afternoon session data dictionary (april 2013)

Afternoon Session: Data Dictionary

CEC Online, Interactive, Informational Platform on Climate Change Kickoff Meeting

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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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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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afternoon session data dictionary (april 2013)

Documents