{
  "$defs": {
    "About": {
      "additionalProperties": false,
      "description": "The plain-language card of one catalog item.\n\nEvery field except the expert ones is required, so an About that validates is\nstructurally complete; :func:`about_issues` adds the editorial rules (one or two\nsentences, no jargon in the summary, known chooser tags, related ids that exist).",
      "examples": [
        {
          "assumptions": [
            "Numbers can be added up (spend, sales); averages are averaged"
          ],
          "avoid_when": [
            "Your data already has one row per week"
          ],
          "data_needs": [
            "A date column"
          ],
          "difficulty": "beginner",
          "example": "Daily TV spend of 100 each day becomes 700 for the week.",
          "fits": {
            "goal": [
              "check_data"
            ]
          },
          "outputs": [
            "The same columns, one row per week"
          ],
          "related": [
            "core.calendar"
          ],
          "summary_plain": "Adds up daily numbers into one number per week (or month), so that every row covers the same length of time.",
          "title": "Weekly totals",
          "typical_runtime": "instant",
          "use_when": [
            "Your data is daily but you want to plan or report by week"
          ]
        }
      ],
      "properties": {
        "assumptions": {
          "items": {
            "type": "string"
          },
          "maxItems": 10,
          "minItems": 1,
          "title": "Assumptions",
          "type": "array"
        },
        "avoid_when": {
          "items": {
            "type": "string"
          },
          "maxItems": 10,
          "minItems": 1,
          "title": "Avoid When",
          "type": "array"
        },
        "data_needs": {
          "items": {
            "type": "string"
          },
          "maxItems": 10,
          "minItems": 1,
          "title": "Data Needs",
          "type": "array"
        },
        "difficulty": {
          "$ref": "#/$defs/Difficulty"
        },
        "example": {
          "description": "A tiny example",
          "maxLength": 600,
          "minLength": 10,
          "title": "Example",
          "type": "string"
        },
        "expert_notes": {
          "anyOf": [
            {
              "maxLength": 4000,
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "default": null,
          "description": "Maths, estimator details, caveats for experts",
          "title": "Expert Notes"
        },
        "fits": {
          "additionalProperties": {
            "items": {
              "type": "string"
            },
            "type": "array"
          },
          "description": "Chooser tags: question id -> the answers this item suits",
          "maxProperties": 16,
          "title": "Fits",
          "type": "object"
        },
        "outputs": {
          "items": {
            "type": "string"
          },
          "maxItems": 10,
          "minItems": 1,
          "title": "Outputs",
          "type": "array"
        },
        "references": {
          "items": {
            "$ref": "#/$defs/AboutReference"
          },
          "maxItems": 10,
          "title": "References",
          "type": "array"
        },
        "related": {
          "description": "Ids of related catalog items (models, steps, nodes, checks, templates)",
          "items": {
            "type": "string"
          },
          "maxItems": 16,
          "title": "Related",
          "type": "array"
        },
        "summary_plain": {
          "description": "One or two sentences without jargon: what it does for you",
          "maxLength": 400,
          "minLength": 20,
          "title": "Summary Plain",
          "type": "string"
        },
        "title": {
          "description": "A human name",
          "maxLength": 80,
          "minLength": 3,
          "title": "Title",
          "type": "string"
        },
        "typical_runtime": {
          "$ref": "#/$defs/TypicalRuntime"
        },
        "use_when": {
          "items": {
            "type": "string"
          },
          "maxItems": 10,
          "minItems": 1,
          "title": "Use When",
          "type": "array"
        }
      },
      "required": [
        "title",
        "summary_plain",
        "use_when",
        "avoid_when",
        "data_needs",
        "assumptions",
        "outputs",
        "difficulty",
        "typical_runtime",
        "example"
      ],
      "title": "About",
      "type": "object"
    },
    "AboutReference": {
      "additionalProperties": false,
      "description": "A source for the expert detail (a paper, a book chapter, library documentation).",
      "properties": {
        "title": {
          "maxLength": 300,
          "minLength": 3,
          "title": "Title",
          "type": "string"
        },
        "url": {
          "anyOf": [
            {
              "maxLength": 500,
              "pattern": "^https://\\S+$",
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "default": null,
          "title": "Url"
        }
      },
      "required": [
        "title"
      ],
      "title": "AboutReference",
      "type": "object"
    },
    "Difficulty": {
      "description": "How much statistical background an item needs to use well.",
      "enum": [
        "beginner",
        "intermediate",
        "expert"
      ],
      "title": "Difficulty",
      "type": "string"
    },
    "ExecutionBlock": {
      "additionalProperties": false,
      "properties": {
        "resource_class": {
          "$ref": "#/$defs/ResourceClass",
          "default": "S"
        },
        "timeout": {
          "description": "Duration such as '45m', '1h30m' or '90s'.",
          "examples": [
            "45m",
            "1h30m"
          ],
          "pattern": "^(?=.)(\\d+h)?(\\d+m)?(\\d+s)?$",
          "title": "Timeout",
          "type": "string"
        }
      },
      "title": "ExecutionBlock",
      "type": "object"
    },
    "Metadata": {
      "additionalProperties": false,
      "description": "Identity and labels of a document.",
      "properties": {
        "about": {
          "anyOf": [
            {
              "$ref": "#/$defs/About"
            },
            {
              "type": "null"
            }
          ],
          "default": null,
          "description": "M3.5: a plain-language About card so others can choose this spec, pipeline or workflow (see mapi_spec.about)"
        },
        "description": {
          "anyOf": [
            {
              "maxLength": 4000,
              "type": "string"
            },
            {
              "type": "null"
            }
          ],
          "default": null,
          "title": "Description"
        },
        "labels": {
          "maxProperties": 64,
          "patternProperties": {
            "^[a-z0-9]([a-z0-9_.\\-/]{0,62})$": {
              "maxLength": 63,
              "pattern": "^[A-Za-z0-9_.\\-]*$",
              "type": "string"
            }
          },
          "title": "Labels",
          "type": "object"
        },
        "name": {
          "pattern": "^[a-z0-9](?:[a-z0-9_-]{0,126}[a-z0-9])?$",
          "title": "Name",
          "type": "string"
        },
        "project": {
          "pattern": "^[a-z0-9](?:[a-z0-9_-]{0,126}[a-z0-9])?$",
          "title": "Project",
          "type": "string"
        }
      },
      "required": [
        "name",
        "project"
      ],
      "title": "Metadata",
      "type": "object"
    },
    "ResourceClass": {
      "description": "Executor resource class. Ordered: ``S < M < L < XL < GPU``.\n\n``GPU`` is the last (highest-rank) member on purpose: a quota whose\n``max_resource_class`` is below it refuses it, and :meth:`next_up` never offers it.",
      "enum": [
        "S",
        "M",
        "L",
        "XL",
        "GPU"
      ],
      "title": "ResourceClass",
      "type": "string"
    },
    "TypicalRuntime": {
      "description": "Rough wall-clock time on typical data (``S`` resource class).",
      "enum": [
        "instant",
        "seconds",
        "minutes",
        "long"
      ],
      "title": "TypicalRuntime",
      "type": "string"
    }
  },
  "$id": "https://schemas.mapi.dev/v1/backtest.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "description": "Refit-and-score at several ``as_of`` coords along ``dim``.",
  "properties": {
    "apiVersion": {
      "const": "mapi/v1",
      "title": "Apiversion",
      "type": "string"
    },
    "as_of": {
      "items": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "integer"
          },
          {
            "type": "number"
          },
          {
            "type": "boolean"
          }
        ]
      },
      "maxItems": 500,
      "minItems": 1,
      "title": "As Of",
      "type": "array"
    },
    "base": {
      "description": "Spec revision spec://project/name@rN",
      "pattern": "^spec://([a-z0-9](?:[a-z0-9_-]{0,126}[a-z0-9])?)/([a-z0-9](?:[a-z0-9_-]{0,126}[a-z0-9])?)@(r\\d{1,9}|\\d{1,9}|sha256:[0-9a-f]{64})$",
      "title": "Base",
      "type": "string"
    },
    "dim": {
      "default": "time",
      "pattern": "^[A-Za-z_][A-Za-z0-9_.\\-]{0,127}$",
      "title": "Dim",
      "type": "string"
    },
    "execution": {
      "anyOf": [
        {
          "$ref": "#/$defs/ExecutionBlock"
        },
        {
          "type": "null"
        }
      ],
      "default": null
    },
    "horizon": {
      "anyOf": [
        {
          "minimum": 1,
          "type": "integer"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "title": "Horizon"
    },
    "kind": {
      "const": "Backtest",
      "title": "Kind",
      "type": "string"
    },
    "metadata": {
      "$ref": "#/$defs/Metadata"
    },
    "metrics": {
      "items": {
        "pattern": "^[a-z][a-z0-9_]{0,63}$",
        "type": "string"
      },
      "title": "Metrics",
      "type": "array"
    }
  },
  "required": [
    "apiVersion",
    "kind",
    "metadata",
    "base",
    "as_of"
  ],
  "title": "Backtest",
  "type": "object",
  "x-mapi-contract-version": "0.2"
}