 S5 conformance is established by its specified dataflows.S5 'Signal Analysis' is not specified.It may be either based on statistical methods, which require extensive computational power, or on the discovery of algebraic invariants with Gaussian processes by Clemens Par in 2010 (after having been averted to this classical problem by Rudolf E. Kálmán), based on German mathematician David Hilbert's published proof of the invariant field in 1893 and the apolarity behavior of algebraic cones as extensively studied by Grace and Young in 1903.