Common use of Encoding Clause in Contracts

Encoding. The encoding used for the ASIL decomposition optimisation is much simpler than that used for the architectural optimisation. Rather than have a hierarchical tree structure to represent the makeup of the system, the ASIL optimisation simply uses the set of relevant basic events and assigns each of them an ASIL value between 0 (QM) and 4 (ASIL D). Thus each encoding can in fact be represented as a string of numbers between 0 and 4. This effectively serves as the ‘genes’ of each individual; successful individuals will have some or all of their encoding string preserved in the next generation (meaning that some or all of their ASIL assignments remain the same), whereas unsuccessful allocations of ASILs will tend to die out instead. The format of the encoding is very similar to that of the SRA, which means they can be output upon completion of the optimisation almost directly.