URI: http://www.qualityml.org/1.0/metrics/OmissionError
Name: Omission Error
Alternative names: Exclusion error
Definition:

In a confusion matrix, off-diagonal row elements represent ground truth items of a certain class which were excluded from that class during classification. Such errors are also known as errors of omission or exclusion.

Parameters: actual categories
Source: GeoViQua
Categories: Thematic accuracy
Further information:  
XML schema:
<schema xmlns:qml="http://www.qualityml.org/1.0" 
xmlns:un="http://www.uncertml.org/2.0" 
xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.qualityml.org/1.0" 
elementFormDefault="qualified" attributeFormDefault="unqualified">
<import namespace="http://www.uncertml.org/2.0" schemaLocation="../../uncertml/2.0/uncertml.xsd"/>

<element name="OmissionError" type="qml:OmissionErrorType" substitutionGroup="un:AbstractSummaryStatistic"/>
<complexType name="OmissionErrorType">
<complexContent>
<extension base="un:AbstractSummaryStatisticType">
<sequence>
<element name="actualCategories" type="un:CategoricalValuesType"/>
<element name="values" type="un:ContinuousValuesType"/>
</sequence>
</extension>
</complexContent>
</complexType>

XML example:
<un:StatisticsCollection xmlns:qml="http://www.qualityml.org/1.0" 

   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
   xsi:schemaLocation="http://www.qualitymlorg/schemas/qualityml/1.0/qualityml.xsd">

<qml:OmissionError>
<qml:actualCategories>Red Green Blue</qml:actualCategories>
<qml:values>1.57 3.14 6.28</qml:values>
</qml:OmissionError>

JSON example:
N/A
API example:
N/A
Value constraints: categories: any string
counts: any positive natural number