Co-authorship neighborhood
Sara Alcorn's displayed neighborhood
5 of 5 direct collaborators shown.
Scroll the diagram horizontally to inspect every displayed node.
Ordered author table
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| Display order | Author | Role | Distinct papers | Unique collaborators | Weighted degree | Active span |
|---|---|---|---|---|---|---|
| 1 | Sara Alcorn | Focal | 1 | 5 | 5.0 | 2026 |
| 2 | Koustuv Saha | Direct collaborator | 1 | 5 | 5.0 | 2026 |
| 3 | Mark O Riedl | Direct collaborator | 1 | 5 | 5.0 | 2026 |
| 4 | Samir Passi | Direct collaborator | 1 | 5 | 5.0 | 2026 |
| 5 | Todd McNutt | Direct collaborator | 1 | 5 | 5.0 | 2026 |
| 6 | Upol Ehsan | Direct collaborator | 1 | 5 | 5.0 | 2026 |
Displayed collaboration table
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| Author pair | Shared papers | Full weight | Fractional weight |
|---|---|---|---|
| Upol Ehsan — Sara Alcorn | 1 | 1 | 0.2 |
| Upol Ehsan — Mark O Riedl | 1 | 1 | 0.2 |
| Upol Ehsan — Todd McNutt | 1 | 1 | 0.2 |
| Upol Ehsan — Samir Passi | 1 | 1 | 0.2 |
| Upol Ehsan — Koustuv Saha | 1 | 1 | 0.2 |
| Sara Alcorn — Mark O Riedl | 1 | 1 | 0.2 |
| Sara Alcorn — Todd McNutt | 1 | 1 | 0.2 |
| Sara Alcorn — Samir Passi | 1 | 1 | 0.2 |
| Sara Alcorn — Koustuv Saha | 1 | 1 | 0.2 |
| Mark O Riedl — Todd McNutt | 1 | 1 | 0.2 |
| Mark O Riedl — Samir Passi | 1 | 1 | 0.2 |
| Mark O Riedl — Koustuv Saha | 1 | 1 | 0.2 |
| Todd McNutt — Samir Passi | 1 | 1 | 0.2 |
| Todd McNutt — Koustuv Saha | 1 | 1 | 0.2 |
| Samir Passi — Koustuv Saha | 1 | 1 | 0.2 |
Graph construction and limits
Each distinct paper contributes an undirected pair for every two eligible identities in its deduplicated latest OpenAlex author list. Self-loops are removed. Solo papers count toward an author's paper total but create no edge. The selected display is an ego subgraph. Paper, collaborator, weighted-degree, and active-span metrics for every displayed node use the full filtered provider view; component size describes the focal author's component.
Immutable provider payloads are stored once. A separate receipt log records a later delivery of an earlier payload, so roster reversions remain visible. Exact duplicate receipts are idempotent. Equal timestamps use receipt insertion order as the tie-breaker.
Co-authorship records shared paper attribution only. It does not establish contribution size, research quality, influence, friendship, topic similarity, or citation relationships.