Centra
Who matters in a network, and why.
What it is
Centra is an interactive PageRank engine that measures which nodes matter most in a network and lets you see why. The signature technique is the random-surfer step - teleport plus dangling-mass redistribution - iterated to its fixed point, with nodes sized by rank and convergence you can scrub through, validated by the two defining invariants that ranks sum to 1 and satisfy the PageRank equation. It is a from-scratch, dependency-light build you can download and run locally.
A pure PageRank engine: the random-surfer step (teleport + dangling-mass redistribution) iterated to its fixed point, with nodes sized by rank and convergence you can scrub. 13 tests on the two defining invariants - ranks sum to 1, and they satisfy the PageRank equation.
What's inside
The full source, the tests, and CI. Open it, read it, change it. A zero-dependency core, free, in the MIT spirit.
Run it after unzip
pnpm install && pnpm dev