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Since 2021 the Standards Working Group (Standards WG) of Hyperledger's Climate Action and Accounting Special Interest Group (CA2-SIG) worked has been working on developing an ontology for anthropogenic impact accounting, of which climate accounting Anthropogenic Impact Accounting Ontology (AIAO). Climate accounting is currently the primary use case for AIAO. The ontology aims to enable interoperability between the plethora of impact accounting standards and methodologies in the market, allowing the further development of systems such as a global climate impact accounting ledger.

Up to To date, the WG has formulated an ontology comprising a current total of 46 classes and 11 primary axioms with several more axioms on the secondary and tertiary level. The core concepts are explicated on the Standards WG's wiki and encoded in an OWL file. During the 2022/2023 southern hemisphere's summer break the Nova Institute sponsored and hosted a mentorship programme that recruited three second-year ICT university students from South Africa to refine the OWL file, develop a Turtle parser and set up an MVP triple store for the ontology.

The next steps towards operationalization of the ontology are aimed at developing the tools for interoperability between the AIA ontology and existing vocabularies in the field of impact accounting, starting with those from the climate accounting space. This will involve mapping the existing vocabularies and standards to the ontology, improving on the examples produced by the students; annotating existing climate impact data from selected case studies; and building a shape graph to validate annotated data.

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1. SSSOM maps that map AIAO to at least two prominent vocabulariesgreenhouse gas accounting standards.
2. A SHACL shape graph that can be used to validate that the conformation of annotated data conform to AIAO.
3. Tagged impact documents from at least 10 representative case studies, stored in an appropriate open source graph database. One of the case studies will be the work of our sister working group, the Carbon Accounting and Certification WG of CA2-SIG.
4. EITHER (a.) an AI model to annotate further documents according to AIAO, OR (b.) a constrained SPARQL endpoint for querying annotated climate impact data. The choice between (a) an (b) will depend on the mentee's skillset and interests.

Relation to Hyperledger 

The Standards Working Group This project will directly advance the work of the Hyperledger Climate Action and Accounting SIG (CA2-SIG), especially that of the Standards WG.

Mentee Skills

The mentee must have:

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