Co-authorship neighborhood
Oleksandr Petrychenko's displayed neighborhood
5 of 5 direct collaborators shown.
Scroll the diagram horizontally to inspect every displayed node.
Ordered author table
Scroll the table horizontally to see every column.
| Display order | Author | Role | Distinct papers | Unique collaborators | Weighted degree | Active span |
|---|---|---|---|---|---|---|
| 1 | Oleksandr Petrychenko | Focal | 1 | 5 | 5.0 | 2026 |
| 2 | Maksym Makarenko | Direct collaborator | 1 | 5 | 5.0 | 2026 |
| 3 | Nataliia Andrushkevych | Direct collaborator | 1 | 5 | 5.0 | 2026 |
| 4 | Nataliia Dobrianska | Direct collaborator | 1 | 5 | 5.0 | 2026 |
| 5 | Oleksandra Niema | Direct collaborator | 1 | 5 | 5.0 | 2026 |
| 6 | Olena Bobrovska | Direct collaborator | 1 | 5 | 5.0 | 2026 |
Displayed collaboration table
Scroll the table horizontally to see every column.
| Author pair | Shared papers | Full weight | Fractional weight |
|---|---|---|---|
| Olena Bobrovska — Nataliia Andrushkevych | 1 | 1 | 0.2 |
| Olena Bobrovska — Oleksandr Petrychenko | 1 | 1 | 0.2 |
| Olena Bobrovska — Nataliia Dobrianska | 1 | 1 | 0.2 |
| Olena Bobrovska — Oleksandra Niema | 1 | 1 | 0.2 |
| Olena Bobrovska — Maksym Makarenko | 1 | 1 | 0.2 |
| Nataliia Andrushkevych — Oleksandr Petrychenko | 1 | 1 | 0.2 |
| Nataliia Andrushkevych — Nataliia Dobrianska | 1 | 1 | 0.2 |
| Nataliia Andrushkevych — Oleksandra Niema | 1 | 1 | 0.2 |
| Nataliia Andrushkevych — Maksym Makarenko | 1 | 1 | 0.2 |
| Oleksandr Petrychenko — Nataliia Dobrianska | 1 | 1 | 0.2 |
| Oleksandr Petrychenko — Oleksandra Niema | 1 | 1 | 0.2 |
| Oleksandr Petrychenko — Maksym Makarenko | 1 | 1 | 0.2 |
| Nataliia Dobrianska — Oleksandra Niema | 1 | 1 | 0.2 |
| Nataliia Dobrianska — Maksym Makarenko | 1 | 1 | 0.2 |
| Oleksandra Niema — Maksym Makarenko | 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.