{
  "title": "Recycling sortation data for AI material recognition",
  "source_page": "https://fiund.com/industries/recycling-sortation-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "Verified material and a local stream rule can disagree with a visual shortcut",
    "context": "Owned clean training objects on a stationary table use original annotations and an invented routing rule. There is no conveyor, hazardous waste, actual facility rule or claim of buyer demand.",
    "records": [
      [
        "RC1",
        "Local practice rule",
        "Verified material PLASTIC goes to stream P; verified GLASS to G. Unidentified objects route to REVIEW. Rule is original to this fixture."
      ],
      [
        "RC2",
        "Objects A and B",
        "Transparent A has verified plastic provenance, glare partly obscures its shape. Similar transparent B has verified glass provenance. Distinct full object IDs."
      ],
      [
        "RC3",
        "Object C and split draft",
        "C is crumpled with removed label; reviewer cannot verify material. Draft training/test split uses adjacent frames of A in both sets."
      ]
    ],
    "question": "Which streams follow from the verified labels, what happens to C, and why does the proposed split weakly test new-object generalization?",
    "answer": "RC1 and RC2 route verified plastic A to P and glass B to G despite their similar transparent appearance. RC3's C lacks a verified material label and belongs in REVIEW rather than a forced class. Adjacent frames of A in both training and test reuse the same object and are a weak test of transfer to unseen instances. Hold out complete separately verified objects and preserve uncertainty instead of using transparency as a universal material shortcut.",
    "failureModes": [
      "Inferring material solely from transparency or a familiar shape.",
      "Forcing an uncertain class or claiming new-object transfer from adjacent frames of the same object."
    ],
    "fields": [
      [
        "Object ID and verified material source",
        "Defines ground truth."
      ],
      [
        "Local rule, stream and uncertainty",
        "Supports routing."
      ],
      [
        "Occlusion and instance-level split",
        "Preserves capture and evaluation limits."
      ]
    ],
    "holdout": "Use an original opaque plastic object and a clear nonmatching prop with independently reviewed labels. Test material evidence rather than the initial appearance pattern.",
    "boundary": "Use approved clean objects away from operating equipment. Exclude workers, addresses, layouts and telemetry; no contaminated material is needed."
  }
}