HypergraphZ is a directed hypergraph implementation in Zig (https://en.wikipedia.org/wiki/Hypergraph):
- Each hyperedge can contain zero, one (unary) or multiple vertices.
- Each hyperedge can contain vertices directed to themselves one or more times.
Zig version
HypergraphZ currently requires Zig 0.17.0-dev.242+5d55999d2.
Usage
Add hypergraphz as a dependency to your build.zig.zon:
zig fetch --save https://github.com/yamafaktory/hypergraphz/archive/<commit-hash>.tar.gz
Add hypergraphz as a dependency to your build.zig:
const hypergraphz = b.dependency("hypergraphz", .{ .target = target, .optimize = optimize, }); exe.root_module.addImport("hypergraphz", hypergraphz.module("hypergraphz"));
Example
examples/coauthorship.zig models a small research community as a directed hypergraph
where vertices are researchers and hyperedges are papers. The first listed author is
treated as the corresponding author, giving each hyperedge a natural direction.
zig build example
It walks through nine features of the library in sequence:
| Section | API | What it shows |
|---|---|---|
| Papers per researcher | getVertexHyperedges |
reverse-index query |
| Research communities | getConnectedComponents |
two isolated groups with no cross-group papers |
| Betweenness centrality | computeCentrality |
which researchers bridge the most collaboration paths |
| Degrees of separation | findShortestPath |
1–3 hops within a community; unreachable across communities |
| Dual: paper-centric view | getDual |
swap vertices ↔ hyperedges to see each researcher's papers |
| Shared authorship | getIntersections |
researchers present on every paper in a given set |
| Seniority ordering | topologicalSort |
hierarchy implied by the authorship direction |
| Pairwise expansion | expandToGraph |
6 papers encode 11 directed pairs in a regular graph |
Documentation
The latest online documentation can be found here.