{
  "id": "iris-petals",
  "label": "Iris petals",
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  "application": "Biological measurements",
  "question": "Quantized measurements create repeated points. Compare a transect through the groups with local queries.",
  "description": "150 observations become 102 distinct coordinate pairs. Repeated observations remain identified in the downloadable manifest. Original UCI iris.data, including documented historical errata; not a classifier.",
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    "url": "https://archive.ics.uci.edu/dataset/53/iris",
    "license": "CC BY 4.0",
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    "attribution": "R. A. Fisher, Iris dataset, UCI Machine Learning Repository, doi:10.24432/C56C76; CC BY 4.0. Petal dimensions selected and uniformly rescaled.",
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    [
      3.9,
      1.2
    ],
    [
      5.1,
      1.6
    ],
    [
      4.5,
      1.5
    ],
    [
      4.5,
      1.6
    ],
    [
      4.7,
      1.5
    ],
    [
      4.4,
      1.3
    ],
    [
      4.1,
      1.3
    ],
    [
      4.0,
      1.3
    ],
    [
      4.4,
      1.2
    ],
    [
      4.6,
      1.4
    ],
    [
      4.0,
      1.2
    ],
    [
      3.3,
      1.0
    ],
    [
      4.2,
      1.3
    ],
    [
      4.2,
      1.2
    ],
    [
      4.2,
      1.3
    ],
    [
      4.3,
      1.3
    ],
    [
      3.0,
      1.1
    ],
    [
      4.1,
      1.3
    ],
    [
      6.0,
      2.5
    ],
    [
      5.1,
      1.9
    ],
    [
      5.9,
      2.1
    ],
    [
      5.6,
      1.8
    ],
    [
      5.8,
      2.2
    ],
    [
      6.6,
      2.1
    ],
    [
      4.5,
      1.7
    ],
    [
      6.3,
      1.8
    ],
    [
      5.8,
      1.8
    ],
    [
      6.1,
      2.5
    ],
    [
      5.1,
      2.0
    ],
    [
      5.3,
      1.9
    ],
    [
      5.5,
      2.1
    ],
    [
      5.0,
      2.0
    ],
    [
      5.1,
      2.4
    ],
    [
      5.3,
      2.3
    ],
    [
      5.5,
      1.8
    ],
    [
      6.7,
      2.2
    ],
    [
      6.9,
      2.3
    ],
    [
      5.0,
      1.5
    ],
    [
      5.7,
      2.3
    ],
    [
      4.9,
      2.0
    ],
    [
      6.7,
      2.0
    ],
    [
      4.9,
      1.8
    ],
    [
      5.7,
      2.1
    ],
    [
      6.0,
      1.8
    ],
    [
      4.8,
      1.8
    ],
    [
      4.9,
      1.8
    ],
    [
      5.6,
      2.1
    ],
    [
      5.8,
      1.6
    ],
    [
      6.1,
      1.9
    ],
    [
      6.4,
      2.0
    ],
    [
      5.6,
      2.2
    ],
    [
      5.1,
      1.5
    ],
    [
      5.6,
      1.4
    ],
    [
      6.1,
      2.3
    ],
    [
      5.6,
      2.4
    ],
    [
      5.5,
      1.8
    ],
    [
      4.8,
      1.8
    ],
    [
      5.4,
      2.1
    ],
    [
      5.6,
      2.4
    ],
    [
      5.1,
      2.3
    ],
    [
      5.1,
      1.9
    ],
    [
      5.9,
      2.3
    ],
    [
      5.7,
      2.5
    ],
    [
      5.2,
      2.3
    ],
    [
      5.0,
      1.9
    ],
    [
      5.2,
      2.0
    ],
    [
      5.4,
      2.3
    ],
    [
      5.1,
      1.8
    ]
  ],
  "limitations": "The diagram uses two measured dimensions only. It makes no classification claim.",
  "version": "v12-20261005",
  "inputCount": 150,
  "uniqueCount": 102,
  "duplicates": {
    "policy": "Exact binary-coordinate equality; the core retains the first occurrence. No epsilon merging.",
    "removed": 48,
    "groups": [
      [
        "1",
        "2",
        "5",
        "9",
        "29",
        "34",
        "48",
        "50"
      ],
      [
        "3",
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        "39",
        "43"
      ],
      [
        "4",
        "8",
        "11",
        "28",
        "40",
        "49"
      ],
      [
        "7",
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        "46"
      ],
      [
        "10",
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        "38"
      ],
      [
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      ],
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        "15",
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      ],
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      ],
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        "42"
      ],
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      ],
      [
        "52",
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      ],
      [
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      ],
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      ],
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      ],
      [
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      ],
      [
        "66",
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      ],
      [
        "71",
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      ],
      [
        "75",
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      ],
      [
        "89",
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      ],
      [
        "95",
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      ],
      [
        "102",
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      ],
      [
        "117",
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      ],
      [
        "124",
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      ],
      [
        "137",
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      ]
    ]
  },
  "orderSha256": "b0242d7ffee49c5b018d6023c37888216e932814718ccadd3f0041086d5266e5",
  "hashEncoding": "SHA-256 of ordered interleaved x,y IEEE-754 binary64, little-endian",
  "quantization": "None added. Frozen decimal literals round-trip to their original binary64 values.",
  "frame": "Four artificial square corners are added by the unchanged core.",
  "seedPolicy": "Coordinates are fixed. The interface seed affects hierarchy, fixed sample, walks and query paths.",
  "maximumInputPoints": 180
}