Soft Systems Methodology (SSM) stages 1 – 4

Methodology supporting Soft Systems analysis developed by Checkland. Seven stages: The Problem Situation The Problem Situation expressed Root Definitions of relevant systems Building Conceptual Models Comparison of the expressed Problem Situation and the Conceptual Models Feasible and desired changes Action to improve the situation Stages 1 & 2 – obtaining rich expression of problem situation, creation of rich pictures. Stage […]

A framework for models

Many different types of models but Ackkoff (1962) proposes three categories: iconic model – expected to behave same as real thing. e.g. scale model of ship or model aircraft in wind tunnel. analogue model – attempt to simulate behaviour without necessarily replicating physical appearance. e.g. computer games like Forza and FIFA. analytical model – developed from mathematical or logical relationships […]