URI: http://www.qualityml.org/1.0/metrics/CoefficientOfDetermination
Name: Coefficient of determination
Alternative names:
Definition:

The coefficient of determination is commonly represented by the letter r2 and may be referred to as the square of the sample correlation coefficient or the sample Pearson correlation coefficient. We can obtain a formula for r2 by substituting estimates of the covariances and variances based on a sample into the formula. The expression for r2 is:


Parameters:  
Source: GVQ
Categories: Thematic accuracy
Further information: Similar to http://www.uncertml.org/statistics/correlation. See also http://en.wikipedia.org/wiki/Coefficient_of_determination
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="CoefficientOfDetermination" type="qml:CoefficientOfDeterminationType" substitutionGroup="un:AbstractSummaryStatistic"/>
<complexType name="CoefficientOfDeterminationType">
<complexContent>
<extension base="un:AbstractSummaryStatisticType">
<sequence>
<element name="values" type="un:ProbabilityValuesType"/>
</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:CoefficientOfDetermination>
<qml:values>0.81</qml:values>
</qml:CoefficientOfDetermination>
JSON example:
N/A
API example:
N/A
Value constraints: categories: any string
counts: any positive natural number