<complexType name="DimensionlessMeasureType">
  <annotation>
    <documentation>Dimensionless ratio or index: Pure number without physical dimensions. Used for ratios, indices, factors, and normalized parameters. May be expressed as percent (%), fraction, or Euclid. Examples include porosity, void ratio, safety factors, and correlation coefficients.</documentation>
  </annotation>
  <simpleContent>
    <extension base="diggs:DescriptorValueType">
      <attribute name="uom" type="diggs:DimensionlessUomEnumType">
        <annotation>
          <documentation>The unit of measure for dimensionless ratio or index.</documentation>
        </annotation>
      </attribute>
    </extension>
  </simpleContent>
</complexType>

<attribute name="uom" type="diggs:DimensionlessUomEnumType">
  <annotation>
    <documentation>The unit of measure for dimensionless ratio or index.</documentation>
  </annotation>
</attribute>