Profiling with a Subject Scheme Map

A subject scheme map allows you to create custom profiling values and to manage the profiling attribute values used in the DITA topics without having to write a DITA specialization.

Subject scheme maps use key definitions to define a collection of profiling values. A map that uses the set of profiling values must reference the subject scheme map in which the profiling values are defined at its highest level. To do this, you must add the type="subjectScheme" attribute on the topicref that references the subject scheme map, as in the following example:

<topicref href="test.ditamap" format="ditamap" type="subjectScheme"/>

A profiled value should be a short and readable keyword that identifies a metadata attribute. For example, the audience metadata attribute may take a value that identifies the user group associated with a particular content unit. Typical user values for a medical-equipment product line might include therapist, oncologist, physicist, radiologist, surgeon, and so on. A subject scheme map can define a list of these audience values.

EXAMPLE:

The following is an example of content from a subject scheme:

<subjectScheme>
  <!-- Pull in a scheme that defines audience user values -->
  <subjectdef keys="users">
    <subjectdef keys="therapist"/>
    <subjectdef keys="oncologist"/>
    <subjectdef keys="physicist"/>
    <subjectdef keys="radiologist"/>
    <subjectdef keys="surgeon">
      <subjectdef keys="neuro-surgeon"/>
      <subjectdef keys="plastic-surgeon"/>
    </subjectdef>
  </subjectdef>
  <!-- Define an enumeration of the audience attribute, equal to
       each value in the users subject. This makes the following values
       valid for the audience attribute: therapist, oncologist, physicist,
       radiologist, surgeon, neuro-surgeon and plastic-surgeon. -->
  <enumerationdef>
    <attributedef name="audience"/>
    <subjectdef keyref="users"/>
  </enumerationdef>
</subjectScheme>