Hewitt, Bishop and Steiger: a universal modular ACTOR formalism

What changed

Presented a modular ACTOR formalism in which computational agents communicate by messages, with the architecture intended to expose parallelism and support artificial-intelligence systems.

Scientific scope

The record is the exact IJCAI 1973 paper. It does not absorb later actor-language implementations, actor-model semantics, distributed-systems work or later multi-agent protocols.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is the exact IJCAI 1973 paper. It does not absorb later actor-language implementations, actor-model semantics, distributed-systems work or later multi-agent protocols.

Contributors

• Carl Hewitt · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
• Peter Bishop · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
• Richard Steiger · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.

• IJCAI 1973 proceedings index
• Hewitt, Bishop and Steiger ACTOR paper

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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