IMS Caliper Rubric-related Entities (draft)

Rationale

[TODO\ complete rationale]

Currently, Caliper provides no vocabulary for describing performance expectations for a given AssignableDigitalResource or a way of linking a Result or a Score to the underlying evaluative criteria employed in the scoring process. We propose extending the Caliper vocabulary with a set of Rubric-related entities . . . .

Telemetry

[TODO\ other cases?]

• Link a Rubric to an AssignableDigitalResource, Result or a Score in order to simplify analysis of performance criteria.
• Track a learner who views a Rubric associated with an AssignableDigitalResource, Result or a Score.
• Track an Instructor who creates, edits or deletes a Rubric and or RubricItem and/or links a Rubric to an AssignableDigitalResource.

Proposed Vocabulary Additions

1. Rubric

A Caliper Rubric represents . . . [TODO define ].

Supertype

DigitalResourceCollection

New Properties

TBD. See also Rubric.

JSON-LD term mapping

{
  "Rubric": "caliper:Rubric"
}

2. RubricItem

A Caliper RubricItem represents . . . [TODO define ].

Supertype

DigitalResource

New Properties

TBD. See also RubricItem.

JSON-LD term mapping

{
  "RubricItem": "caliper:RubricItem"
}

3. rubric

An optional Caliper Object property of type Rubric added to AssignableDigitalResource, Result and Score.

JSON-LD term mapping

{
  "rubric": {"@id": "caliper:rubric", "@type": "@id"}

}

Profiles, Events and Entities impacted

Profiles	Events	Entities
Assessment Profile	AssessmentEvent, AssessmentItemEvent	Assessment, AssessmentItem
Assignable Profile	AssignableEvent	AssignableDigitalResource
Grading Profile	GradeEvent	AssignableDigitalResource, Result, Score
*Resource Management Profile	ResourceMgmtEvent, ViewEvent	AssignableDigitalResource

*Proposed for Caliper 1.2

Open Questions

• Do we need a Rubric profile?
• Are Rubric-related entities also assignable?
• Is it sufficient to link an AssignableDigitalResource (e.g. AssessmentItem) to a Rubric or do we need to be able to link it to an individual RubricItem?
• What additional metadata (e.g. properties) do we need to add to Rubric](./rubric.md) and RubricItem?

Rubric

• scoreBounds<?> (Criteria and point values)
• weighting?

RubricItem

• scoringType<string> (constant values: negative scoring, positive scoring)
• pointValue<int>

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