objectstack/packages/spec/json-schema/ai/ModelFeature.json at 8ae3d928f9c95dd320e89d8629a52085fc3d2d73 · objectstack-ai/objectstack · GitHub

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{
  "$ref": "#/definitions/ModelFeature",
  "definitions": {
    "ModelFeature": {
      "type": "object",
      "properties": {
        "name": {
          "type": "string",
          "pattern": "^[a-z_][a-z0-9_]*$",
          "description": "Feature name (snake_case)"
        },
        "label": {
          "type": "string",
          "description": "Human-readable label"
        },
        "field": {
          "type": "string",
          "description": "Source field name"
        },
        "object": {
          "type": "string",
          "description": "Source object (if different from target)"
        },
        "dataType": {
          "type": "string",
          "enum": [
            "numeric",
            "categorical",
            "text",
            "datetime",
            "boolean"
          ],
          "description": "Feature data type"
        },
        "transformation": {
          "type": "string",
          "enum": [
            "none",
            "normalize",
            "standardize",
            "one_hot_encode",
            "label_encode",
            "log_transform",
            "binning",
            "embedding"
          ],
          "default": "none"
        },
        "required": {
          "type": "boolean",
          "default": true
        },
        "defaultValue": {},
        "description": {
          "type": "string"
        },
        "importance": {
          "type": "number",
          "description": "Feature importance score (0-1)"
        }
      },
      "required": [
        "name",
        "field",
        "dataType"
      ],
      "additionalProperties": false
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}