ti=Attention%2BSpan That link doesn't work, whereas https://eric.ed.gov/?ti=Attention+Span does work fine. It seems that the + is the only problem. In the example with parentheses, only the plus gets changed: https://eric.ed.gov/?ti=Accessibility%2B(for%2BDisabled)

Is there a way to fix this so that the links from Wikidata to ERIC will work?

Thanks.

--- Adam Schiff

Hi UWashPrincipalCataloger I replaced the "+" by a "blank" (see on attention span (Q4115119)) and it seems to do the job. ERIC replaces "+" by "%2B" while it replaces " " by "+". Strange... Pamputt (talk) 21:50, 19 August 2020 (UTC)

@Pamputt:, @UWashPrincipalCataloger:. it appears the issue, you encountered here, has recently been fixed in T271126. unfortunately https://eric.ed.gov/ does not work for me right now, so I can't verify it--Shisma (talk) 12:55, 28 February 2021 (UTC)

@Shisma: I'm not sure why the ERIC site doesn't work for you. I just checked and it was working fine. I checked some items that have the ERIC identifier with multiple words: allied health profession (Q349843), quantum mechanics (Q944) and molecular biology (Q7202). The links to ERIC all work perfectly. UWashPrincipalCataloger (talk) 19:42, 28 February 2021 (UTC)

UWashPrincipalCataloger: the website was offline when I checked. I wanted to verify that the effect observed by Pamputt does not longer occur. And indeed, Q4115119#P8539 has changed:

	Previous Link	New Link
Unencoded	https://eric.ed.gov/?ti=Attention+Span	https://eric.ed.gov/?ti=Molecular Biology
Encoded	https://eric.ed.gov/?ti=Attention%2BSpan	https://eric.ed.gov/?ti=Molecular%20Biology

The (space) is not longer converted to +. It seems to work either way. What was the problem in the first place? --Shisma (talk) 20:35, 28 February 2021 (UTC)

When the ERIC property was first created, identifiers with a + in them didn't work and Pamputt fixed it by taking out the + and just recording a blank space. This was actually a great solution since the result matched exactly the term in the thesaurus, so it was actually an exact match for the identifier. https://eric.ed.gov/?ti=Attention%2BSpan still doesn't work, but https://eric.ed.gov/?ti=Attention%20Span does. UWashPrincipalCataloger (talk) 22:40, 28 February 2021 (UTC)