G15 — Citation, co-citation, and bibliographic-coupling graph · Graph systems

183 words. Researched design, reviewed 2026-09-12: a library view or proposed design with its sources stated; not a deployed system, a live audit or a provider requirement. Source: Graph/G15-citation-co-citation-and-bibliographic-coupling-graph.md. Graph systems, shelf 5 of 8; library release 2026.09.12-g40.

Status: NEW RESEARCHED DESIGN; not deployed
Reviewed: 2026-09-12
Nature: research/analysis view
Priority: P2
Accountability: R10, R14, R11

Question

Which works cite which sources, and which share citation neighborhoods?

Nodes

Work; Cited source; Citation occurrence

Relationship sketch

work → cited source
two works → shared reference projection
two sources → jointly cited projection

Evidence inputs

Resolved citations, source locators, document versions, and duplication provenance.

Implementation

Maintain the directed citation graph first. Co-citation connects items cited together; bibliographic coupling connects works sharing references. Label derived edges and formulas, not endorsements.

Acceptance checks

Derived projections can be recomputed from citation records
Copied source lists do not count as independent evidence
A citation is inspected before treating it as support

Do not infer

Being cited together does not imply identity, agreement, quality, or ranking equivalence.

Publication boundary

Respect source licenses; publish only permitted citation data.

Source basis

S14, S37, S40. See Research/sources.json. Sources support the primitives or named technology. The organization, labels, actions, and acceptance contracts in this catalog are this library's design, not claimed provider requirements.