Checklist classifications can be applied at the global level and can be nested within an object-type annotation.

Import

When you import Checklist classifications via the Model-assisted labeling workflow, your JSON file must contain the following information for each Checklist.

Parameter	Asset type	Required	Description
`uuid`	Image Video Text Tiled imagery	Yes	A user-generated UUID for each annotation. If you import an annotation to a Data Row and there is already an imported annotation with the same uuid on that Data Row, the latest import will override the previous one. The uuid must be 128 bits (32 characters). The following formats are supported: `A0EEBC99-9C0B-4EF8-BB6D-6BB9BD380A11` `{a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11}` `a0eebc999c0b4ef8bb6d6bb9bd380a11` `a0ee-bc99-9c0b-4ef8-bb6d-6bb9-bd38-0a11` `{a0eebc99-9c0b4ef8-bb6d6bb9-bd380a11}`
`schemaId`	Image Video Text Tiled imagery	Yes	The ID of the schema that contains all of the information needed for rendering your annotation.
`dataRow.id`	Image Video Text Tiled imagery	Yes	The ID of the Data Row where you want to attach the imported annotations.
`answers.schemaId`	Image Video Text Tiled imagery	Yes	The ID of the Checklist answer schema. Checklist can have multiple correct answers so `"answers"` is plural.
`frames.start`	Video	Yes	The first frame you wish to include in the checklist classification.
`frames.end`	Video	Yes	The last frame you wish to include in the checklist classification.

// Global classification
{
    "uuid": "fb72782d-f6ed-43ba-8677-77b03197392d",
    "dataRow": {
        "id": "ckd1299m8cqbs0cq43mju1bvp"
    },
    "schemaId": "ckd1295hc00640z0uapvm1xbd", // Checklist question
    "answers": [
        {
            "schemaId": "ckd1295jn00760z0u01hw4yz5" // Checklist answer
        },
        {
            "schemaId": "ckd1295hh006g0z0ucbxgfgec" // Checklist answer
        }
    ]
}

// Nested classification
{
    "uuid": "532953e6-746f-4d74-945d-b4a9c2786479",
    "schemaId": "ckshluz7h7d9b0yb60biaasya",
    "dataRow": {
        "id": "ckshkj1vj4rsq0yvubkoe76vi"
    },
    "bbox": {
        "top": 57,
        "left": 209,
        "height": 216,
        "width": 152
    },
    "classifications": [
        {
            "schemaId": "ckshluz847d9d0yb65oqhfg65", // Nested checklist question
            "answers": [
                    {
                        "schemaId": "ckshluz8r7d9j0yb6d9l45o1b" // Nested checklist answer
                    },
                    {
                        "schemaId": "ckshluz8r7d9j0yb6d9l45opl" // Nested checklist answer
                    },                  
            ]
        }
    ]
}

// Global classification only
{
    "schemaId": "ckd1295hc00640z0uapvm1xbd",  // question schema id
    "uuid": "fb72782d-f6ed-43ba-8677-77b03197392d",
    "dataRow": {
    "id": "ckd1299m8cqbs0cq43mju1bvp"
    },
    "answers": [
        {
            "schemaId": "ckd1295jn00760z0u01hw4yz5" // answer schema id
        }, {
            "schemaId": "ckd1295hh006g0z0ucbxgfgec" // answer schema id
        }
    ],
    "frames": [
        {
            "start": 7,
            "end": 13,
        },
        {
            "start": 18,
            "end": 19,
        }
    ]
}

// Global classification
{
    "uuid": "fb72782d-f6ed-43ba-8677-77b03197392d",
    "dataRow": {
        "id": "ckd1299m8cqbs0cq43mju1bvp"
    },
    "schemaId": "ckd1295hc00640z0uapvm1xbd", // Checklist question
    "answers": [
        {
            "schemaId": "ckd1295jn00760z0u01hw4yz5" // Checklist answer
        },
        {
            "schemaId": "ckd1295hh006g0z0ucbxgfgec" // Checklist answer
        }
    ]
}

// Nested classification
{ 
    "uuid": "9fd9a92e-2560-4e77-81d4-b2e955800092", 
    "schemaId": "ck8kukafkqx1a0880iczbrqym",
    "dataRow": { 
        "id": "ck1s02fqxm8fi0757f0e6qtdc" 
    }, 
    "location": { 
        "start": 67, 
        "end": 128 
    },
    "classifications": [
        {
            "schemaId": "ckshluz847d9d0yb65oqhfg65", // Nested checklist question
                        "answers": [
                        {
                            "schemaId": "ckd1295jn00760z0u01hw4yz5" // Checklist answer
                        },
                        {
                            "schemaId": "ckd1295hh006g0z0ucbxgfgec" // Checklist answer
                        }
                    ]
        }
    ]
}

// Global classification
{
    "uuid": "fb72782d-f6ed-43ba-8677-77b03197392d",
    "dataRow": {
        "id": "ckd1299m8cqbs0cq43mju1bvp"
    },
    "schemaId": "ckd1295hc00640z0uapvm1xbd", // Checklist question
    "answers": [
        {
            "schemaId": "ckd1295jn00760z0u01hw4yz5" // Checklist answer
        },
        {
            "schemaId": "ckd1295hh006g0z0ucbxgfgec" // Checklist answer
        }
    ]
}

// Nested classification
{
    "uuid": "532953e6-746f-4d74-945d-b4a9c2786479",
    "schemaId": "ckshluz7h7d9b0yb60biaasya",
    "dataRow": {
        "id": "ckshkj1vj4rsq0yvubkoe76vi"
    },
    "bbox": {
        "top": 57,
        "left": 209,
        "height": 216,
        "width": 152
    },
    "classifications": [
        {
            "schemaId": "ckshluz847d9d0yb65oqhfg65", // Nested checklist question
            "answers": [
                    {
                        "schemaId": "ckshluz8r7d9j0yb6d9l45o1b" // Nested checklist answer
                    },
                    {
                        "schemaId": "ckshluz8r7d9j0yb6d9l45opl" // Nested checklist answer
                    },                  
            ]
        }
    ]
}

Export

When you export your Checklist classifications from Labelbox, the export file will contain the following information for each Checklist.

Parameter	Asset type	Description
`featureId`	Image Video Text Tiled imagery	ID of the classification question in the ontology.
`schemaId`	Image Video Text Tiled imagery	ID of the schema that contains all of the structural information for the classification question.
`title`	Image Video Text Tiled imagery	Text that appears as the classification question.
`value`	Image Video Text Tiled imagery	Name of the classification question in the Labelbox database.
`answers.featureId`	Image Video Text Tiled imagery	ID of the classification answer in the ontology.
`answers.schemaId`	Image Video Text Tiled imagery	ID of the schema that contains the structural information for the classification answer.
`answers.title`	Image Video Text Tiled imagery	Text that appears as the classification answer.
`answers.value`	Image Video Text Tiled imagery	Name of the classification answer in the Labelbox database.
`answers.keyframe`	Video	When `keyframe` is `true`, it means that a labeler created or made an adjustment to the annotation on that frame. When `keyframe` is `false`, it means the annotation was auto-populated or interpolated on that frame.

{
    "featureId": "ckmuzkagt00033g68c164geo8",
    "schemaId": "ckmuzjtfa64bo0y831j83ep9p",
    "title": "Checklist question",
    "value": "checklist_question",
    "answers": [
        {
            "featureId": "ckmuzkagt00023g68jomt0767",
            "schemaId": "ckmuzjtlr64c10y83gazv0v13",
            "title": "Correct checklist answer",
            "value": "correct_checklist_answer"
        }
    ]
}

{
    "featureId": "cknp36ay800003g68b908p4ah",
    "schemaId": "cknp35stw05w90yct45j4c7h6",
    "title": "Checklist question",
    "value": "checklist_question",
    "answers": [
        {
            "featureId": "cknp36ay800013g685e5ztvmp",
            "schemaId": "cknp35svp05x10yct13lv37rl",
            "title": "Correct checklist answer",
            "value": "correct_checklist_answer",
            "keyframe": true
        },
        {
            "featureId": "cknp36bdt00023g68zylk8kwx",
            "schemaId": "cknp35svp05x30yct898ga2pq",
            "title": "Correct checklist answer",
            "value": "correct_checklist_answer",
            "keyframe": false
        }
    ]
}

{
    "featureId": "ckmuzkagt00033g68c164geo8",
    "schemaId": "ckmuzjtfa64bo0y831j83ep9p",
    "title": "Checklist question",
    "value": "checklist_question",
    "answers": [
        {
            "featureId": "ckmuzkagt00023g68jomt0767",
            "schemaId": "ckmuzjtlr64c10y83gazv0v13",
            "title": "Correct checklist answer",
            "value": "correct_checklist_answer"
        }
    ]
}

{
    "featureId": "ckmuzkagt00033g68c164geo8",
    "schemaId": "ckmuzjtfa64bo0y831j83ep9p",
    "title": "Checklist question",
    "value": "checklist_question",
    "answers": [
        {
            "featureId": "ckmuzkagt00023g68jomt0767",
            "schemaId": "ckmuzjtlr64c10y83gazv0v13",
            "title": "Correct checklist answer",
            "value": "correct_checklist_answer"
        }
    ]
}