This year, metadata development is one of our key priorities and we’re making a start with the release of version 5.4.0 of our input schema with some long-awaited changes. This is the first in what will be a series of metadata schema updates.
What is in this update?
Publication typing for citations
This is fairly simple; we’ve added a ‘type’ attribute to the citations members supply. This means you can identify a journal article citation as a journal article, but more importantly, you can identify a dataset, software, blog post, or other citation that may not have an identifier assigned to it. This makes it easier for the many thousands of metadata users to connect these citations to identifiers. We know many publishers, particularly journal publishers, do collect this information already and will consider making this change to deposit citation types with their records.
Every year we release metadata for the full corpus of records registered with us, which can be downloaded for free in a single compressed file. This is one way in which we fulfil our mission to make metadata freely and widely available. By including the metadata of over 165 million research outputs from over 20,000 members worldwide and making them available in a standard format, we streamline access to metadata about scholarly objects such as journal articles, books, conference papers, preprints, research grants, standards, datasets, reports, blogs, and more.
Today, we’re delighted to let you know that Crossref members can now use ROR IDs to identify funders in any place where you currently use Funder IDs in your metadata. Funder IDs remain available, but this change allows publishers, service providers, and funders to streamline workflows and introduce efficiencies by using a single open identifier for both researcher affiliations and funding organizations.
As you probably know, the Research Organization Registry (ROR) is a global, community-led, carefully curated registry of open persistent identifiers for research organisations, including funding organisations. It’s a joint initiative led by the California Digital Library, Datacite and Crossref launched in 2019 that fulfills the long-standing need for an open organisation identifier.
We began our Global Equitable Membership (GEM) Program to provide greater membership equitability and accessibility to organizations in the world’s least economically advantaged countries. Eligibility for the program is based on a member’s country; our list of countries is predominantly based on the International Development Association (IDA). Eligible members pay no membership or content registration fees. The list undergoes periodic reviews, as countries may be added or removed over time as economic situations change.
This page gives markup examples for members registering standards by direct deposit of XML. It is not currently possible to register the standards record type using one of our helper tools.
<standard> is the top-level element for deposit of metadata about standards developed by Standards Development Organizations (SDOs) or consortia. Standards are assigned a DOI at the title level and may also have DOIs assigned to lower level content-items. Standards deposits contain several pieces of standard-specific metadata, including standard designators and standards body information. Standards may only be deposited with schema version 4.3.6 and above.
Designator types
All standards have a designator that is used as a primary identifier. crossref4.3.6.xsd allows for a number of designator types to be applied to a DOI. A primary designator must be included in each metadata deposit. One of the following designator types must be supplied:
As-published: captured in <std_designator> (child of <std_as_published>), designator for the standard being deposited. This is an item-level designator. Typically includes the year of initial publication plus additional information such as amendment number and/or revision/reaffirmation year, for example: ASTM D6/D6M-95(2011)e1 is a designator for an ASTM standard. Any undated, family, and set designators related to the designator supplied in <std_designator> may be recorded in the corresponding attributes, for example:
Optional: an alternative as-published designator may be recorded in <std_alt_as_published>.This is intended to accommodate minor changes to a standard that do not merit assigning a new DOI. A variant form designator (see below) may also be supplied to accommodate differing forms of a designator
Undated: captured in <std_undated_designator>. An undated designator removes the year component that specifies a particular revision. Undated designators refer to a single document series. For example: ASTM C90, IEC 60601-2-11, ISO/IEC 19757-2
Family: captured in <std_family_designator>, a collection of standards which are conceptually grouped together where that grouping is not necessarily reflected in the designator in an obvious way.For example, the ISO 9000 family includes ISO 9001, ISO 9004, ISO 19011
Set: captured in <std_set_designator>. A set, also referred to as truncated form, is composed of several parts (standards that are divided into separate documents). For example, ISO 19757 is a standard in 11 parts, with the individual documents known as ISO 19757-2 where the “-” denotes a part.
Optional designators
Some optional designators may be supplied in deposits in addition to a required dated, undated, family, or set designator. They are supplied to accommodate query matching but are not considered title-level designators. These are:
Variant form: Alternative versions of a designator may be supplied in <std_variant_form>. Variant form captures stylized forms that don’t accurately reflect the true standard designator but are needed due to business practices (for example, IEEE formal designators have “std” while the display of them does not). Variant forms may be applied to <std_alt_as_published>, <std_as_published>, <std_set_designator> and <std_undated_designator>
Alternative script: captured in <std_alt_script>, accommodates designators that are published using multiple character sets
Supersedes: captured in <std_supersedes>. Designator for standard being replaced by the standard being deposited.
Adopted from: captured in <std_adopted_from>. Designator for standard from which the current deposit is adopted.
Revision of: captured in <std_revision_of>. Designator for the previous revision of the standard being deposited.
Standards body information
The <standards_body> wrapper element has two children:
<standards_body_name>: the full name of the standards body
<standards_body_acronym>: acronym of the standards body
Both child elements are required and should reflect the standards body name and acronym used when the standard was published. Changes in standards body names and acronyms over time will be accounted for within Crossref’s query mechanism.
History
Crossref began accepting metadata deposits for standards in 2005. The schema was modified significantly for standards with the inception of the Standards Technical Working Group. Significant changes to the deposit and indexing of designators were made with schema version 4.3.6, as a result standards may only be deposited schema versions 4.3.6 and above.