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On the Expressive Power of Languages for Static Variability

slides:none on file

A formal semantic domain for static variability models configurations as functions-to-variants, and the paper proves soundness, completeness, and relative expressiveness for several languages, including choice calculus and algebraic decision trees (both complete) and several incomplete formalisms; translations are implemented as an Agda library so every proof is an executable compiler, artifacts are available and evaluated, and practical costs appear: clone‑and‑own is complete but causes combinatorial blowup (e.g. Linux has 5,000 options).

AI-written summary · about

  1. 0:00Static variability intro
  2. 2:05Choice calculus formalization
  3. 4:56Variational expressions semantics
  4. 6:21Expressiveness criteria and proofs
  5. 8:47Soundness, completeness, clone-and-own
  6. 11:16Choice calculus as lambda calculus
  7. 13:23ACT implementation and repo
  8. 14:03Q&A on constraints
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