semweb2slide11

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In retrospect, PACT was a seminal paper, articulating key principles for building large distributed knowledge systems.

Paraphrasing from the conclusion, the first bullet says that “Instead of literally integrating code, modules should be encapsulated by agents, then invoked when needed as network services”. This is the core idea behind the current service-oriented architecture craze.

The second bullet says that agents should communicate on a knowledge level, based on the semantics of the problem domain, rather than the local standards employed by encapsulated systems. Moreover messages should be routed intelligently at run time based on their content, since it’s often impossible to know a priori which agents might be affected by a design action.