Definition
Functional Requirements
Syntax
Semantics
Conformance Testing
Performance Assessment
Definition
Proposition (PGM-PRP): Propositions produced by Prompt Creation. A Proposition links a subject to an object through a predicate, with spatial and temporal context where applicable. Intent and Referent Analysis uses Propositions to express the resolution of the referring expressions (pronouns, definite descriptions, demonstratives, deictic gestures); Prompt Contextualisation adds Propositions that represent contextual facts, timing guidance and phrasing constraints.
Functional Requirements
- Header: The Data shall have Header “PGM-PRP-V1.0”.
- Identification: The Data shall carry the identifiers of the M‑Instance, of the U‑Environment and of the session, and a unique identifier and a time (PropositionID, PropositionTime).
- Propositions: The Data shall include propositions.
- Metadata: The Data shall include DataXMData and may include DescrMetadata.
Syntax
https://schemas.mpai.community/PGM1/V1.0/data/Proposition.json
Semantics
Table 1 – Semantics of Proposition
| Label | Description |
| Header | Header of the Data Type, with the version. (required) |
| MInstance | Identifier of the M-Instance. (required) |
| UEnvironment | Identifier of the U-Environment. (required) |
| SessionID | Identifier of the A-User session. (required) |
| PropositionID | Identifier of this instance. (required) |
| PropositionTime | Time at which the Data was produced. (required) |
| Propositions | Propositions. (required) |
| – PropositionID | Proposition ID. (required) |
| – Kind | What the Proposition expresses. One of: referent_resolution, contextual_fact, timing_guidance, phrasing_constraint. |
| – Subject | Identifier of the subject (an Entity of the scene) or an expression. (required) |
| – Predicate | Predicate. (required) |
| – Object | Identifier of the object (an Entity or Item of the scene) or an expression. |
| – Expression | For a referent resolution, the referring expression that was resolved. |
| – Spatial | Spatial context. |
| – Temporal | Temporal context. |
| – Confidence | Confidence, 0 to 1. |
| DataXMData | Data Exchange Metadata of MPAI-PTF: provenance, authorisation, security and confidence of the Data. |
| DescrMetadata | Descriptive metadata (plain text, at most 2048 characters). |
Conformance Testing
Data conforms with Proposition if it validates against the schema of Section 3. If a schema contains references to other schemas, conformance of data for the primary schema implies that any data referencing a secondary schema shall also validate against the relevant schema.
Performance Assessment
Not part of this specification.
