{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schemas.mpai.community/PGM1/V1.0/data/EngagementMetrics.json",
  "title": "Engagement Metrics V1.0",
  "description": "The engagement of the User, its level and its mode, computed by Engagement Recalibration (User State Refinement) from the baseline User State, the cadence history and the AUC-USR Request.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "Header",
    "MInstance",
    "UEnvironment",
    "SessionID",
    "EngagementMetricsID",
    "EngagementMetricsTime",
    "Level",
    "Mode"
  ],
  "properties": {
    "Header": {
      "type": "string",
      "const": "PGM-ENM-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."
    },
    "EngagementMetricsID": {
      "type": "string",
      "description": "Identifier of this instance."
    },
    "EngagementMetricsTime": {
      "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SimpleTime.json"
    },
    "UserID": {
      "type": "string",
      "description": "Identifier of the User."
    },
    "Level": {
      "type": "number",
      "minimum": 0,
      "maximum": 1,
      "description": "Engagement level, 0 to 1."
    },
    "Mode": {
      "type": "string",
      "description": "Engagement mode."
    },
    "Basis": {
      "type": "array",
      "items": {
        "type": "string",
        "enum": [
          "baseline_state",
          "cadence_history",
          "request"
        ]
      },
      "description": "What the metrics rest on."
    },
    "Confidence": {
      "type": "number",
      "minimum": 0,
      "maximum": 1,
      "description": "Confidence, 0 to 1."
    },
    "DataXMData": {
      "$ref": "https://schemas.mpai.community/PTF/V1.0/data/DataExchangeMetadata.json"
    },
    "DescrMetadata": {
      "type": "string",
      "maxLength": 2048
    }
  }
}