{
 "$schema": "http://json-schema.org/draft-07/schema#",
 "title": "Subject Strength of 19 Chinese Universities: GRAS 2026, ARWU Indicators and Highly Cited Researchers 2025",
 "type": "object",
 "properties": {
  "university_id": {
   "type": "string",
   "description": "Stable slug of the university, the same id as in the other Long Bet datasets."
  },
  "subject_code": {
   "type": "string",
   "description": "ShanghaiRanking subject code (e.g. `AS0101` Mathematics)."
  },
  "subject_category": {
   "type": "string",
   "description": "GRAS subject category: Natural Sciences, Engineering, Life Sciences, Medical Sciences, Social Sciences."
  },
  "subject": {
   "type": "string",
   "description": "GRAS subject name."
  },
  "gras_2026_rank": {
   "type": "string",
   "description": "Rank in the GRAS 2026 subject list as published: a number for places 1-50, a band (e.g. `51-75`, `151-200`) beyond, or `not in published list (top N)` when the university is not in a list that is published to place N."
  },
  "published_list_length": {
   "type": "integer",
   "description": "How far down the subject list is published (50, 100, 200, 300, 400 or 500 places)."
  },
  "source_url": {
   "type": "string",
   "description": "Page(s) the figure was read from, \"; \"-separated."
  },
  "source_type": {
   "type": "string",
   "description": "`official` (ranking publisher).",
   "enum": [
    "official"
   ]
  },
  "checked_at": {
   "type": "string",
   "description": "Date read, ISO 8601."
  }
 },
 "required": [
  "university_id",
  "subject_code",
  "subject_category",
  "subject",
  "gras_2026_rank",
  "published_list_length",
  "source_url",
  "source_type",
  "checked_at"
 ],
 "additionalProperties": false
}