Statement & Evidence composition

va-spec-source.yaml

A top-level Statement makes a claim; the distinct EvidenceLine class captures a scored, directional argument for it (via hasEvidenceLines). A Statement (via hasEvidence) or an Evidence Line (via hasEvidenceItems) may cite the information it assessed — a StudyResult, a DataItem, another Statement, or a nested EvidenceLine playing an «EvidenceItem» role. A Statement is not itself an Evidence Line.

TU
«abstract»
Proposition
subject: Entity|IRI
predicate: string
object: Entity|IRI
proposition
1..1
TU
Method
name: string
methodType: string
specifiedBy
0..1
TU
Statement
direction: enum
strength: MappableConcept
score: number
classification: MappableConcept
hasEvidence: 0..m
classification is typically translatable with the direction/strength/score tuple of values. A Statement may cite evidence directly via hasEvidence.
contributions
0..m
TU
Contribution
contributor: Agent
activityType: string
date: datetime
reportedIn
0..m
TU
Document
title: string
urls: 0..m
hasEvidenceLines 0..m
TU
EvidenceLine
targetProposition: 0..1
directionOfEvidenceProvided: enum
strengthOfEvidenceProvided: MappableConcept
evidenceOutcome: MappableConcept
targetProposition usually omitted — inherits the parent Statement's claim unless arguing a narrower point. A non‑contributing Evidence Line (noted but not swaying the parent's outcome) has directionOfEvidenceProvided: neutral.
hasEvidenceItems 0..m
additional roles «abstract» = open base class TU Trial Use D Draft