Afternoon session data dictionary (april 2013)

Afternoon Session: Data Dictionary

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

Q: What’s the goal of the data dictionary?

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?

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?

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.

schema.org

foaf-project.org

So if this works, what does the future look like?

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

Q: Can we apply the same framework to GHG, BC, and CAC inventories?

A. Yes. Each type of inventory has a similar structure, based on the

relationships between core objects.

Inventory Schema: Core Objects

Inventory Class

Pollutant coverage defined by one-to-many relationship.

Inventory Class

Sector coverage defined by one-to-many relationship.

SourceCategory Class

SourceCategory Class is RecursiveSourceCategories have parent-child relationships with

other SourceCategories

SourceCategories are Sectors

A sector is a top-level SourceCategory

Tree Structure of SourceCategories

EstimationMethodology Class

EstimationMethodologies and EmissionFactors

EstimationMethodologies and EmissionFactors can apply to multiple inventories. EmissionFactorValues are inventory-

specific

EmissionMetric Class

Inventory Schema

Four Objects are Inventory-Specific, the rest are reusable

So, how about an example?

Aluminum Production, CO2 Emissions from Sodeberg cells

Afternoon session data dictionary (april 2013)

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