FCA4J

A Java toolkit for Formal Concept Analysis purposes

Quick start

java -jar fca4j-cli.jar <command> <input> [<output>] [options]

See Getting started for a complete walkthrough with the Animals11 example.

Build complete concept lattices with ADD_EXTENT or top-most concepts with ICEBERG.

Build the sub-order restricted to attribute-concepts and object-concepts.

Compute the canonical (Duquenne-Guigues) and ordered direct (D-Basis) bases of implications.

Clarify, reduce, inspect, binarize, and convert formal contexts across multiple formats.

Create conceptual structure families from relational context families, with RCAviz export.

Pluggable set implementations (BitSet, RoaringBitmap, FastUtil, HPPC, Koloboke…) for performance tuning.

For RCA visualization, you can use RCAviz. FCA4J generates the JSON input file for RCAviz via the RCA command.

Lattice and AOC-Poset results can be exported to Graphviz DOT format for PDF rendering.

Latest executable jar	fca4j-app-0.4.6.jar fca4j-app-light-0.4.6.jar
Other versions	Downloads