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Ontology

(What are the 'things' that the system should know about?   

What are the defining properties or characteristics of each 'thing'?)

Epistemology (How will the system get information about these things and their attributes?)Semiology (How will each of the things be represented in the system?)

Agents



  • unique identifier (identity)
  • type (individual or group; if group, what type of group, e.g. organisation, company or movement; auditor)

Agent asserts their identity

Digital signature

Demonstration of control (challenge-response)

Activities


  • unique identifier
  • location
  • start time
  • end time (possibly)
  • agent
  • inputs (e.g. materials and energy; consumables and non-consumables)
  • outputs
  • processes

  • objective (create, reduce, destroy, avoid, verify) (optional / not required in all instances)

* An audit is a special type of activity

PDDs

MRs


States

  • unique identifier
  • location
  • point in time
  • metrics
  • type (actual [measured] or baseline [counterfactual])

Indicators delivered via PDDs and MRs


State changes

Impact claims made by agents

An impact claim (a state change claim)

  • unique identifier
  • state "before"
  • state "after"
  • causal connection between agent and activity
  • standard followed (ID)
  • effect (e.g. primary or secondary)

Indicators
  • definition
  • unit of measure
  • rationale
  • calculation
  • credibility


Standards
  • unique identifier
  • applicability - type of agent, type of activity, state
  • requirements (e.g. reporting requirements, calculation requirements)
  • version


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Someone or something evaluates the claimAn impact claim (a state change claim)

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Should there be an event class? An event is like an activity but without the intention of an agent. An accident is an event but it is not an activity. 

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