@memoarchitect/ontology

MEMO — Medical Engineering Modelling Ontology — the pure SysML v2 content layer.

A standalone, tool-portable SysML v2 / KerML ontology for medical-device architecture per ISO 14971, IEC 62304, and ISO/IEC/IEEE 42010. Consistency rules ship as native constraint def / requirement def bodies (no engine plug-ins), so the ontology is portable content consumable by any conformant SysML v2 tool — SysIDE, SysON, or sysand.

The published package contains no JavaScript, TypeScript, or engine code. The MEMO engine and CLI live in memo-tools; the web app lives in memo-architect.

Current package state

@memoarchitect/ontology is an independently installable npm package. Consumers pin an exact release; the package has no repository or runtime dependency on Memo Tools or Memo Architect.

pnpm add @memoarchitect/[email protected]

For coordinated development, the private memo-meta workspace checks out Ontology, Tools, and Architect as sibling repositories and links this package into its dependants with meta-only pnpm overrides.

Documentation

Start with the user guide to learn MEMO's layer model, choose elements and relationships, and follow the GPCA pump example. The reference section describes packages, source layout, and maintenance. Build the site with:

python3 -m pip install "mkdocs>=1.6" "mkdocs-material>=9.5" "pymdown-extensions>=10.0"
pnpm run docs:build

Layout

The package exposes four logical MEMO packages through memo.manifest.yaml. The manifest maps package identifiers to package subpaths.

memo.manifest.yaml           logical package, init, and example map
ontology/                    @memoarchitect/ontology descriptor
profile/                     @memoarchitect/medical-modeling-profile + archetypes/templates
methodologies/default/       @memoarchitect/methodology-default descriptor
methodologies/gpca/          @memoarchitect/methodology-gpca descriptor
template/                    complete starter project copied by memo init
examples/gpca-pump/          reference model (not a scaffold template)
src/                         all reusable .sysml content (namespace = directory)
  medical_device_library.sysml   public import surface
  core/                          common/ enumerations/ relationships/
                                 dimensions/ semantics/ + stdlib/* (KerML wrapper)
  architecture/                  one folder per layer: context/ requirements/ functions/ behavior/
                                 logical_structure/ software_structure/ … risk/ cybersecurity/ assurance/ …
  compliance/                    artifacts/ change/ document_views/ postmarket/ iso14971/
  viewpoints/                    reusable viewpoint and view definitions
  rules/                         closure/ coverage/ crosslayer/ lifecycle/ quantitative/ (native constraint defs)
  artifacts/                     artifact kinds (memo::artifacts)
  methodology/                   default methodology

Build / verify

Requires sysand on PATH.

pnpm run build        # or: ./scripts/build-kpar.sh

Builds transient SysAnd projects for the core ontology and methodology into .kpar archives and fails on any external-parser error. The transient project descriptors and build products are not included in the npm package.

pnpm test             # manifest/layout tests + npm pack content gate
npm pack              # produces the single @memoarchitect/ontology content tarball

License

MIT