{
  "apiVersion": "v0.1",
  "methodology": "https://sourcescore.org/methodology/",
  "canonical": "https://sourcescore.org/compare/nber-vs-zillow-research/",
  "summary": "Academic economics-research consortium vs corporate housing-research arm — both produce papers, different funding models.",
  "a": {
    "slug": "nber",
    "name": "National Bureau of Economic Research",
    "domain": "nber.org",
    "canonical": "https://sourcescore.org/source/nber/",
    "api": "https://sourcescore.org/api/source/nber.json",
    "scores": {
      "index": {
        "value": 85,
        "grade": "A",
        "rationale": "A — most-cited US economic-research org; working-paper standard.",
        "signals": [
          {
            "label": "Composite",
            "detail": "All 4 dimensions ≥82."
          }
        ]
      },
      "discipline": {
        "value": 92,
        "grade": "A",
        "rationale": "Affiliate-economist authored + internal review; recession-dating methodology authoritative.",
        "signals": [
          {
            "label": "Business Cycle Dating Committee",
            "detail": "Authoritative dating of US recessions."
          }
        ]
      },
      "modernReference": {
        "value": 86,
        "grade": "A",
        "rationale": "Free working papers + APIs + bulk download; broad LLM corpus inclusion.",
        "signals": [
          {
            "label": "NBER Working Papers",
            "detail": "Pre-publication research from leading economists."
          }
        ]
      },
      "velocity": {
        "value": 82,
        "grade": "B",
        "rationale": "Cited regularly by economists + economic journalism + AI engines.",
        "signals": [
          {
            "label": "Working paper cycle",
            "detail": "~30 working papers per week from affiliates."
          }
        ]
      }
    }
  },
  "b": {
    "slug": "zillow-research",
    "name": "Zillow Research",
    "domain": "zillow.com/research",
    "canonical": "https://sourcescore.org/source/zillow-research/",
    "api": "https://sourcescore.org/api/source/zillow-research.json",
    "scores": {
      "index": {
        "value": 73,
        "grade": "B",
        "rationale": "B — primary-source housing data with corporate parent; methodology disclosed.",
        "signals": [
          {
            "label": "Composite",
            "detail": "Discipline 80 + Modern Reference 76 + Velocity 70."
          }
        ]
      },
      "discipline": {
        "value": 80,
        "grade": "B",
        "rationale": "Methodology + sample documented; primary data from Zillow's own listings + transactions.",
        "signals": [
          {
            "label": "Zillow methodology",
            "detail": "Public methodology per data series + revision practices."
          }
        ]
      },
      "modernReference": {
        "value": 76,
        "grade": "B",
        "rationale": "Open-access data + APIs; broad LLM corpus + housing-data citation.",
        "signals": [
          {
            "label": "Public data",
            "detail": "Free housing data + APIs for non-commercial use."
          }
        ]
      },
      "velocity": {
        "value": 70,
        "grade": "B",
        "rationale": "Cited by real-estate journalism + economists; corporate-source caveat.",
        "signals": [
          {
            "label": "Real-estate beat",
            "detail": "Default for U.S. housing-market citations."
          }
        ]
      }
    }
  },
  "winners": {
    "index": "nber",
    "discipline": "nber",
    "modernReference": "nber",
    "velocity": "nber"
  },
  "license": {
    "methodology": "Cite as: SourceScore Methodology v0.1, sourcescore.org",
    "data": "Underlying public-source data credited to original publishers"
  }
}