Hideaki Takeda's Publication
- H. Takeda, M. Yoshioka, T. Tomiyama and
Y. Simomura: Analysis of
Design Processes by Functional Evaluation Process, in N. Cross,
H. Christiaans and K. Dorst eds., Analysing Design Activity, pp.
187–209, Chichester (1996), John Wiley & Sons.
Function is a key concept to integrate object modeling and process
modeling in design. In this paper, function is defined as a part of FBS
(Function-Behavior-Structure) diagram, where function is a description of
behavior abstracted through recognition of behavior for utilization. Function
defined above is then used in FEP (Functional-Evolution Process) to represent
design processes. In FEP, function can be evolved in four ways, i.e.,
decomposing evolution, causal evolution, patch evolution and modificatory
evolution. We analyze the design process of the team design by FBS and FEP
scheme. We extracted 37 different function states and 77 different structure
states. Firstly we compare the function model of assignment, users' trial and
evaluation, and the designed object at the final stage so that evolution of
requirements are explicitly represented. Secondly we examines each
evolutional step of design. We extract 110 steps of changing of function and
structure states and classify into three types of function evolution process,
four types of functional modifier evolution process, and one structure
evolution process.
Hideaki Takeda (National Institute of Informatics)