Definition
Functional Requirements
Syntax
Semantics
Conformance Testing
Performance Assessment
Definition
Salient Object Matrix (PGM-SOM): The Visual Objects ranked by perceptual importance and interaction relevance by Visual Salience Mapping. Each row is a Visual Object and each column a salience criterion.
Functional Requirements
- Header: The Data shall have Header “PGM-SOM-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 (SalientObjectMatrixID, SalientObjectMatrixTime).
- Criteria: The Data may include the criteria that form the columns.
- Rows: The Data shall include the rows of the matrix, one for each Visual Object.
- Metadata: The Data shall include DataXMData and may include DescrMetadata.
Syntax
https://schemas.mpai.community/PGM1/V1.0/data/SalientObjectMatrix.json
Semantics
Table 1 – Semantics of Salient Object Matrix
| 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) |
| SalientObjectMatrixID | Identifier of this instance. (required) |
| SalientObjectMatrixTime | Time at which the Data was produced. (required) |
| Criteria | The criteria that form the columns. |
| Rows | The rows of the matrix, one for each Visual Object. (required) |
| – VisualObjectID | Visual Object ID. (required) |
| – Rank | Position in the ranking, starting from 1. (required) |
| – SalienceScore | Salience score, 0 to 1. (required) |
| – Scores | Score for each criterion of Criteria. |
| – InteractionRelevance | Relevance of the interactions the object offers. |
| 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 Salient Object Matrix 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.
