Afternoon session data dictionary (april 2013)
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Transcript of Afternoon session data dictionary (april 2013)
Afternoon Session: Data Dictionary
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Q: What’s the goal of the data dictionary?
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A: Comparability.
1. To give a researcher the information (s)he needs to conduct an in depth comparison of different inventories (humans).2. To help automate the comparison of different inventories (machines).
(And also: Transparency.)
What isn’t the data dictionary trying to do?
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1. Suggest a new or better format for GHG, BC, and CAC inventories.2. Make any substantial changes to the way inventories are produced.
What will the final product look like?
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1. A paper containing UML Class Diagrams and Schemata relating to the objects included in an inventory, as well as examples of the framework applied to GHG, BC, and CAC Inventory data.2. A supplementary website containing UML Class Diagrams and Schemata.
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schema.org
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foaf-project.org
So if this works, what does the future look like?
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1. Centralized web-based repository of inventory data, with query, visualization, and distribution tools.2. Decentralized markup of inventories with RDFa Lite to make published inventories machine-readable.
Markup with RDFa Lite
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Q: Can we apply the same framework to GHG, BC, and CAC inventories?
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A. Yes. Each type of inventory has a similar structure, based on the
relationships between core objects.
Inventory Schema: Core Objects
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Inventory Class
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Inventory Class
Pollutant coverage defined by one-to-many relationship.
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Inventory Class
Sector coverage defined by one-to-many relationship.
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SourceCategory Class
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SourceCategory Class is RecursiveSourceCategories have parent-child relationships with
other SourceCategories
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SourceCategories are Sectors
A sector is a top-level SourceCategory
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Tree Structure of SourceCategories
EstimationMethodology Class
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EstimationMethodologies and EmissionFactors
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EstimationMethodologies and EmissionFactors
EstimationMethodologies and EmissionFactors can apply to multiple inventories. EmissionFactorValues are inventory-
specific
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EmissionMetric Class
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EmissionMetric Class
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EmissionMetric Class
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Inventory Schema
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Four Objects are Inventory-Specific, the rest are reusable
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So, how about an example?
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Aluminum Production, CO2 Emissions from Sodeberg cells
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