Helmut

A JavaScript library for Formal Concept Analysis, paired with a browser-based tool for interactive use.

What it is

• A library — import src/helmut.js as an ES module in your own project.
• A website — open website/index.html via a local server to use the tool directly in the browser.

No build step, no dependencies.

The library is set up to be compatible with CindyJS, which is how I want to use it mostly. In particular, the website portion will use CindyJS for some visualisations. But the library can (should...) be usable independantly from any form of frontend.

Usage

import { VERSION } from "./src/helmut.js";

The website requires a local HTTP server (not file://) because it uses ES modules:

python -m http.server 8000   # then open http://localhost:8000/website/

Data structures

See SPEC.md for the canonical representation of contexts, concepts, lattices, layouts, and implications — including the array encoding required for CindyJS interop.

Status

Work in progress.