Combose Design Patterns

I think that the following article is one of the more interesting articles I ever seen!!

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In this new field of software engineering, the following

important questions are arising:

• Amongst the many different design patterns

that are being discovered, are any related to

each other? What are the characteristics of

such a relationship?

• Do two patterns address a similar problem

area? 

Is it possible to combine two design patterns?

• What are the criteria for classifying design

patterns into categories? >>

Dessign Patterns Collaboration (.pdf)