<compound-kwd>

Compound Keyword

Wrapper element for multi-part keywords (for example, a code and its meaning).

Remarks

Some keywords are a simple word or phrase; such keywords should generally be tagged using the <kwd> element. The <compound-kwd> element is used when keywords are composed of multiple parts, such as:
  • a code and its meaning, or
  • an abbreviation and its expansion.
For more information on the handling of compound keywords, see the tagging practices section Complex/Compound/Nested Keywords.
Attribute Best Practice: If the content of the <compound-kwd> element is a term from a controlled vocabulary (ontology, taxonomy, term-list, vocabulary, industry glossary, or other known source), the vocabulary attributes should be used to identify that source. The source named can be a formal ontology or an informal field of study.
Term Identification Attributes: Two attributes are used in this Tag Set to identify an individual term from a vocabulary (controlled or an uncontrolled):
vocab-term
The content of the element is the display version of the vocabulary or taxonomic term. The @vocab-term attribute holds the canonical version of the same term, as it appears in the vocabulary. For example, if the attribute value is “digitized-vor”, the element might contain the display text “Digitized Version of Record”.
vocab-term-identifier
Unique identifier of the term within a specific vocabulary, such as (but not limited to) an item number, a URI, DOI, etc.
Vocabulary Identification Attributes: Two attributes are used in this Tag Set to identify a vocabulary. If these attributes have already been used on <kwd-group>, they need not be repeated on each <compound-kwd>.
vocab
Name of the controlled or uncontrolled vocabulary, taxonomy, ontology, index, database, or similar that is the source of the term. For example, for a subject term, a value might be the IPC Codes (“ipc”) or MESH headings (“mesh”). For an uncontrolled term, the value might be an area of study such as “medical-devices” or merely the word “uncontrolled”.
vocab-identifier
Unique identifier of the vocabulary, such as (but not limited to) a URI or DOI. For example, for Dublin Core (DCC), the identifier may be “http://dublincore.org/documents/2012/06/14/dces/”.

Related Elements

This Tag Set contains several differently-structured types of keywords:
  • <kwd> is used with simple keywords: words or phrases.
  • <compound-kwd> is used with multi-part keywords, such as a keyword that is a code-and-term pair.
  • <nested-kwd> is used with hierarchical keywords structures, such as taxonomies, to record a portion of a taxonomic hierarchy. Both simple and compound keywords can be nested hierarchically.

Attributes

Content Model

<!ELEMENT  compound-kwd %compound-kwd-model;                         >

Expanded Content Model

(compound-kwd-part+)

Description

This element may be contained in:

Example 1

Keywords for codes and their expansions:
...
<article-meta>
...  
<kwd-group kwd-group-type="Inspec-class">
<compound-kwd>
<compound-kwd-part content-type="code">B0260</compound-kwd-part>
<compound-kwd-part content-type="text">Optimisation 
techniques</compound-kwd-part>
</compound-kwd>
<compound-kwd>
<compound-kwd-part content-type="code">B6140</compound-kwd-part>
<compound-kwd-part content-type="text">Signal processing and detection</compound-kwd-part>
</compound-kwd>
<compound-kwd>
<compound-kwd-part content-type="code">B6320</compound-kwd-part>
<compound-kwd-part content-type="text">Radar equipment, systems 
and applications</compound-kwd-part>
</compound-kwd>
</kwd-group>
</article-meta>
...
...
<article-meta>
...
<abstract>...</abstract>
<kwd-group kwd-group-type="author">
<compound-kwd content-type="ISO-639-1">
<compound-kwd-part content-type="ISO-639-1-code">de</compound-kwd-part>
<compound-kwd-part content-type="ISO-639-1-language">German</compound-kwd-part>
</compound-kwd>
<compound-kwd content-type="ISO-639-1">
<compound-kwd-part content-type="ISO-639-1-code">en</compound-kwd-part>
<compound-kwd-part content-type="ISO-639-1-language">English</compound-kwd-part>
</compound-kwd>
<compound-kwd content-type="ISO-639-1">
<compound-kwd-part content-type="ISO-639-1-code">fr</compound-kwd-part>
<compound-kwd-part content-type="ISO-639-1-language">French</compound-kwd-part>
</compound-kwd>
...
</kwd-group>
</article-meta>
...
... 
<kwd-group> 
<compound-kwd>
<compound-kwd-part content-type="code">B01D57/02</compound-kwd-part>
<compound-kwd-part content-type="value">By electrophoresis</compound-kwd-part>
</compound-kwd>
...
</kwd-group>
...

Example 2

Keywords used for abbreviations and their expansions:
...
<article-meta>
...
<abstract>...</abstract>
<kwd-group kwd-group-type="author">
<compound-kwd>
<compound-kwd-part content-type="abbrev">AODM</compound-kwd-part>
<compound-kwd-part content-type="expansion">adult onset diabetes mellitus</compound-kwd-part>
</compound-kwd>
<compound-kwd>
<compound-kwd-part content-type="abbrev">DI</compound-kwd-part>
<compound-kwd-part content-type="expansion">diabetes insipidus</compound-kwd-part>
</compound-kwd>
<compound-kwd>
<compound-kwd-part content-type="abbrev">DKA</compound-kwd-part>
<compound-kwd-part content-type="expansion">diabetic ketoacidosis</compound-kwd-part>
</compound-kwd>
...
</kwd-group>
</article-meta>
...

Example 3

An ICD10 vocabulary:
...
<kwd-group kwd-group-type="conditions">
  <compound-kwd vocab="ICD10" vocab-term="J00-J99">
    <compound-kwd-part>J00-J99</compound-kwd-part>
    <compound-kwd-part>Diseases of the respiratory system</compound-kwd-part>
  </compound-kwd>
</kwd-group>
...

Example 4

Identifying the vocabulary:
  
...
<kwd-group id="KG1" vocab="Inspec"
  vocab-identifier="http://www.theiet.org/resources/inspec/about/records/ithesaurus.cfm"
  xml:lang="en">
 <compound-kwd id="KG1.1">
  <compound-kwd-part content-type="code">A7865P</compound-kwd-part>
  <compound-kwd-part content-type="text">Optical properties of other 
   inorganic semiconductors and insulators (thin films/low dimensional 
   structures)</compound-kwd-part>
 </compound-kwd>

 <compound-kwd id="KG1.2">
  <compound-kwd-part content-type="code">A7865T</compound-kwd-part>
  <compound-kwd-part content-type="text">Optical properties of organic
   compounds and polymers (thin films/low dimensional structures)</compound-kwd-part>
 </compound-kwd>
</kwd-group>
...

  

Example 5

Coded keywords (including Japanese):
...
<article-meta>
...
<kwd-group xml:lang="ja">
<compound-kwd>
<compound-kwd-part content-type="code">321</compound-kwd-part>
<compound-kwd-part content-type="text">加温空気</compound-kwd-part>
</compound-kwd>
</kwd-group>
</article-meta>
...