Pattern Language 3.0: Methodological Advances in Sharing Design Knowledge

COINs2011

Pattern Language 3.0
Methodological Advances in Sharing Design Knowledge

Takashi Iba
Faculty of Policy Management, Keio University

‣ Pattern language is written design knowledge in a certain
domain.

design knowledge = the knowledge of problem finding and
problem solving

‣ A pattern language consists of patterns that describe
what kind of problem frequently occurs in a certain
context, and what is a good solution for the problem.

‣ It was invented as a tool for thinking and communicating
about the design (in architecture).

Context
Problem Finding
Problem
design Problem Solving
Solution

“design knowledge”

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The method of pattern languages was originally proposed
in architecture in late 70’s.

http://stephania32.wordpress.com/

Christopher Alexander

C. Alexander, S. Ishikawa, M. Silverstein,
A Pattern Language: Towns, Buildings, Construction,
Oxford University Press, 1977

The method of pattern languages was applied into
software design in late 80’s

http://commons.wikimedia.org/wiki/ http://commons.wikimedia.org/wiki/
File:Kent_Beck_no_Workshop_Mappin File:Ward_Cunningham_at_Wikim
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Kent Beck Ward Cunningham

Kent Beck & Ward Cunningham, “Using Pattern Languages
for Object-Oriented Program”, OOPSLA '87, 1987

The method of pattern languages became famous
in software design, as design pattern in 90’s.

http://researchweb.watson.ibm.com/designpatterns/pubs/ddj-eip-
award.htm

GoF
(Gang of Four)

Erich Gamma, Richard Helm, Ralph Johnson, John M. Vlissides,
Design Patterns: Elements of Reusable Object-Oriented Software,
Addison-Wesley Professional, 1994

The method of pattern languages has been applied
into new areas of design in a broad sense.

Methodological Advances of Pattern Languages

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I call a new wave of pattern language “Pattern Language 3.0” (PL3.0), distinguishing
from the previous stages, which we call here Pattern Language 1.0 (PL1.0) and Pattern
Language 2.0 (PL2.0). In order to understand the waves of pattern languages, the
following three aspects are considered: the object of design which pattern languages
help, why to make pattern languages, and how to make pattern languages.

Methodological Advances of Pattern Languages

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for designing, and accordingly the meta-
cognition for designing becomes more
important than before.

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In the PL3.0, pattern languages are made
through collaborative mining, writing, and O D':,((*"&

improvement; in this stage, all process is
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opened. Thus, the history of development
process of patterns is the history of
involving otherness.

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Learning Patterns Project
Since 2008

Pattern Language 3.0: Methodological Advances in Sharing Design Knowledge

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Pattern Language 3.0: Methodological Advances in Sharing Design Knowledge