Parallel Distributed Processing

Why It Was Important

The two-volume PDP books argued powerfully against symbolic AI, proposing that human cognition arises from massive networks of simple processing units operating in parallel. This philosophical shift ultimately laid the cognitive science groundwork for the deep learning revolution decades later.

Who Invented It

David Rumelhart & James McClelland

Psychologists and cognitive scientists leading the PDP research group.

Applications

• Cognitive Modeling
• Connectionist Architecture
• Psychology