{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schemas.mpai.community/PGM1/V1.0/data/SalientObjectMatrix.json",
  "title": "Salient Object Matrix V1.0",
  "description": "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.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "Header",
    "MInstance",
    "UEnvironment",
    "SessionID",
    "SalientObjectMatrixID",
    "SalientObjectMatrixTime",
    "Rows"
  ],
  "properties": {
    "Header": {
      "type": "string",
      "const": "PGM-SOM-V1.0"
    },
    "MInstance": {
      "type": "string",
      "description": "Identifier of the M-Instance."
    },
    "UEnvironment": {
      "type": "string",
      "description": "Identifier of the U-Environment."
    },
    "SessionID": {
      "type": "string",
      "description": "Identifier of the A-User session."
    },
    "SalientObjectMatrixID": {
      "type": "string",
      "description": "Identifier of this instance."
    },
    "SalientObjectMatrixTime": {
      "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SimpleTime.json"
    },
    "Criteria": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "The criteria that form the columns."
    },
    "Rows": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "VisualObjectID": {
            "type": "string"
          },
          "Rank": {
            "type": "integer",
            "minimum": 1,
            "description": "Position in the ranking, starting from 1."
          },
          "SalienceScore": {
            "type": "number",
            "minimum": 0,
            "maximum": 1,
            "description": "Salience score, 0 to 1."
          },
          "Scores": {
            "type": "object",
            "additionalProperties": {
              "type": "number",
              "minimum": 0,
              "maximum": 1
            },
            "description": "Score for each criterion of Criteria."
          },
          "InteractionRelevance": {
            "type": "number",
            "minimum": 0,
            "maximum": 1,
            "description": "Relevance of the interactions the object offers."
          }
        },
        "required": [
          "VisualObjectID",
          "Rank",
          "SalienceScore"
        ]
      },
      "description": "The rows of the matrix, one for each Visual Object."
    },
    "DataXMData": {
      "$ref": "https://schemas.mpai.community/PTF/V1.0/data/DataExchangeMetadata.json"
    },
    "DescrMetadata": {
      "type": "string",
      "maxLength": 2048
    }
  }
}