Within the Analysis results from an LCA calculation, a pedigree matrix is given by every result. How is this calculated from the pedigree matrices of the input data?

Thanks!

+1 vote

Hi Tom, the uncertainty is calculated based on the value in the *Uncertainty* column of the *Inputs/Outputs* table of a process. You can assign a value manually or use the value from the *Data quality entry* column (Pedigree matrix; when you have the *Pedigree matrix* open, scroll down and select *Use as uncertainty value*). You can define the uncertainties for the pedigree matrix under *Indicators and parameters* - *Data quality systems* - <the respective DQ system> - Scroll down to the section *Uncertainties*.

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Sorry, - after re-reading your question I think my answer does not really match your question. Yes, the scores are calculated from the pedigree scores in the Inputs/Outputs table of a process. When you calculate the results of a product system select "Assess data quality". If you then click on "Next" before calculating the results, you can specify how the DQ scores are calculated.