SysML 2.0b2 FTF Avatar
  1. OMG Issue

SYSML2 — Use of the term 'Feature'

  • Key: SYSML2-481
  • Status: open  
  • Source: itemis AG ( Dr. David Akehurst)
  • Summary:

    The use of the term feature in the document is inconsistent with the ISO standard definition

    Feature - ISO/IEC/IEEE 29148:2018
    A feature is an externally desired service by the system that may require a sequence of inputs to effect the desired result.

    • For example, in a telephone system, features include
      • local call,
      • call forwarding and
      • conference call.
    • Each feature is generally described in a sequence of stimulus response pairs.

    I.e. a feature of a system is about externally visible system behaviour

    Feature is a generic term and has many different meanings in different fields/contexts.
    However in System Engineering, the word is usually used as defined by the ISO standard (above).

    The use of the term 'feature' in the SysML 2 document is definitely NOT consistent with the ISO definition.
    Suggestion for a better term in the SysML 2 would be something like Member, Attribute, Aspect, Detail.

  • Reported: SysML 2.0b1 — Wed, 18 Oct 2023 07:26 GMT
  • Updated: Tue, 9 Jan 2024 00:12 GMT